7Baggers

CubeSmart
(NYSE:CUBE) 

CUBE stock logo

CubeSmart is a self-administered and self-managed real estate investment trust. The Company's self-storage properties are designed to offer affordable, easily accessible and secure storage space for residential and commercial customers. According to the 2020 Self-Storage Almanac, CubeSmart is one of...

Founded: 2004
Full Time Employees: 3,011
Sector: Real Estate
Industry: REIT-Industrial

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Quarterly
Annual
    Unit: USD2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-10-21 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-10-21 2004-09-30 
                                                                                           
      revenues
                                                                                           
      rental income
    243,400,000 239,557,000 232,765,000 228,226,000 230,954,000 226,791,000 225,190,000 230,037,000 232,468,000 225,910,000 223,584,000 227,948,000 226,837,000 216,133,000 208,371,000 192,507,000 182,409,000 170,359,000 162,476,000 153,033,000 146,507,000 140,484,000 140,985,000 142,578,000 142,207,000 136,027,000 131,592,000 133,055,000 132,476,000 127,843,000 124,161,000 125,063,000 125,699,000 121,224,000 117,057,000 116,650,000 116,416,000 111,538,000 104,997,000 101,732,000 102,385,000 96,803,000 91,556,000 88,721,000 85,392,000 81,071,000 75,714,000 72,575,000 73,067,000 72,231,000 69,618,000 66,604,000 65,363,000 61,233,000 60,107,000 56,677,000 53,705,000 52,906,000 51,873,000 46,277,000 50,809,000 49,465,000 49,042,000 48,817,000 50,498,000 52,336,000 53,813,000 54,294,000 56,079,000 56,158,000 56,376,000 55,493,000 53,969,000 51,753,000 51,133,000 50,309,000 52,562,000 48,822,000 45,027,000  -76,324,000 21,277,000 31,480,000 27,597,000  -39,715,000 21,277,000 
      other property related income
    31,730,000 32,596,000 29,766,000 29,104,000 29,268,000 28,958,000 26,316,000 25,792,000 25,857,000 25,760,000 24,384,000 24,406,000 25,619,000 23,861,000 22,280,000 21,191,000 21,892,000 21,218,000 19,304,000 18,383,000 18,916,000 16,522,000 16,902,000 16,907,000 18,054,000 16,922,000 15,675,000 15,368,000 15,494,000 15,047,000 14,247,000 13,897,000 14,241,000 13,880,000 12,983,000 12,842,000 13,007,000 12,643,000 11,763,000 11,434,000 11,827,000 11,385,000 10,543,000 9,977,000 10,142,000 9,799,000 10,147,000 8,150,000 8,580,000 8,854,000 7,694,000 7,283,000 7,677,000 6,988,000 6,072,000 5,837,000 5,862,000 5,650,000 4,759,000 4,721,000 5,155,000 4,702,000 4,081,000 4,114,000 4,361,000 4,676,000 3,863,000 4,160,000 4,641,000 4,249,000 3,687,000 3,899,000 4,236,000 4,433,000 4,282,000 4,339,000 3,844,000 3,618,000 3,101,000  -5,712,000 1,004,000 2,304,000 2,118,000  -1,531,000 1,004,000 
      property management fee income
    9,950,000 10,150,000 10,505,000 10,396,000 10,668,000 10,460,000 9,900,000 9,296,000 9,551,000 9,135,000 8,560,000 8,633,000 8,952,000 8,670,000 7,914,000 8,214,000 8,263,000 7,670,000 7,061,000 7,371,000 7,088,000 6,792,000 6,194,000 6,021,000 6,286,000 6,068,000 5,578,000 5,459,000 5,400,000 4,925,000 4,469,000 4,522,000 3,925,000 3,455,000 2,997,000 3,054,000 2,673,000 2,345,000 2,111,000 1,826,000 1,758,000 1,683,000 1,589,000 1,569,000 1,558,000 1,467,000 1,406,000 1,233,000 1,185,000 1,217,000 1,145,000 1,124,000 1,094,000 1,103,000 1,020,000 1,134,000 878,000 848,000 909,000 1,147,000 1,048,000 590,000                          
      total revenues
    285,080,000 282,303,000 273,036,000 267,726,000 270,890,000 266,209,000 261,406,000 265,125,000 267,876,000 260,805,000 256,528,000 260,987,000 261,408,000 248,664,000 238,565,000 221,912,000 212,564,000 199,247,000 188,841,000 178,787,000 172,511,000 163,798,000 164,081,000 165,506,000 166,547,000 159,017,000 152,845,000 153,882,000 153,370,000 147,815,000 142,877,000 143,482,000 143,865,000 138,559,000 133,037,000 132,546,000 132,096,000 126,526,000 118,871,000 114,992,000 115,970,000 109,871,000 103,688,000 100,267,000 97,092,000 92,337,000 87,267,000 81,958,000 82,832,000 82,302,000 78,457,000 75,011,000 74,134,000 69,324,000 67,199,000 63,648,000 60,445,000 59,404,000 57,541,000 52,145,000 57,012,000 54,757,000 53,123,000 52,931,000 54,859,000 57,012,000 57,676,000 58,454,000 60,720,000 60,407,000 60,063,000 59,417,000 58,306,000 56,308,000 55,532,000 55,105,000 56,406,000 52,440,000 48,128,000  -82,036,000 22,281,000 33,784,000 29,715,000  -41,246,000 22,281,000 
      yoy
    5.24% 6.05% 4.45% 0.98% 1.13% 2.07% 1.90% 1.59% 2.47% 4.88% 7.53% 17.61% 22.98% 24.80% 26.33% 24.12% 23.22% 21.64% 15.09% 8.02% 3.58% 3.01% 7.35% 7.55% 8.59% 7.58% 6.98% 7.25% 6.61% 6.68% 7.40% 8.25% 8.91% 9.51% 11.92% 15.27% 13.91% 15.16% 14.64% 14.69% 19.44% 18.99% 18.82% 22.34% 17.22% 12.19% 11.23% 9.26% 11.73% 18.72% 16.75% 17.85% 22.65% 16.70% 16.78% 22.06% 6.02% 8.49% 8.32% -1.48% 3.92% -3.96% -7.89% -9.45% -9.65% -5.62% -3.97% -1.62% 4.14% 7.28% 8.16% 7.83% 3.37% 7.38% 15.38%  -168.76% 135.36% 42.46%   -154.02% 51.63%     
      qoq
    0.98% 3.39% 1.98% -1.17% 1.76% 1.84% -1.40% -1.03% 2.71% 1.67% -1.71% -0.16% 5.12% 4.23% 7.50% 4.40% 6.68% 5.51% 5.62% 3.64% 5.32% -0.17% -0.86% -0.63% 4.74% 4.04% -0.67% 0.33% 3.76% 3.46% -0.42% -0.27% 3.83% 4.15% 0.37% 0.34% 4.40% 6.44% 3.37% -0.84% 5.55% 5.96% 3.41% 3.27% 5.15% 5.81% 6.48% -1.06% 0.64% 4.90% 4.59% 1.18% 6.94% 3.16% 5.58% 5.30% 1.75% 3.24% 10.35% -8.54% 4.12% 3.08% 0.36% -3.51% -3.78% -1.15% -1.33% -3.73% 0.52% 0.57% 1.09% 1.91% 3.55% 1.40% 0.77% -2.31% 7.56% 8.96%   -468.19% -34.05% 13.69%   -285.12%  
      operating expenses
                                                                                           
      property operating expenses
    90,848,000 89,028,000 82,934,000 75,748,000 81,868,000 83,097,000 77,037,000 71,286,000 77,546,000 74,821,000 71,127,000 72,493,000 76,728,000 73,472,000 70,567,000 63,060,000 64,065,000 63,751,000 61,228,000 55,448,000 57,101,000 55,345,000 55,740,000 54,729,000 53,465,000 50,120,000 51,425,000 49,829,000 48,755,000 49,528,000 48,754,000 44,661,000 47,152,000 44,821,000 44,874,000 42,216,000 41,805,000 41,607,000 40,219,000 38,234,000 39,297,000 38,210,000 37,431,000 34,709,000 33,622,000 32,080,000 32,290,000 30,276,000 30,104,000 29,955,000 30,821,000 27,794,000 29,195,000 27,645,000 27,285,000 25,106,000 24,940,000 25,085,000 25,610,000 21,775,000 24,602,000 24,421,000 22,973,000 22,154,000 23,153,000 26,002,000 24,457,000 23,845,000 25,774,000 25,494,000 25,389,000 26,327,000 25,110,000 22,315,000 23,239,000 24,755,000 21,978,000 20,954,000 18,860,000  -27,837,000 7,879,000 12,014,000 10,796,000  -13,929,000 7,879,000 
      depreciation and amortization
    66,688,000 66,488,000 59,156,000 52,741,000 51,210,000 51,035,000 50,717,000 50,566,000 49,985,000 50,358,000 50,329,000 69,433,000 79,574,000 79,046,000 82,557,000 68,229,000 55,871,000 54,139,000 53,810,000 37,758,000 38,084,000 39,893,000 40,838,000 41,063,000 43,379,000 40,663,000 38,442,000 38,099,000 35,239,000 35,046,000 34,966,000 34,855,000 35,971,000 36,736,000 38,119,000 39,234,000 41,827,000 41,448,000 39,356,000 37,064,000 38,744,000 38,086,000 37,895,000 36,589,000 31,622,000 30,487,000 28,115,000 26,347,000 28,495,000 29,241,000 29,832,000 31,428,000 29,774,000 27,474,000 25,763,000 21,361,000 16,042,000 15,945,000 15,572,000 14,687,000 15,557,000 16,363,000 16,378,000 17,297,000 17,894,000 18,700,000 18,736,000 18,634,000 19,416,000                   
      general and administrative
    16,506,000 14,897,000 16,068,000 15,151,000 14,265,000 14,622,000 15,625,000 13,982,000 14,060,000 14,325,000 14,674,000 12,983,000 13,390,000 13,725,000 14,525,000 13,238,000 12,095,000 11,560,000 10,916,000 11,322,000 10,193,000 9,543,000 10,365,000 9,602,000 10,011,000 9,800,000 9,147,000 10,847,000 9,780,000 8,341,000 8,744,000 8,223,000 8,228,000 8,800,000 9,494,000 8,639,000 8,065,000 7,891,000 8,228,000 7,082,000 7,002,000 7,114,000 7,173,000 7,330,000 7,464,000 7,059,000 6,569,000 7,109,000 7,326,000 7,515,000 7,613,000 6,549,000 6,860,000 6,278,000 6,444,000 6,343,000 5,476,000 6,841,000 6,031,000 6,098,000 6,597,000 6,844,000 5,868,000 5,911,000 5,556,000 5,626,000 5,474,000 7,151,000 5,849,000 6,469,000 5,495,000 5,230,000 5,173,000 5,648,000 5,888,000 4,865,000 7,289,000 4,132,000 5,389,000  -5,800,000  3,229,000 3,025,000    
      total operating expenses
    174,042,000 170,413,000 158,158,000 143,640,000 147,343,000 148,754,000 143,379,000 135,834,000 141,591,000 139,504,000 136,130,000 154,909,000 169,692,000 166,243,000 167,649,000 144,527,000 132,031,000 129,450,000 125,954,000 104,528,000 105,378,000 104,781,000 106,943,000 105,394,000 106,855,000 100,583,000 99,014,000 98,775,000 93,774,000 92,915,000 92,464,000 87,971,000 91,586,000 91,025,000 92,646,000 90,848,000 92,585,000 93,509,000 90,145,000 83,196,000 86,265,000 84,163,000 83,009,000 82,454,000 73,966,000 69,626,000 66,974,000 63,732,000 65,925,000 66,711,000 68,266,000 65,771,000 65,829,000 61,397,000 59,492,000 52,810,000 46,458,000 47,871,000 47,213,000 42,560,000 46,756,000 47,628,000 45,219,000 45,362,000 46,603,000 50,328,000 48,667,000 49,630,000 51,039,000 52,214,000 50,834,000 51,274,000 48,793,000 44,817,000 46,032,000 47,648,000 46,067,000 41,105,000 39,118,000  -55,356,000 14,386,000 23,987,000 21,842,000  -22,609,000 14,386,000 
      other income
                                                                                           
      interest:
                                                                                           
      interest expense on loans
    -29,380,000 -29,090,000 -26,100,000 -22,384,000 -22,750,000 -22,767,000 -22,919,000 -22,626,000 -23,204,000 -23,544,000 -23,691,000 -23,555,000 -23,850,000 -23,055,000 -22,824,000 -20,980,000 -19,122,000 -19,112,000 -19,234,000 -19,523,000 -18,984,000 -18,702,000 -18,681,000 -18,667,000 -18,207,000 -18,134,000 -17,517,000 -16,335,000 -15,191,000 -15,451,000 -15,155,000 -14,924,000 -14,454,000 -13,975,000 -13,599,000 -13,328,000 -12,787,000 -12,200,000 -12,084,000 -11,412,000 -10,399,000 -10,868,000 -11,057,000 -8,917,500 -11,772,000  -11,871,000 -7,761,250 -9,995,000                           -8,246,500 -12,009,000 -10,977,000 -10,000,000         
      loan procurement amortization expense
    -1,258,000 -1,221,000 -1,221,000 -1,036,000 -986,000 -1,015,000 -1,030,000 -1,030,000 -1,030,000 -1,041,000 -1,040,000 -1,012,000 -969,000 -959,000 -957,000 -5,109,000 -1,012,000 -1,012,000 -1,035,000 -414,000 -753,000 -753,000 -754,000 -737,000 -687,000 -771,000 -624,000 -578,000 -578,000 -578,000 -579,000 -579,000 -577,000 -776,000 -706,000 -706,000 -655,000 -611,000 -605,000 -582,000 -537,000 -659,000 -546,000 -412,500 -566,000  -541,000 -377,250 -536,000                           -376,250 -529,000 -447,000 -395,000  1,088,000 -2,935,000 385,000 373,000  4,913,000 -2,935,000 
      equity in earnings of real estate ventures
    648,000 547,000 379,000 811,000 418,000 425,000 845,000 1,603,000 1,141,000 790,000 2,551,000 1,345,000 46,558,000 680,000 294,000 24,123,000 816,000   -54,000 -37,000  -5,000 2,735,000 152,000 10,527,000 261,000                                                             
      other
    1,368,000 306,000 809,000 414,000 721,000 88,000 -65,000 5,899,000 -119,000 777,000 -276,000 -684,000 -15,000 -493,000 -9,163,000 -12,411,000 539,000 377,000 677,000 -448,000 45,000 -456,000 619,000 112,000 1,647,000 -178,000 -165,000 -54,000 -233,000 189,000 304,000 -69,000 741,000 308,000 -108,000 228,000 -397,000 901,000 330,000 584,000 -288,000 -208,000 -316,000 -275,750 -337,000  -593,000 290,000 -22,000    166,000    1,000           -94,000 49,000 71,000 67,000     264,000 -13,000 -102,000 42,000  -141,000 67,000 -30,000 16,000    
      total other expense
    -28,622,000 -29,458,000 -26,133,000 -22,195,000 -22,597,000 -23,269,000 -23,169,000   -23,018,000 -22,456,000   -23,827,000 -32,650,000     -14,658,750 -19,729,000  -18,821,000 -10,924,000 -17,095,000 -8,556,000 -18,045,000   -16,149,000  -11,112,750 -14,570,000 -14,696,000 -15,185,000   -12,634,000 -12,871,000     -10,726,500 -14,535,000  -16,053,000                                  -5,980,000 -10,166,000  6,196,000    
      net income
    82,416,000 82,432,000 88,745,000 101,891,000 100,950,000 94,186,000 94,858,000 113,137,000 103,073,000 98,283,000 97,942,000 82,172,000 113,440,000 58,594,000 38,266,000 46,563,000 90,569,000 50,366,000 43,315,000 42,958,000 47,404,000 38,932,000 38,317,000 42,510,000 42,597,000 49,878,000 35,786,000 48,636,000 43,302,000 38,751,000 34,799,000 39,858,000 37,709,000 32,838,000 25,206,000 27,047,000 25,091,000 20,383,000 15,855,000 37,741,000 18,620,000 13,873,000 8,522,000 5,542,000 8,591,000 7,993,000 4,576,000 23,253,000 16,601,000 2,568,000 -1,894 1,480,000 2,051,000 3,355,000 -5,345 -7,545,000 7,928,000 1,588,000 476,000 -6,009,524 -1,480 -4,521 -3,475 -2,131,937 7,503,000 -2,844 -2,109 2,490,000 4,020,000 263,000 -3,984,000 -5,877,000 -4,130,000 295,000 -3,358,000 -5,818,000 -1,941,000 -30,000 -1,587,000  -35,384,000 -2,271,000 2,204,000 1,617,000  -29,488,000 -2,271,000 
      yoy
    -18.36% -12.48% -6.44% -9.94% -2.06% -4.17% -3.15% 37.68% -9.14% 67.74% 155.95% 76.47% 25.25% 16.34% -11.66% 8.39% 91.06% 29.37% 13.04% 1.05% 11.28% -21.95% 7.07% -12.60% -1.63% 28.71% 2.84% 22.02% 14.83% 18.01% 38.06% 47.37% 50.29% 61.10% 58.98% -28.34% 34.75% 46.93% 86.05% 581.00% 116.74% 73.56% 86.23% -76.17% -48.25% 211.25% -241705.07% 1471.15% 709.41% -23.46% -64.57% -119.62% -74.13% 111.27% -101.12% 25.55% -535775.68% -35224.97% -13797.84% 181.88% -100.02% 58.97% 64.77% -185.62% 86.64% -101.08% -99.95% -142.37% -197.34% -10.85% 18.64% 1.01% 112.78% -1083.33% 111.59%  -94.51% -98.68% -172.01%   -92.30% -197.05%     
      qoq
    -0.02% -7.11% -12.90% 0.93% 7.18% -0.71% -16.16% 9.76% 4.87% 0.35% 19.19% -27.56% 93.60% 53.12% -17.82% -48.59% 79.82% 16.28% 0.83% -9.38% 21.76% 1.61% -9.86% -0.20% -14.60% 39.38% -26.42% 12.32% 11.74% 11.36% -12.69% 5.70% 14.83% 30.28% -6.81% 7.80% 23.10% 28.56% -57.99% 102.69% 34.22% 62.79% 53.77% -35.49% 7.48% 74.67% -80.32% 40.07% 546.46% -135686.06% -100.13% -27.84% -38.87% -62868.94% -99.93% -195.17% 399.24% 233.61% -107.92% 405948.92% -67.26% 30.10% -99.84% -128.41% -263918.57% 34.85% -100.08% -38.06% 1428.52% -106.60% -32.21% 42.30% -1500.00% -108.78% -42.28% 199.74% 6370.00% -98.11%   1458.08% -203.04% 36.30%   1198.46%  
      net income margin %
    28.91% 29.20% 32.50% 38.06% 37.27% 35.38% 36.29% 42.67% 38.48% 37.68% 38.18% 31.49% 43.40% 23.56% 16.04% 20.98% 42.61% 25.28% 22.94% 24.03% 27.48% 23.77% 23.35% 25.68% 25.58% 31.37% 23.41% 31.61% 28.23% 26.22% 24.36% 27.78% 26.21% 23.70% 18.95% 20.41% 18.99% 16.11% 13.34% 32.82% 16.06% 12.63% 8.22% 5.53% 8.85% 8.66% 5.24% 28.37% 20.04% 3.12% -0.00% 1.97% 2.77% 4.84% -0.01% -11.85% 13.12% 2.67% 0.83% -11.52% -0.00% -0.01% -0.01% -4.03% 13.68% -0.00% -0.00% 4.26% 6.62% 0.44% -6.63% -9.89% -7.08% 0.52% -6.05% -10.56% -3.44% -0.06% -3.30%  43.13% -10.19% 6.52% 5.44%  71.49% -10.19% 
      net income attributable to noncontrolling interests in the operating partnership
    -396,000 -401,000 -453,000 -543,000 -551,000 -524,000 -541,000                                                                                 
      net loss attributable to noncontrolling interests in subsidiaries
    910,000 929,000 905,000 544,000 398,000 302,000 210,000                                                                                 
      net income attributable to the company
    82,930,000 82,960,000 89,197,000 101,892,000 100,797,000 93,964,000 94,527,000                         39,547,000 37,297,000 32,458,000 24,986,000 26,847,000 24,884,000 20,424,000 15,750,000 37,116,000 18,438,000 13,724,000 8,434,000 5,483,000 8,480,000 7,886,000 4,530,000 22,948,000 16,342,000 2,550,000  1,481,000 1,636,000 2,543,000  -8,011,000 6,828,000 902,000 -117,000 2,083,000 -1,480,000 -4,521,000 -3,475,000 -2,802,000 6,818,000 -2,844,000 -2,109,000                     
      basic earnings per share attributable to common shareholders
    0.36 0.36 0.39 0.45 0.45 0.42 0.42 0.5 0.46 0.43 0.43 0.36 0.5 0.26 0.17 0.21 0.43 0.24 0.21 0.21 0.24 0.2 0.2 0.22 0.22 0.26 0.19 0.26 0.23 0.21 0.19 0.21 0.21 0.18 0.14 0.13 0.13 0.11 0.08 0.21 0.1 0.07 0.04 0.03 0.05 0.04 0.02 0.16 0.11 0.01  -0.008                                    
      diluted earnings per share attributable to common shareholders
    0.36 0.36 0.39 0.44 0.44 0.41 0.42 0.5 0.45 0.43 0.43 0.36 0.5 0.26 0.17 0.21 0.43 0.24 0.21 0.22 0.24 0.2 0.2 0.21 0.22 0.26 0.19 0.25 0.23 0.21 0.19 0.22 0.21 0.18 0.14 0.13 0.13 0.11 0.08 0.21 0.1 0.07 0.04 0.03 0.05 0.04 0.02 0.16 0.11 0.01  -0.008                                    
      weighted-average basic shares outstanding
    228,791 228,737 228,663 226,353 226,166 225,886 225,767 225,424 225,467 225,388 225,294 224,928 225,023 224,960 224,663 203,832 202,194 201,414 199,160 194,147 193,745 193,629 193,582 190,874 192,927 189,667 187,253 184,653 186,074 183,718 182,274 180,525 180,304 180,183 180,165 178,246 179,223 177,880 175,798 168,640 169,304 166,683 165,502 149,107 149,758 144,679 140,219 135,191 135,365 133,677   124,169    98,895           57,621    57,497  57,438   57,351 57,325 57,257         
      weighted-average diluted shares outstanding
    229,295 229,303 229,169 227,150 227,149 226,618 226,575 226,241 226,210 226,275 226,183 225,881 225,966 225,895 225,737 205,009 203,797 202,809 200,233 194,943 194,539 194,192 194,264 191,576 193,817 190,543 187,984 185,495 186,916 184,523 183,222 181,448 181,286 181,189 181,265 179,533 180,478 179,221 177,261 170,191 170,901 168,224 167,165 150,863 152,006 146,999 142,774 137,742 138,106 136,329   125,976    100,284           57,621    57,497  57,438   57,351 57,325 57,257    37,519,841 37,483,309    
      ​
                                                                                           
      total other income
           -17,171,500 -23,212,000   -8,688,250 21,724,000   -7,241,750 10,036,000 -19,431,000 -19,572,000   -20,085,000      -6,471,000 -16,294,000  -15,614,000     -14,651,000 -14,420,000   5,945,000 -11,085,000 -11,835,000 -12,157,000     -8,767,250 -11,023,000                           -8,674,750 -12,456,000 -11,367,000 -10,742,000    7,497,000   -11,749,000 -10,166,000 
      net loss attributable to noncontrolling interests
                                                                                           
      noncontrolling interests in the operating partnership
           -467,500 -640,000 -616,000 -614,000 -527,000 -733,000 -379,000 -292,000 -1,407,000 -3,149,000 -1,768,000 -1,549,000 -579,000 -474,000 -389,000 -383,000 -425,000 -426,000 -499,000 -358,000 -535,000 -476,000 -426,000 -383,000 -399,000 -490,000 -427,000 -277,000 -259,000 -283,000 -227,000 -172,000 -485,000 -223,000 -161,000 -91,000 -62,500 -106,000  -49,000 -60,000 -257,000  35,000 1,000   149,000    5,000 -106,000 76,000 233,000 178,000 153,000 -512,000                       
      noncontrolling interest in subsidiaries
           165,500 212,000 212,000 238,000 217,000 181,000 143,000 181,000 192,000 230,000 154,000 -34,000 -50,000 -39,000 -38,000 -38,000 -40,000 -17,000 41,000 70,000 55,000 74,000 85,000 7,000 88,000 78,000 47,000 57,000 59,000 76,000 268,000 67,000 -140,000 41,000 12,000 3,000    3,000    1,000                                     
      net income attributable to the company’s common shareholders
           112,667,000 102,645,000 97,879,000 97,566,000 81,862,000 112,888,000 58,358,000 38,155,000 45,348,000 87,650,000 48,752,000 41,732,000 42,329,000 46,891,000 38,505,000 37,896,000 42,045,000 42,154,000 49,420,000 35,498,000 48,156,000 42,900,000 38,410,000 34,423,000 39,547,000 37,297,000 32,458,000 24,986,000 23,371,000 23,382,000 18,922,000 14,248,000 35,614,000 16,936,000 12,222,000 6,932,000 3,981,000 6,978,000 6,384,000 3,028,000    -1,894,000 -21,000 134,000 1,041,000 -5,345,000                                 
      gains from sales of real estate
                   3,883,000 28,815,000                                                                       
      equity in earnings (losses) of real estate ventures
                     316,000 20,000                     -49,750 139,000                                               
      net (income) loss attributable to noncontrolling interests
                                                                                           
      net income attributable to noncontrolling interests
                                                                      177,000                     
      equity in (losses) earnings of real estate ventures
                         -174,000              -454,250 -581,000                                                   
      acquisition related costs
                                   232,000 235,000 668,000 159,000 759,000 888,000 2,563,000 2,342,000 816,000 1,222,000 753,000 510,000 3,826,000 1,258,000  -1,679,000 -558,250 -470,000                                       
      operating income
                               41,227,250 59,596,000 54,900,000 50,413,000 55,511,000 52,279,000 47,534,000 40,391,000 41,698,000 39,511,000 33,017,000 28,726,000 31,796,000 29,705,000 25,708,000 20,679,000 17,813,000 23,126,000 22,711,000 20,293,000 18,226,000 16,907,000 15,591,000 10,191,000 9,240,000 8,305,000 7,927,000 7,707,000 10,838,000 13,987,000 11,533,000 10,328,000 9,585,000 10,256,000 7,129,000 7,904,000 7,569,000 8,256,000 6,684,000 9,009,000 8,824,000 9,681,000 8,193,000 9,229,000 8,143,000 9,513,000 11,491,000 9,500,000 7,457,000 10,339,000 11,335,000 9,010,000  -26,680,000 7,895,000 9,797,000 7,873,000  -18,637,000 7,895,000 
      yoy
                               -25.73% 14.00% 15.50% 24.81% 33.13% 32.32% 43.97% 40.61% 31.14% 33.01% 28.43% 38.91% 78.50% 28.45% 13.20% 1.90% -2.27% 36.78% 45.67% 99.13% 97.25% 103.58% 96.68% 32.23% -14.74% -40.62% -31.27% -25.38% 13.07% 36.38% 61.78% 30.67% 26.63% 24.22% 6.66% -12.27% -14.22% -14.72% -18.42% -2.38% 8.36% 1.77% -28.70% -2.85% 9.20% -7.99% 1.38% 5.44%  -138.75% 43.57% -8.03%   -142.36% 24.09%     
      qoq
                               -30.82% 8.55% 8.90% -9.18% 6.18% 9.98% 17.68% -3.13% 5.54% 19.67% 14.94% -9.66% 7.04% 15.55% 24.32% 16.09% -22.97% 1.83% 11.92% 11.34% 7.80% 8.44% 52.99% 10.29% 11.26% 4.77% 2.85% -28.89% -22.51% 21.28% 11.67% 7.75% -6.54% 43.86% -9.81% 4.43% -8.32% 23.52% -25.81% 2.10% -8.85% 18.16% -11.23% 13.34% -14.40% -17.21% 20.96% 27.40% -27.88% -8.79% 25.80%   -437.94% -19.41% 24.44%   -336.06%  
      operating margin %
    0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 26.79% 38.86% 37.14% 35.28% 38.69% 36.34% 34.31% 30.36% 31.46% 29.91% 26.10% 24.17% 27.65% 25.61% 23.40% 19.94% 17.77% 23.82% 24.60% 23.25% 22.24% 20.41% 18.94% 12.99% 12.32% 11.20% 11.43% 11.47% 17.03% 23.14% 19.41% 17.95% 18.38% 17.99% 13.02% 14.88% 14.30% 15.05% 11.72% 15.62% 15.10% 15.94% 13.56% 15.37% 13.70% 16.32% 20.41% 17.11% 13.53% 18.33% 21.62% 18.72%  32.52% 35.43% 29.00% 26.50%  45.18% 35.43% 
      equity in losses of real estate ventures
                               -80,000 -292,000 -309,000 -184,000 -81,000 -280,000 -253,000 -772,000   -724,000 -512,000   -100,000 -238,000                                             
      distribution to preferred shareholders
                                       -539,000 -1,502,000 -1,502,000 -1,502,000 -1,502,000 -1,502,000 -1,502,000 -1,502,000 -1,126,500 -1,502,000   -1,126,500 -1,502,000                                       
      gain from sale of real estate
                                                 475,000                                          
      income from continuing operations
                                           37,741,000 18,620,000 13,873,000 8,522,000 5,542,000 8,591,000 7,993,000 4,240,000 5,407,000 5,884,000 2,576,000 -2,299 -4,384 1,892,000 -5,185 -5,345 -3,062,815 4,040,000 -906 476,000 -9,841,387 -1,527 -4,521 -3,475 -3,953 -4,011 -4,860 -2,577                   -102,500 -2,271,000 
      discontinued operations
                                                                                           
      income from discontinued operations
                                                  336,000 -56,000 1,407,000  184,000 977,000  246,000  185,000 361,000 1,895,000  1,863,000 49,000   204,000 684,000 72,000 9,000 6,377,000 7,244,000 5,011,000 561,000 348,000  1,964,000              
      total discontinued operations
                                                  336,000 17,846,000 10,717,000  412,000 4,385,000 159,000 6,452,000  561,000 3,888,000 1,808  3,689,000 49,000   813,000 11,594,000 2,194,000 509,000                     
      basic earnings per share from continuing operations attributable to common shareholders
                                           0.21 0.1 0.07 0.04 0.02 0.05 0.04 0.02  0.03 0.01  -0.023                                    
      basic earnings per share from discontinued operations attributable to common shareholders
                                                   0.13 0.08   0.015                                    
      diluted earnings per share from continuing operations attributable to common shareholders
                                           0.21 0.1 0.07 0.04 0.02 0.05 0.04 0.02  0.03 0.01  -0.023                                    
      diluted earnings per share from discontinued operations attributable to common shareholders
                                                   0.13 0.08   0.015                                    
      amounts attributable to the company’s common shareholders:
                                                                                           
      equity in losses of real estate venture
                                               -1,239,500 -1,860,000  -1,369,000                                         
      gain from disposition of discontinued operations
                                                   17,902,000 9,310,000                                       
      noncontrolling interests in subsidiaries
                                               -3,500                                            
      gain on disposition of discontinued operations
                                                      228,000 3,408,000 197,000   376,000 3,527,000           6,296,000 7,544,000 5,308,000 571,000 395,000  2,122,000              
      distribution to preferred shares
                                                  -1,502,000                                         
      equity in loss of real estate venture
                                                                                           
      gain from remeasurement of investment in real estate venture
                                                        7,023,000                                   
      net income attributable to the company’s
                                                                                           
      common shareholders
                                                   3,498,500 14,840,000 1,048,000                                      
      (loss) income from discontinued operations
                                                                                           
      income (loss) from continuing operations
                                                     1,056                                      
      net income (income) attributable to noncontrolling interests
                                                                     242,000                      
      basic and diluted loss per share from continuing operations attributable to common shareholders
                                                      -0.02   -0.04 -0.04   -0.01  -0.02 -0.02 -0.05 -0.04 -0.04 -0.05 -0.08 -0.04                     
      basic and diluted earnings per share from discontinued operations attributable to common shareholders
                                                      0.01   0.05   0.04 0.02       0.14 0.03 0.01                     
      basic and diluted loss per share attributable to common shareholders
                                                      -0.01    -0.04       -0.05 -0.04    -0.03                     
      weighted-average basic and diluted shares outstanding
                                                      132,951 124,548  122,599 122,266 102,976  98,844 98,769 93,998 93,724 92,925 92,834 70,988 75,248 58,165 57,687  57,635 57,620 57,593  57,537  57,421             
      loan procurement amortization expense - early repayment of debt
                                                                                           
      income from early repayment of debt
                                                                                           
      gains on dispositions of discontinued operations
                                                         6,206,000                                  
      basic and diluted earnings per share attributable to common shareholders
                                                         0.01  0.02 0.07 0.01  0.02 -0.02   -0.04 0.09 -0.05                      
      interest income
                                                           5,250 7,000 5,000 9,000 5,000 19,000 62,000 535,000 432,000 150,000 55,000 44,000 27,000 34,000 32,000 59,000 93,000 104,000 91,000 115,000 203,000 95,000 159,000 884,000       16,750 67,000 
      basic and diluted earnings per share from continuing operations attributable to common shareholders
                                                           0.003 0.03                               
      net gain on disposition of discontinued operations
                                                                   609,000 10,910,000 2,122,000 500,000                     
      other - related party
                                                                           25,000 101,000 122,000              
      property operating expenses - related party
                                                                            8,000 14,000              
      lease abandonment
                                                                            1,316,000               
      general and administrative - related party
                                                                            118,000 118,000              
      income before minority interests and discontinued operations
                                                                                           
      minority interests
                                                                       279,000 284,000 407,000 397,000 563,000 364,000 149,000 304,000 524,000 176,000 2,000          
      income from operations
                                                                       631,000 338,000 145,000 39,000 -16,000  17,000              
      minority interest attributable to discontinued operations
                                                                                           
      basic and diluted loss per share from continuing operations
                                                                       -0.06 -0.06 -0.08 -0.08 -0.04 -0.07               
      basic and diluted earnings per share from discontinued operations
                                                                       0.1 0.13 0.09 0.01 0.01  0.03              
      basic and diluted earnings per share
                                                                       0.04 0.07                   
      distributions declared per common share and unit
                                                                       0.025 0.18 0.18 0.18 0.18 0.29 0.29 0.29 0.218 0.29           
      depreciation
                                                                         20,251,000 19,950,000 19,717,000 17,068,000 16,722,000 16,767,000 17,918,000 16,405,000 15,734,000 14,672,000  -21,833,000 5,322,000 8,744,000 8,021,000  -9,509,000 5,322,000 
      income from continuing operations before minority interests
                                                                                           
      basic and diluted income per share
                                                                         0.01                  
      basic and diluted loss per share
                                                                          -0.07 -0.033 -0.07  -0.06             
      asset write-off
                                                                               -2,000 307,000           
      write-off of loan procurement cost due to early extinguishment of debt
                                                                               -318,250   -1,273,000         
      income from continuing
                                                                                           
      operations
                                                                                           
      basic and diluted earnings per share from continuing operations
                                                                             -0.03              
      other—related party
                                                                              117,000             
      property operating expenses—related party
                                                                              37,000             
      general and administrative—related party
                                                                              101,000             
      income before minority interests
                                                                               -745,500 -2,117,000 -32,000          
      revenues:
                                                                                           
      operating expenses:
                                                                                           
      property operating expenses — related party
                                                                               11,750 15,000           
      general and administrative — related party
                                                                               130,750 73,000 273,000 177,000         
      other income:
                                                                                           
      basic earnings per share
                                                                               -0.013 -0.03  -0.03         
      diluted earnings per share
                                                                               -0.013 -0.03  -0.03         
      property operating expense — related party
                                                                                 12,000 20,000         
      distributions declared per common share
                                                                                 0.29 0.29         
      income before minority interest
                                                                                  -1,732,000  1,459,250 -2,271,000 2,300,000 1,677,000    
      minority interest
                                                                                  145,000  1,249,000  -96,000 -60,000    
      management fees—related party
                                                                                     1,185,000      
      other expense:
                                                                                           
      interest expense
                                                                                    -5,663,750 -7,298,000 7,142,000 5,807,000  12,610,000 -7,298,000 
      basic income per share
                                                                                    0.038  0.06 0.04    
      diluted income per share
                                                                                    0.038  0.06 0.04    
      weighted-average basic common shares outstanding
                                                                                      37,477,920 37,477,920    
      distributions declared per share of common stock
                                                                                    -0.639  0.28     
      management fees to related party
                                                                                         856,250 1,185,000 
      discountinued operations
                                                                                           
      gain on sale of storage facilities
                                                                                           
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-09-30 2017-06-30 2017-03-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 
                                                                                        
        assets
                                                                                        
        storage properties
      8,108,076,000 8,098,390,000 8,084,827,000 7,628,774,000 7,422,281,000 7,415,426,000 7,397,588,000 7,367,613,000 7,332,817,000 7,323,638,000 7,303,888,000 7,295,778,000 7,284,661,000 7,268,162,000 7,232,103,000 7,183,494,000 5,573,816,000 5,536,376,000 5,492,183,000 5,489,754,000 4,814,261,000 4,802,024,000 4,716,549,000 4,699,844,000 4,674,717,000 4,640,556,000 4,489,732,000 4,463,455,000 4,323,372,000 4,237,717,000 4,201,909,000 4,086,960,000 4,071,098,000 4,020,366,000                                                 
        less: accumulated depreciation
      -1,730,103,000 -1,684,787,000 -1,638,631,000 -1,590,588,000 -1,544,603,000 -1,503,487,000 -1,458,854,000 -1,416,377,000 -1,375,321,000 -1,333,907,000 -1,290,075,000 -1,247,775,000 -1,207,230,000 -1,174,746,000 -1,130,001,000 -1,085,824,000 -1,047,322,000 -1,026,337,000 -997,712,000 -983,940,000 -980,312,000 -972,536,000 -944,958,000 -925,359,000 -936,862,000 -905,403,000 -884,941,000 -862,487,000 -838,325,000 -807,625,000 -785,010,000 -723,702,000 -719,214,000 -693,146,000 -685,771,000 -652,657,000 -622,824,000 -594,049,000 -569,493,000 -549,206,000 -520,114,000  -466,516,000  -419,460,000  -380,621,000  -367,336,000                                  
        cash and cash equivalents
      108,393,000 8,741,000 10,751,000 71,560,000 43,507,000 5,656,000 5,587,000 6,526,000 8,028,000 9,220,000 5,510,000 6,064,000 5,183,000 5,148,000 7,890,000 11,140,000 20,332,000 3,989,000 3,650,000 3,592,000 3,903,000 3,457,000 35,719,000 54,857,000 7,293,000 11,103,000 3,533,000 3,764,000 3,387,000 6,487,000 6,036,000 6,230,000 8,077,000 3,081,000 87,379,000 3,423,000 2,754,000 62,869,000 3,018,000 3,167,000 3,017,000 2,901,000 31,264,000 10,789,000 3,235,000 3,176,000 2,940,000 4,021,000 2,625,000 4,495,000 2,707,000 137,796,000 7,465,000 9,069,000 12,491,000 1,845,000 4,089,000 5,891,000 23,203,000 31,877,000 41,524,000 102,768,000 60,967,000 1,657,000 1,577,000 3,744,000 2,540,000 651,000 5,625,000 4,517,000 5,903,000 3,443,000 5,649,000 15,900,000 13,479,000 19,789,000 201,098,000 14,814,000     
        restricted cash
      6,364,000 5,591,000 5,003,000 6,103,000 1,848,000 1,614,000 2,026,000 1,691,000 1,872,000 1,925,000 3,272,000 2,861,000 3,021,000 2,956,000 2,573,000 2,178,000 39,738,000 2,238,000 2,342,000 2,637,000 2,815,000 2,935,000 2,760,000 3,584,000 5,555,000 4,280,000 3,008,000 2,718,000 3,092,000 3,037,000 2,946,000 4,189,000 4,164,000 6,556,000 8,052,000 9,017,000 2,652,000 24,600,000 2,746,000 3,229,000 3,675,000 3,305,000 4,254,000 3,587,000 3,964,000 4,025,000 4,226,000 4,540,000 5,484,000 6,070,000 7,579,000 6,618,000 11,486,000 11,291,000 11,228,000 9,747,000 9,612,000 10,250,000 15,528,000 13,961,000 13,521,000 16,381,000 16,524,000 18,798,000 16,244,000 16,217,000 18,618,000 18,199,000 16,090,000 15,818,000 19,449,000 16,865,000 15,508,000 14,714,000 15,396,000 13,982,000 14,672,000 15,484,000 14,090,000 8,430,000 7,211,000 6,042,000 
        loan procurement costs, net of amortization
      1,781,000 2,098,000 2,415,000 2,731,000 3,048,000 3,364,000 3,681,000 3,995,000 4,278,000 4,591,000 4,907,000 5,182,000 1,719,000 1,826,000 2,074,000 2,322,000 2,587,000 2,836,000 3,029,000 3,275,000 3,382,000 3,609,000 3,834,000 4,059,000 4,284,000 4,505,000 793,000 963,000 1,134,000 1,298,000 1,463,000 1,709,000 1,875,000 2,038,000 2,313,000 2,475,000 2,637,000 13,470,000 11,240,000 11,778,000 10,173,000 10,653,000 11,194,000 11,543,000 12,086,000 12,687,000 8,885,000 9,421,000 7,777,000 8,253,000 8,943,000 9,190,000 7,643,000 8,073,000 11,574,000 12,672,000 14,034,000 15,611,000 17,351,000 16,458,000 18,006,000 18,366,000 5,924,000 5,392,000 3,584,000                  
        investment in real estate ventures, at equity
      74,320,000 74,640,000 76,042,000 91,973,000 92,161,000 94,053,000 96,227,000 98,288,000 99,670,000 101,482,000 103,687,000 105,993,000 107,755,000 114,527,000 117,025,000 119,751,000 111,354,000 97,301,000 93,797,000 92,071,000 92,249,000 93,697,000 95,174,000 91,117,000 88,812,000 86,914,000 94,092,000 95,796,000 98,156,000 100,614,000 99,085,000 91,455,000 93,757,000 95,936,000 97,405,000 99,915,000 100,477,000 97,281,000       154,467,000       14,087,000 14,564,000 15,181,000 15,438,000                            
        other assets
      188,827,000 204,647,000 199,873,000 183,628,000 174,173,000 167,830,000 162,633,000 163,284,000 161,881,000 172,137,000 156,052,000 153,982,000 171,797,000 208,611,000 226,553,000 265,705,000 134,369,000 154,829,000 157,189,000 170,753,000 92,272,000 91,154,000 93,684,000 101,443,000 104,128,000 105,514,000 107,972,000 48,763,000 49,234,000 43,232,000 39,105,000 36,178,000 33,481,000 31,284,000 41,067,000 39,240,000 41,326,000 43,631,000 40,511,000 42,188,000 39,129,000 48,642,000 43,263,000 41,400,000 27,420,000 27,256,000 25,920,000 30,072,000 27,928,000 41,794,000 49,982,000 33,128,000 40,684,000 43,645,000 19,182,000 22,637,000 17,860,000 18,576,000 19,934,000 19,257,000 10,016,000 10,710,000 31,578,000 11,780,000 8,599,000 10,909,000   10,679,000 14,270,000 14,560,000 10,361,000 6,205,000 8,332,000 7,734,000 8,983,000 8,631,000 10,946,000 5,244,000 3,651,000 3,399,000 6,968,000 
        total assets
      6,757,658,000 6,709,320,000 6,740,280,000 6,394,181,000 6,192,415,000 6,184,456,000 6,208,888,000 6,225,020,000 6,233,225,000 6,281,149,000 6,291,005,000 6,325,830,000 6,371,170,000 6,428,799,000 6,461,541,000 6,548,079,000 4,836,054,000 4,771,232,000 4,754,478,000 4,778,142,000 4,028,570,000 4,024,340,000 4,002,762,000 4,029,545,000 3,950,330,000 3,947,469,000 3,814,189,000 3,752,972,000 3,640,050,000 3,584,760,000 3,565,534,000 3,503,019,000 3,493,238,000 3,466,115,000 3,519,199,000 3,362,509,000 3,206,687,000 3,114,834,000 2,929,906,000 2,863,953,000 2,808,000,000 2,786,339,000 2,544,966,000 2,503,123,000 2,442,531,000 2,358,624,000 2,203,163,000 2,197,722,000 2,112,933,000 2,150,319,000 2,167,713,000 2,088,978,000 1,937,913,000 1,875,979,000 1,503,118,000 1,509,462,000 1,475,707,000 1,478,819,000 1,497,194,000 1,485,034,000 1,501,976,000 1,598,870,000 1,567,523,000 1,562,712,000 1,575,053,000 1,597,659,000 1,623,022,000 1,657,425,000 1,681,755,000 1,687,831,000 1,698,729,000 1,587,558,000 1,607,435,000 1,624,765,000 1,551,179,000 1,512,329,000 1,481,488,000 1,192,132,000 879,613,000 818,673,000 775,874,000  
        liabilities and equity
                                                                                        
        unsecured senior notes
      3,223,866,000 2,782,701,000 2,781,666,000 2,780,631,000 2,779,596,000 2,778,560,000 2,777,525,000 2,776,490,000 2,775,455,000 2,774,420,000 2,773,385,000 2,772,350,000 2,771,315,000 2,770,280,000 2,769,245,000 2,768,209,000 2,032,253,000 2,031,626,000 2,030,999,000 2,030,372,000 1,837,219,000 1,836,721,000 1,836,223,000 1,835,725,000 1,489,483,000 1,489,088,000 1,488,692,000 1,143,524,000 1,143,258,000 1,142,992,000 1,142,726,000 1,142,194,000 1,141,928,000 1,039,423,000 1,038,728,000 742,402,000 742,153,000 750,000,000 500,000,000 500,000,000 500,000,000 500,000,000 500,000,000 500,000,000 500,000,000 500,000,000 250,000,000 250,000,000 250,000,000 250,000,000 250,000,000                                
        revolving credit facility
       366,300,000 382,400,000   10,600,000 18,400,000 18,100,000 15,200,000 63,200,000 61,400,000 60,900,000 86,000,000 168,900,000 185,400,000 209,900,000  24,600,000 52,800,000 117,800,000 37,300,000 15,400,000   237,980,000 257,150,000 96,145,000 195,525,000 94,250,000 47,700,000 136,400,000 66,700,000 60,000,000 53,000,000  150,000,000 54,300,000  167,800,000 161,600,000 80,000,000 78,000,000  56,900,000 70,600,000 38,600,000 88,300,000 110,000,000 30,000,000 45,000,000 65,500,000  50,000,000   9,000,000 40,500,000 43,000,000      104,000,000 163,000,000 172,000,000 182,700,000 212,200,000 235,000,000 219,000,000 191,500,000 107,500,000 107,500,000 170,500,000 88,000,000 46,000,000  108,300,000     
        mortgage loans and notes payable
      204,681,000 205,092,000 205,500,000 205,915,000 94,788,000 95,388,000 127,239,000 128,186,000 129,130,000 130,070,000 161,711,000 162,918,000 164,116,000 165,305,000 166,489,000 167,676,000 168,855,000 170,025,000 171,189,000 216,504,000 93,707,000 94,488,000 95,263,000 96,040,000 96,810,000 106,596,000 107,414,000 108,246,000 109,058,000 109,851,000 110,635,000 112,214,000 112,977,000 107,647,000 115,393,000 138,716,000 101,716,000 112,212,000 120,444,000 142,292,000 196,868,000 195,851,000 215,849,000 224,232,000 226,025,000 200,218,000 206,100,000 214,453,000 226,460,000 228,759,000 258,849,000 244,756,000 387,802,000 358,441,000 346,018,000 347,645,000 382,541,000 372,457,000 456,174,000 465,854,000 483,324,000 569,026,000 528,118,000 593,182,000 545,461,000 548,085,000 551,256,000 556,441,000 559,609,000 561,057,000 580,294,000 583,427,000 586,804,000          
        lease liabilities - finance leases
      65,612,000 65,636,000 65,649,000 65,668,000 65,677,000 65,685,000 65,699,000 65,714,000 65,720,000 65,727,000 65,740,000 65,758,000 65,764,000 65,771,000 65,783,000 65,801,000 65,807,000 65,798,000 65,710,000 65,599,000                                                               
        accounts payable, accrued expenses and other liabilities
      246,162,000 237,415,000 220,271,000 229,581,000 223,516,000 230,287,000 202,800,000 201,419,000 222,052,000 214,733,000 188,199,000 213,297,000 218,181,000 217,040,000 197,685,000 199,985,000 177,328,000 176,854,000 166,025,000 159,140,000 153,568,000 165,635,000 136,310,000 137,880,000 150,532,000 164,533,000 168,174,000 149,914,000 153,185,000 146,223,000 122,703,000 139,368,000 126,621,000 104,200,000 93,854,000 96,795,000 96,245,000 85,034,000 88,259,000 81,805,000 70,116,000 69,198,000 63,139,000 57,847,000 49,627,000 57,599,000 55,113,000 54,241,000 52,405,000 60,708,000 63,033,000 55,453,000 46,263,000 51,025,000 50,028,000 37,105,000 32,104,000 36,172,000 40,646,000 35,400,000 27,749,000 33,767,000 38,908,000 32,212,000 29,927,000 39,410,000                 
        distributions payable
      119,676,000 119,678,000 119,639,000 119,600,000 116,420,000 116,014,000 115,918,000 115,820,000 111,279,000 111,280,000 111,215,000 111,190,000 97,492,000 97,444,000 97,439,000 97,417,000 71,696,000 71,277,000 70,854,000 68,301,000 64,711,000 64,703,000 64,691,000 64,688,000 62,645,000 62,029,000 60,978,000 60,627,000 56,584,000 56,442,000 55,382,000 49,407,000 49,382,000 49,255,000 39,781,000 39,449,000 39,210,000 38,685,000 29,241,000 28,685,000 28,480,000 28,137,000 21,799,000 20,960,000 20,321,000 19,955,000 16,813,000 16,550,000 16,455,000 16,419,000 12,110,000 11,712,000 11,710,000 11,401,000 7,293,000 7,260,000 7,292,000 7,275,000 2,515,000 2,435,000 2,456,000 2,448,000 2,445,000 1,630,000 1,582,000 1,572,000 11,325,000 11,324,000 11,326,000 11,300,000 18,236,000 18,196,000 18,192,000 18,184,000 16,658,000 16,652,000 16,624,000 10,498,000 10,457,000 10,498,000 7,532,000  
        deferred revenue
      42,723,000 43,224,000 42,348,000 38,918,000 39,786,000 40,576,000 39,268,000 38,483,000 40,169,000 40,245,000 39,484,000 38,757,000 40,777,000 40,124,000 38,493,000 37,144,000 33,871,000 32,519,000 30,974,000 29,087,000 27,595,000 26,787,000 25,662,000 25,313,000 25,611,000 25,230,000 23,485,000 22,595,000 23,072,000 23,521,000 22,671,000 21,765,000 21,964,000 21,132,000 20,141,000 19,868,000 18,673,000 17,519,000 17,079,000 17,141,000 16,242,000 15,311,000 14,491,000 14,632,000 13,567,000 12,394,000 12,338,000 12,682,000 11,866,000 11,090,000 10,950,000 10,607,000 10,630,000 9,568,000 9,326,000 9,532,000 9,272,000 8,873,000 8,893,000 8,932,000 9,008,000 8,449,000 8,653,000 9,484,000 9,900,000 9,725,000 10,460,000 10,908,000 11,044,000 10,148,000 10,229,000 10,437,000 10,429,000 10,365,000 10,235,000        
        total liabilities
      3,902,720,000 3,820,046,000 3,817,473,000 3,440,313,000 3,319,783,000 3,337,110,000 3,346,849,000 3,344,212,000 3,360,082,000 3,402,163,000 3,403,844,000 3,428,030,000 3,446,907,000 3,526,280,000 3,522,095,000 3,549,699,000 2,550,996,000 2,573,782,000 2,589,630,000 2,687,880,000 2,214,591,000 2,204,216,000 2,158,627,000 2,160,121,000 2,063,584,000 2,105,098,000 2,045,215,000 1,980,704,000 1,879,582,000 1,826,810,000 1,890,500,000 1,831,357,000 1,812,489,000 1,773,962,000 1,706,925,000 1,586,098,000 1,451,019,000 1,403,853,000 1,323,941,000 1,331,926,000 1,292,105,000 1,286,898,000 1,215,672,000 1,274,963,000 1,280,527,000 1,229,142,000 1,130,027,000 1,158,353,000 1,087,623,000 1,112,420,000 1,160,929,000 1,073,029,000 906,911,000 830,925,000 713,141,000 711,032,000 672,206,000 668,266,000 708,762,000 713,049,000 722,995,000 814,146,000 778,738,000 987,427,000 1,007,747,000 1,028,705,000 1,047,727,000 1,076,912,000 1,093,513,000 1,083,230,000 1,075,901,000 942,155,000 944,670,000 915,993,000 820,342,000 763,433,000 714,376,000 779,264,000 519,679,000 448,632,000 405,432,000 570,563,000 
        noncontrolling interests in the operating partnership
      44,858,000 46,888,000 48,784,000 51,193,000 66,330,000 55,930,000 58,253,000 60,276,000 51,877,000 63,352,000 65,565,000 57,419,000 58,508,000 62,393,000 75,991,000 108,220,000 339,557,000 337,417,000 278,649,000 249,414,000 69,573,000 51,407,000 53,845,000 62,088,000 65,108,000 62,385,000 60,414,000 55,819,000 58,446,000 64,512,000 57,705,000 48,759,000 59,416,000 52,735,000 60,541,000 68,581,000 71,916,000 66,128,000 60,180,000 52,472,000 54,446,000 49,823,000 40,590,000 41,430,000 38,807,000 36,275,000 40,688,000 36,446,000 36,036,000 47,990,000 56,740,000 51,450,000 55,622,000 49,732,000 42,521,000 49,789,000 49,835,000 45,145,000 43,871,000 44,731,000 45,086,000 45,394,000 46,057,000                    
        commitments and contingencies
                                                                                        
        equity
                                                                                        
        common shares .01 par value...
      2,280,000 2,280,000 2,279,000 2,278,000 2,260,000 2,252,000 2,250,000 2,249,000 2,249,000 2,248,000 2,247,000 2,246,000 2,246,000 2,245,000 2,244,000 2,239,000 2,033,000 2,018,000 2,004,000 1,974,000 1,937,000 1,937,000 1,936,000 1,936,000 1,936,000 1,916,000 1,881,000 1,871,000 1,863,000 1,859,000 1,823,000 1,809,000 1,802,000 1,802,000 1,799,000 1,782,000 1,771,000 1,747,000 1,709,000 1,674,000 1,661,000 1,639,000 1,532,000 1,471,000 1,422,000 1,393,000 1,365,000 1,344,000 1,332,000 1,318,000 1,274,000 1,227,000 1,224,000 1,221,000 990,000 989,000 988,000 986,000 954,000 930,000 929,000 927,000 923,000 601,000 577,000 576,000 576,000 576,000 576,000 576,000 576,000 575,000 574,000          
        additional paid-in capital
      4,295,941,000 4,293,182,000 4,287,772,000 4,285,570,000 4,195,449,000 4,154,269,000 4,144,972,000 4,142,229,000 4,137,466,000 4,132,621,000 4,128,563,000 4,125,478,000 4,121,824,000 4,114,149,000 4,112,183,000 4,088,392,000 3,037,520,000 2,961,696,000 2,909,730,000 2,805,673,000 2,682,671,000 2,680,468,000 2,675,867,000 2,674,745,000 2,673,440,000 2,610,939,000 2,519,750,000 2,500,751,000 2,472,839,000 2,458,521,000 2,356,759,000 2,323,878,000 2,306,086,000 2,313,350,000 2,381,836,000 2,332,742,000 2,299,527,000 2,231,181,000 2,127,252,000 2,040,861,000 2,011,695,000 1,974,308,000    1,542,703,000 1,492,055,000                974,111,000 812,247,000 801,887,000                  
        accumulated other comprehensive loss
      -270,000 -290,000 -310,000 -330,000 -351,000 -371,000 -391,000 -411,000 -431,000 -451,000 -471,000 -491,000 -511,000 -531,000 -551,000 -570,000 -575,000 -594,000 -613,000 -632,000 -669,000 -689,000 -709,000 -729,000 -749,000 -769,000 -789,000     -363,000 -666,000 -1,023,000 -3,247,000 -4,623,000 -5,302,000 -4,978,000 -8,824,000 -8,378,000 -9,835,000  -8,558,000  -10,360,000  -12,626,000  -18,839,000                                  
        accumulated deficit
      -1,515,815,000 -1,481,494,000 -1,445,520,000 -1,415,662,000 -1,411,850,000 -1,386,056,000 -1,364,723,000 -1,345,239,000 -1,332,081,000 -1,333,148,000 -1,322,576,000 -1,301,030,000 -1,271,905,000 -1,291,916,000 -1,266,804,000 -1,218,498,000 -1,113,025,000 -1,116,596,000 -1,033,519,000 -974,799,000 -947,477,000 -920,964,000 -894,773,000 -876,606,000 -860,985,000 -838,197,000 -823,473,000 -791,915,000 -779,533,000 -773,849,000 -748,499,000 -708,404,000 -691,778,000 -680,919,000 -634,248,000 -627,689,000 -613,734,000 -584,654,000 -576,086,000 -556,385,000 -543,860,000  -487,357,000  -459,335,000  -448,519,000  -429,736,000                         -147,802,000 -126,181,000 -109,492,000 -91,253,000      
        total cubesmart shareholders’ equity
      2,782,136,000 2,813,678,000 2,844,221,000 2,871,856,000 2,785,508,000 2,770,094,000 2,782,108,000 2,798,828,000 2,807,203,000 2,801,270,000 2,807,763,000 2,826,203,000 2,851,654,000 2,823,947,000 2,847,072,000 2,871,563,000 1,925,953,000 1,846,524,000 1,877,602,000 1,832,216,000 1,736,462,000 1,760,752,000 1,782,321,000 1,799,346,000 1,813,642,000 1,773,889,000 1,697,369,000 1,709,678,000 1,695,169,000 1,686,531,000 1,610,362,000 1,616,920,000 1,615,444,000 1,633,210,000 1,746,171,000 1,702,243,000 1,682,293,000 1,643,327,000 1,544,082,000 1,477,803,000 1,459,692,000 1,448,026,000 1,287,166,000 1,185,235,000 1,121,752,000 1,092,276,000 1,032,306,000 1,002,808,000 989,166,000 989,791,000 949,929,000 925,890,000 936,382,000 955,913,000 707,973,000                            
        noncontrolling interests in subsidiaries
      27,944,000 28,708,000 29,802,000 30,819,000 20,794,000 21,322,000 21,678,000 21,704,000 14,063,000 14,364,000 13,833,000 14,178,000 14,101,000 16,179,000 16,383,000 18,597,000 19,548,000 13,509,000 8,597,000 8,632,000 7,944,000 7,965,000 7,969,000 7,990,000 7,996,000 6,097,000 11,191,000 6,771,000 6,853,000 6,907,000 6,967,000 5,983,000 5,889,000 6,208,000 5,562,000 5,587,000 1,459,000 1,526,000 1,703,000 1,752,000 1,757,000 1,592,000 1,538,000 1,495,000  931,000 142,000           41,192,000    44,021,000 44,728,000                    
        total equity
      2,810,080,000 2,842,386,000 2,874,023,000 2,902,675,000 2,806,302,000 2,791,416,000 2,803,786,000 2,820,532,000 2,821,266,000 2,815,634,000 2,821,596,000 2,840,381,000 2,865,755,000 2,840,126,000 2,863,455,000 2,890,160,000 1,945,501,000 1,860,033,000 1,886,199,000 1,840,848,000 1,744,406,000 1,768,717,000 1,790,290,000 1,807,336,000 1,821,638,000 1,779,986,000 1,708,560,000 1,716,449,000 1,702,022,000 1,693,438,000 1,617,329,000 1,622,903,000 1,621,333,000 1,639,418,000 1,751,733,000 1,707,830,000 1,683,752,000 1,644,853,000 1,545,785,000 1,479,555,000 1,461,449,000 1,449,618,000 1,288,704,000 1,186,730,000 1,123,197,000 1,093,207,000 1,032,448,000 1,002,923,000 989,274,000 989,909,000 950,044,000 964,499,000 975,380,000 995,322,000 747,456,000 748,641,000 753,666,000 765,408,000 744,561,000 727,254,000 733,895,000 739,330,000 742,728,000                    
        total liabilities and equity
      6,757,658,000 6,709,320,000 6,740,280,000 6,394,181,000 6,192,415,000 6,184,456,000 6,208,888,000 6,225,020,000 6,233,225,000 6,281,149,000 6,291,005,000 6,325,830,000 6,371,170,000 6,428,799,000 6,461,541,000 6,548,079,000 4,836,054,000 4,771,232,000 4,754,478,000 4,778,142,000 4,028,570,000 4,024,340,000 4,002,762,000 4,029,545,000 3,950,330,000 3,947,469,000 3,814,189,000 3,752,972,000 3,640,050,000 3,584,760,000 3,565,534,000 3,503,019,000 3,493,238,000 3,466,115,000 3,519,199,000 3,362,509,000 3,206,687,000 3,114,834,000 2,929,906,000 2,863,953,000 2,808,000,000 2,786,339,000 2,544,966,000 2,503,123,000 2,442,531,000 2,358,624,000 2,203,163,000 2,197,722,000 2,112,933,000 2,150,319,000 2,167,713,000 2,088,978,000 1,937,913,000 1,875,979,000 1,503,118,000 1,509,462,000 1,475,707,000 1,478,819,000 1,497,194,000 1,485,034,000 1,501,976,000 1,598,870,000 1,567,523,000 1,562,712,000 1,575,053,000                  
        ​
                                                                                        
        assets held for sale
               2,063,000 3,764,000 3,745,000 4,264,000 2,315,000 3,324,000 49,313,000 1,180,000        2,403,000              27,505,000        67,924,000    6,452,000 4,738,000       1,867,000    6,417,000   2,378,000 7,194,000                
        liabilities held for sale
               1,402,000 1,633,000 1,773,000 2,227,000 390,000 475,000 2,502,000 81,000        53,000                                                          
        security deposits
              1,077,000 1,086,000 1,077,000 1,087,000 1,035,000 1,026,000 1,086,000 1,065,000 1,105,000 1,083,000 1,079,000 1,077,000 491,000 482,000 478,000 475,000 470,000 472,000 466,000 474,000 476,000 483,000 486,000 414,000 422,000 415,000 420,000 402,000 397,000 403,000 393,000 403,000 399,000 401,000 394,000 392,000 387,000 376,000 388,000 427,000 437,000 444,000 487,000 501,000 506,000 490,000 476,000 490,000 497,000 489,000 512,000 428,000 458,000 456,000 457,000 472,000 458,000 472,000 491,000 522,000 553,000 548,000 594,000 608,000 632,000 682,000 670,000 683,000 685,000 741,000 609,000 603,000 455,000 364,000 
        unsecured term loans
                                99,861,000 299,799,000 299,699,000 299,598,000 299,497,000 299,295,000 299,195,000 398,890,000 398,608,000 398,466,000 398,325,000 400,000,000 400,000,000 400,000,000 400,000,000 400,000,000 400,000,000 400,000,000 400,000,000 400,000,000 500,000,000 500,000,000 500,000,000  500,000,000 500,000,000 400,000,000  300,000,000 300,000,000                           
        accumulated other comprehensive income
                                 -1,029,000   279,000                                    165,000                
        storage facilities
                                        3,968,754,000 3,861,096,000 3,679,665,000 3,467,032,000 3,323,554,000 3,260,426,000 3,178,202,000 3,117,198,000 2,823,186,000 2,776,835,000 2,660,819,000 2,553,706,000 2,473,889,000 2,536,592,000 2,436,455,000 2,443,022,000 2,432,415,000 2,226,295,000 2,190,998,000 2,107,469,000 1,740,880,000 1,781,331,000 1,737,681,000 1,743,021,000 1,745,625,000 1,739,617,000 1,743,312,000 1,774,542,000 1,784,520,000 1,869,114,000 1,882,654,000 1,888,123,000 1,893,869,000 1,925,616,000 1,929,658,000 1,916,396,000 1,904,179,000 1,784,051,000 1,794,139,000          
        7.75% series a preferred shares .01 par value...
                                        31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000 31,000                             
        investment in real estate venture, at equity
                                            90,825,000 92,371,000 93,918,000 95,709,000 98,321,000 101,013,000  156,310,000                                     
        other liabilities held for sale
                                            725,000        975,000            22,000    157,000   22,000 251,000                
        additional paid in capital
                                                1,781,518,000 1,669,327,000 1,589,994,000   1,457,271,000 1,436,378,000 1,418,463,000 1,357,888,000 1,315,424,000 1,310,755,000 1,309,505,000 1,030,847,000 1,028,640,000 1,027,594,000 1,026,952,000 998,894,000 977,211,000 976,145,000 974,926,000    801,029,000 800,039,000 799,300,000 798,734,000 797,940,000 797,262,000 796,076,000 794,901,000 797,039,000 797,543,000 797,103,000 795,244,000 399,312,000 396,932,000 396,797,000 396,662,000  
        noncontrolling interest in subsidiaries
                                                  1,445,000   115,000 108,000 118,000 115,000 38,609,000 38,998,000 39,409,000 39,483,000 40,178,000 40,665,000  41,862,000 42,567,000 43,364,000                      
        unsecured term loan
                                                       500,000,000    400,000,000   200,000,000 200,000,000 200,000,000    200,000,000 200,000,000 200,000,000 200,000,000 200,000,000 200,000,000 200,000,000 200,000,000 200,000,000 200,000,000 200,000,000          
        unsecured senior notes, net of discounts
                                                         250,000,000                               
        total u-store-it trust shareholders’ equity
                                                             708,463,000 713,001,000 724,216,000 702,699,000 684,687,000 690,531,000 695,309,000 698,000,000                    
        notes receivable
                                                                 256,000 2,532,000 20,112,000                     
        secured term loan
                                                                 200,000,000 200,000,000 200,000,000  46,447,000 57,419,000 57,419,000 57,419,000 57,419,000 47,444,000 47,444,000 47,444,000            
        liabilities related to assets held for sale
                                                                                        
        equity:
                                                                                        
        noncontrolling interests of the company
                                                                     45,649,000 45,833,000                  
        shareholders’ equity:
                                                                                        
        total shareholders’ equity
                                                                     529,636,000 521,473,000 522,928,000 528,614,000 533,389,000 540,472,000 555,619,000 572,379,000 592,482,000 607,756,000 649,810,000 670,078,000 686,601,000 703,004,000 333,911,000 342,659,000 350,714,000   
        loan procurement costs - net of amortization
                                                                       4,453,000 4,781,000 5,284,000 5,648,000 6,108,000 6,390,000 6,673,000           
        liabilities and shareholders’ equity
                                                                                        
        due to related parties
                                                                           110,000 110,000 119,000 119,000          
        minority interests, including unitholders in the operating partnership
                                                                       46,026,000                 
        shareholders’ equity
                                                                                        
        total liabilities and shareholders’ equity
                                                                       1,597,659,000 1,623,022,000 1,657,425,000 1,681,755,000 1,687,831,000 1,698,729,000 1,587,558,000 1,607,435,000 1,624,765,000 1,551,179,000 1,512,329,000 1,481,488,000 1,192,132,000 879,613,000 818,673,000   
        accumulated depreciation
                                                                                        
        other assets - net of amortization
                                                                        8,279,000 10,031,000               
        accounts payable and accrued expenses
                                                                        33,825,000 28,098,000  33,623,000 27,494,000 21,868,000 20,994,000 22,465,000 19,262,000 16,206,000 18,798,000 18,557,000 12,234,000 9,698,000 10,958,000 13,254,000 
        minority interests
                                                                        46,681,000 47,124,000 47,770,000 48,982,000 50,449,000 52,921,000 55,009,000 58,962,000 60,759,000        
        accounts payable, accrued expenses and other
                                                                          28,537,000              
        due from related parties
                                                                             1,358,000 554,000 307,000 353,000        
        loan procurement costs—net of amortization
                                                                              7,132,000 7,541,000 9,298,000 9,714,000   6,932,000 7,210,000 7,624,000  
        storage facilities—net
                                                                               1,577,971,000 1,504,919,000 1,459,183,000  1,141,895,000 847,539,000 791,131,000 729,155,000  
        liabilities
                                                                                        
        loans payable
                                                                               693,694,000 685,423,000 673,828,000 669,282,000 632,660,000 489,372,000 421,400,000 380,496,000 549,510,000 
        due to related party
                                                                               103,000 94,000        
        common shares, .01 par value...
                                                                               573,000 572,000 572,000 570,000 373,000 373,000 373,000 373,000  
        unearned share grant compensation
                                                                                -1,856,000 -1,582,000 -1,557,000 -21,000 -82,000 -145,000 -225,000  
        other assets due from related parties
                                                                                 678,000 355,000      
        accounts payable and accrued expenses due to related party
                                                                                 83,000 74,000      
        rents received in advance
                                                                                 9,981,000 8,857,000 8,436,000 6,917,000 6,319,000 5,835,000 4,573,000 
        minority interest
                                                                                 62,295,000 64,108,000 14,799,000 17,275,000 19,327,000 11,062,000  
        storage facilities — net
                                                                                  1,246,295,000     510,398,000 
        loan procurement costs — net of amortization
                                                                                  10,437,000      
        capital lease obligations
                                                                                  56,000 72,000 90,000 114,000 156,000 182,000 
        loan procurement costs—net
                                                                                   8,993,000     
        conditionally redeemable operating partnership units
                                                                                   64,158,000     
        retained deficit
                                                                                   -65,753,000 -54,564,000 -46,311,000 -37,430,000  
        cash
                                                                                    5,808,000 8,251,000 28,485,000 4,400,000 
        liabilities and shareholders’/owners’ equity
                                                                                        
        accrued management fees—related parties
                                                                                        
        shareholders’/owners’ equity
                                                                                        
        owners’ equity
                                                                                        
        total shareholders’/owners’ equity
                                                                                      359,380,000  
        total liabilities and shareholders’/owners’ equity
                                                                                      775,874,000  
        loan procurement costs — net of amortization of 5,385 at september 30 and 3,633 at december 31
                                                                                       8,558,000 
        total
                                                                                       536,366,000 
        liabilities and accumulated equity
                                                                                        
        accrued management fees — related parties
                                                                                       380,000 
        notes payable — related party
                                                                                       2,300,000 
        accumulated equity
                                                                                       -34,197,000 
        revenues:
                                                                                        
        rental income
                                                                                       21,277,000 
        other property related income
                                                                                       1,004,000 
        total revenues
                                                                                       22,281,000 
        operating expenses:
                                                                                        
        property operating expenses
                                                                                       7,879,000 
        depreciation
                                                                                       5,322,000 
        management fees to related party
                                                                                       1,185,000 
        total operating expenses
                                                                                       14,386,000 
        operating income
                                                                                       7,895,000 
        other income:
                                                                                        
        interest income
                                                                                       67,000 
        interest expense
                                                                                       -7,298,000 
        loan procurement amortization expense
                                                                                       -2,935,000 
        total other income
                                                                                       -10,166,000 
        income from continuing operations
                                                                                       -2,271,000 
        discountinued operations
                                                                                        
        income from operations
                                                                                        
        gain on sale of storage facilities
                                                                                        
        income from discontinued operations
                                                                                        
        net income
                                                                                       -2,271,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-09-30 2005-10-21 2005-09-30 2005-06-30 2005-03-31 2004-10-21 
                                                                                         
          operating activities
                                                                                         
          net income
        82,416,000 82,432,000 88,745,000 101,891,000 100,950,000 94,186,000 94,858,000 113,137,000 103,073,000 98,283,000 97,942,000 82,172,000 113,440,000 58,594,000 38,266,000 46,563,000 90,569,000 50,366,000 43,315,000 42,958,000 47,404,000 38,932,000 38,317,000 42,510,000 42,597,000 49,878,000 35,786,000 48,636,000 43,302,000 38,751,000 34,799,000 39,858,000 37,709,000 32,838,000 25,206,000 27,047,000 25,091,000 20,383,000 15,855,000 37,741,000 18,620,000 13,873,000 8,522,000 5,542,000 8,591,000 7,993,000 4,576,000 23,253,000 16,601,000 2,568,000 -428,000 1,480,000 2,051,000 3,355,000 -3,258,000 -7,545,000 7,928,000 1,588,000 476,000 2,677,000 -1,115,000 -4,389,000 -3,192,000 -2,463,000 7,503,000 -3,086,000 -2,286,000 2,490,000 4,021,000 265,000 -3,984,000 -5,877,000 -4,130,000 288,000 -3,358,000 -1,116,000 -2,709,000 1,665,000 2,204,000 1,617,000 -29,488,000 
          adjustments to reconcile net income to cash from operating activities:
                                                                                         
          depreciation and amortization, including amortization of loan procurement costs
        67,946,000 67,709,000 60,377,000 53,777,000 52,196,000                                                                             
          non-cash portion of interest expense related to finance leases
        -24,000 -13,000 -19,000 -9,000 -8,000 -14,000 -15,000 -6,000 -7,000 -13,000 -18,000 -6,000 -7,000 -12,000 -18,000 -6,000 9,000 88,000 111,000                                                               
          equity in earnings of real estate ventures
        -648,000 -547,000 -379,000 -811,000 -418,000 -425,000 -845,000 -1,603,000 -1,141,000 -790,000 -2,551,000 -1,345,000 -46,558,000 -680,000 -294,000                                                                   
          cash distributed from real estate ventures
        1,062,000 987,000 1,023,000 1,208,000 1,128,000 1,103,000 1,222,000 -5,354,000 2,959,000 3,000,000 4,862,000 3,112,000 53,336,000 3,183,000 3,025,000 51,468,000 8,270,000 1,897,000 4,958,000 1,680,000 1,417,000 1,334,000 1,815,000 1,583,000 1,646,000 1,795,000 2,072,000 2,287,000 2,173,000 1,989,000 2,257,000 9,671,000 2,090,000 1,933,000 2,090,000 2,143,000 2,254,000 1,925,000 1,791,000                                           
          equity compensation expense
        2,889,000 2,504,000 3,208,000 2,897,000 2,903,000 2,858,000 2,829,000 2,559,000 2,545,000 2,449,000 2,536,000 2,277,000 2,299,000 2,312,000 2,193,000 2,021,000 2,024,000 2,001,000 2,042,000 1,766,000 1,771,000 1,732,000 1,871,000 1,704,000 1,676,000 1,695,000 1,619,000 1,376,000 1,382,000 1,222,000 1,592,000 1,407,000 1,406,000 1,418,000 1,355,000 1,229,000 1,189,000 1,202,000 -408,000 905,000 795,000 1,000,000 -545,000 1,320,000   363,000 1,566,000 1,484,000 1,538,000 1,029,000 1,481,000 1,431,000 1,155,000 483,000 966,000 756,000 900,000 582,000 955,000 952,000 695,000 1,039,000 807,000 875,000 856,000 858,000 177,000 876,000 813,000 856,000 544,000 542,000 526,000 228,000 634,000 1,635,000 196,000 198,000 215,000  
          accretion of fair market value adjustment of debt
        83,000 10,000 12,000 -1,000 -5,000 -117,000 -172,000 -172,000 -183,000 -271,000 -260,000 -269,000 -279,000 -282,000 -269,000 -407,000 -510,000 -513,000 -607,000 271,000 -176,000 -178,000 -176,000 -177,000 -181,000 -181,000 -179,000 -182,000 -184,000 -186,000 -183,000 -186,000 -148,000 -96,000 -129,000 -225,000 -409,000 -268,000 -236,000 -256,000 -370,000 -408,000 -395,000    -351,000                                   
          changes in other operating accounts:
                                                                                         
          other assets
        4,732,000 -15,723,000 4,065,000 5,263,000 -6,662,000 -6,126,000 56,000 -86,000 8,836,000 -15,571,000 -3,317,000 -749,000 4,740,000 -4,578,000 4,085,000 -2,213,000 4,901,000 -10,217,000 -1,718,000 -2,710,000 -7,288,000 -2,419,000 2,743,000 1,516,000 -5,706,000 824,000 -3,212,000 828,000 -1,583,000 -2,830,000 -1,352,000 373,000 -4,375,000 -3,412,000 -1,431,000 2,903,000 -3,203,000 -4,438,000 808,000 758,000 619,000 -4,032,000 136,000    2,147,000    892,000  2,549,000          668,000    1,475,000 -831,000 826,000 -1,328,000 2,758,000    348,000 -1,532,000 1,745,000 -3,238,000 -1,517,000 -177,000 3,450,000 
          accounts payable and accrued expenses
        10,266,000 19,244,000 -12,405,000 2,119,000 -3,898,000 26,039,000 -235,000 -18,312,000 4,311,000 25,009,000 -10,912,000 -5,587,000 7,380,000 16,691,000 1,911,000 -4,526,000 -42,000 21,114,000 -1,675,000 -7,932,000 -2,086,000 27,683,000 -3,743,000 -13,294,000 -73,000 17,603,000 1,806,000 -8,168,000 505,000 15,874,000 -5,558,000 -7,742,000 5,815,000 10,178,000 2,595,000 -9,699,000 11,670,000 878,000 5,013,000 -6,524,000 2,780,000 6,705,000 -3,399,000 168,000   -6,800,000 3,013,000 452,000   -495,000    -2,196,000 4,218,000   -3,461,000            3,162,000    3,034,000 -793,000 5,211,000 2,097,000 -1,094,000 -5,795,000 
          other liabilities
        -501,000 876,000 1,694,000 -1,668,000 -790,000 1,308,000 705,000 -1,752,000 -85,000 770,000 717,000 -1,968,000 634,000 1,519,000 1,347,000 -847,000 1,379,000 1,502,000 1,889,000 -239,000 817,000 996,000 340,000 -453,000 361,000 1,080,000 833,000 -898,000 -651,000 786,000 1,105,000 -249,000 -207,000 701,000 909,000 -122,000 -89,000 999,000 661,000 63,000 -100,000 802,000 715,000 -366,000 -368,000 666,000 647,000 -172,000 78,000 368,000 821,000 99,000 -746,000 27,000 774,000  -22,000 -81,000 310,000 -70,000 -158,000 -106,000 561,000    164,000  -224,000 -109,000 858,000 -74,000 -222,000 70,000 572,000 -326,000 -273,000 -24,000 51,000 204,000  
          net cash from operating activities
        168,221,000 157,479,000 146,321,000 164,666,000 145,396,000 170,862,000 150,150,000 146,001,000 168,364,000 161,265,000 135,506,000 144,970,000 162,192,000 153,569,000 130,735,000 106,245,000 125,582,000 119,176,000 98,182,000 83,202,000 79,316,000 107,566,000 80,949,000 71,916,000 82,588,000 101,806,000 75,458,000 69,773,000 78,880,000 89,550,000 66,132,000 69,158,000 76,771,000 79,566,000 67,943,000 62,105,000 77,444,000 62,044,000 61,933,000 53,214,000 61,803,000 57,263,000 43,425,000 47,100,000 47,353,000 40,998,000 30,581,000 38,971,000 38,580,000 38,850,000 26,461,000 21,263,000 38,570,000 37,842,000 20,753,000 19,952,000 26,208,000 22,920,000 15,247,000 20,570,000 23,509,000 16,554,000 10,884,000 15,232,000 19,820,000 15,873,000 11,289,000 13,807,000 24,315,000 17,155,000 11,735,000 17,337,000 20,981,000 11,612,000 12,944,000 17,793,000 11,940,000 15,442,000 12,249,000 9,219,000 -14,025,000 
          capital expenditures
          free cash flows
        168,221,000 157,479,000 146,321,000 164,666,000 145,396,000 170,862,000 150,150,000 146,001,000 168,364,000 161,265,000 135,506,000 144,970,000 162,192,000 153,569,000 130,735,000 106,245,000 125,582,000 119,176,000 98,182,000 83,202,000 79,316,000 107,566,000 80,949,000 71,916,000 82,588,000 101,806,000 75,458,000 69,773,000 78,880,000 89,550,000 66,132,000 69,158,000 76,771,000 79,566,000 67,943,000 62,105,000 77,444,000 62,044,000 61,933,000 53,214,000 61,803,000 57,263,000 43,425,000 47,100,000 47,353,000 40,998,000 30,581,000 38,971,000 38,580,000 38,850,000 26,461,000 21,263,000 38,570,000 37,842,000 20,753,000 19,952,000 26,208,000 22,920,000 15,247,000 20,570,000 23,509,000 16,554,000 10,884,000 15,232,000 19,820,000 15,873,000 11,289,000 13,807,000 24,315,000 17,155,000 11,735,000 17,337,000 20,981,000 11,612,000 12,944,000 17,793,000 11,940,000 15,442,000 12,249,000 9,219,000 -14,025,000 
          investing activities
                                                                                         
          acquisitions of storage properties
           -21,805,000 -450,000 -20,147,000     -20,461,000 -28,782,000 -39,761,000 -86,092,000 -33,939,000   -335,020,000 -10,154,000 -63,724,000 -9,090,000 -54,499,000 -18,082,000 -20,320,000 -25,097,000 -131,111,000 -58,470,000 -20,895,000 -4,034,000 -55,754,000 -466,000 -12,809,000 -600,000                                               
          additions and improvements to storage properties
        -14,205,000 -14,776,000 -9,370,000 -10,438,000 -12,069,000 -11,412,000 -9,656,000 -8,211,000 -6,368,000 -14,124,000 -11,150,000 -13,740,000 -9,881,000 -9,857,000 -7,755,000 -6,680,000 -9,422,000 -10,612,000 -7,894,000 -7,889,000 -11,196,000 -18,849,000 -11,923,000 -9,049,000 -12,036,000 -10,331,000 -6,153,000 -8,452,000 -6,515,000 -7,265,000 -5,394,000 -5,617,000 -7,529,000 -8,950,000 -6,866,000                                               
          development costs
        -7,259,000 -10,247,000 -8,017,000 -6,470,000 -6,961,000 -10,427,000 -6,101,000 -13,293,000 -6,510,000 -9,651,000 -18,067,000 -6,913,000 -4,134,000 -5,526,000 -7,785,000 -9,104,000 -27,729,000 -22,122,000 -10,932,000 -21,123,000 -15,983,000 -8,471,000 -9,709,000 -8,575,000 -22,567,000 -21,936,000 -49,748,000 -16,287,000 -16,514,000 -13,538,000 -39,663,000 -14,928,000 -28,708,000 -6,657,000 -14,366,000 -9,577,000 -39,640,000 -66,223,000 -28,273,000 -22,916,000 -21,373,000 -27,871,000 -9,155,000    -7,488,000                                   
          cash paid for partner's interest in real estate venture, net of cash acquired
        -451,141,000                                                                               
          investments in real estate ventures
           -985,000 -6,000 -5,000 -305,000                                                                           
          net cash from investing activities
        -21,558,000 -24,061,000 -467,334,000 -101,098,000 -18,298,000 -20,343,000 -34,220,000 -38,991,000 -9,687,000 -20,780,000 -24,360,000 -17,546,000 18,854,000 -40,987,000 -9,088,000 -1,722,719,000 -41,979,000 -67,438,000 -20,532,000 -350,994,000 -35,922,000 -89,741,000 -34,784,000 -70,390,000 -54,431,000 -171,810,000 -79,033,000 -137,236,000 -84,333,000 -43,536,000 -57,154,000 -66,759,000 -34,702,000 -26,511,000 -19,852,000 -72,338,000 -125,066,000 -150,183,000 -196,884,000 -136,705,000 -102,213,000 -81,762,000 -53,928,000 -303,726,000 -52,055,000 -78,479,000 -88,439,000 -152,651,000 -26,227,000 -106,419,000 2,373,000  -194,874,000 -24,086,000 -52,795,000 -387,467,000 1,825,000 -48,288,000 -8,170,000 -20,711,000 -36,404,000 -5,496,000 17,828,000 2,400,000 96,192,000 636,000 -376,000 12,588,000 23,410,000 5,180,000 -14,001,000 -8,888,000 -128,607,000 7,656,000 -23,737,000 -75,421,000 -108,374,000 -161,531,000 -66,703,000 -56,086,000 -225,320,000 
          financing activities
                                                                                         
          proceeds from:
                                                                                         
          unsecured senior notes
                               348,680,000 347,746,000                                                   
          revolving credit facility
        144,511,000 167,452,000 577,589,000 84,533,000 201,919,000 196,667,000 213,920,000 180,364,000 159,149,000 234,861,000 220,073,000 133,310,000 205,310,000 143,798,000 151,532,000 238,913,000 244,902,000 154,645,000 268,111,000 155,311,000 146,557,000 122,090,000 5,127,000 3,302,000 234,610,000 342,381,000 279,020,000 227,075,000 201,435,000 94,325,000 156,700,000 178,500,000 144,600,000 158,300,000 147,000,000 128,200,000 174,900,000 353,800,000 301,300,000 59,520,000 293,100,000 216,800,000 161,900,000 134,500,000 130,800,000 249,700,000 197,500,000 285,600,000 121,400,000 168,600,000 60,600,000 59,700,000 97,000,000 161,200,000 85,100,000 138,000,000 31,500,000 73,200,000 14,000,000     3,000,000 6,500,000 23,900,000 -3,300,000 6,700,000 30,000,000 27,500,000 92,500,000 15,000,000 21,500,000 82,500,000      
          principal payments on:
                                                                                         
          mortgage loans and notes payable
        -295,000 -289,000 -301,000 -252,000 -232,000 -31,401,000 -456,000 -453,000 -440,000 -31,060,000 -638,000 -620,000 -602,000 -593,000 -611,000 -41,472,000 -574,000 -568,000 -44,649,000 -44,195,000 -636,000 -629,000 -633,000 -625,000 -9,642,000 -684,000 -701,000 -679,000 -658,000 -648,000 -7,831,000 -644,000 -622,000 -589,000 -6,811,000 -612,000 -22,989,000 -4,103,000 -9,556,000 -7,976,000 -21,478,000 -54,168,000 -1,283,000    -1,309,000         3,537,000     43,369,000 21,346,000                 
          loan procurement costs
               -30,000 -39,000 -3,749,000            -2,919,000 -78,000 -392,000 -2,634,000          -2,150,000 -2,264,000 -19,000    -57,000            17,000                 -261,000 -1,994,000 -2,631,000 -57,000 -9,000 129,000 
          issuance of common shares
        -111,000 -122,000 -167,000 85,550,000 32,768,000 -39,000 -9,000 -51,000                                                                          
          payments upon net settlement of equity compensation
        -20,000 -183,000 -3,047,000                                                                               
          exercise of stock options
          5,222,000 4,518,000 201,000 1,801,000 915,000 364,000 1,226,000 2,618,000 4,075,000 1,172,000 335,000 491,000   20,000 1,655,000 962,000 1,049,000 52,000 3,781,000 2,000 1,499,000 771,000 64,000 30,000 710,000 374,000 6,312,000 5,887,000 4,093,000 4,037,000 921,000 8,438,000 11,536,000 1,299,000 407,000 560,000 1,223,000 1,209,000 493,000 785,000 268,000 389,000 204,000 768,000 61,000 60,000 13,000 1,000 180,000                   
          contributions from noncontrolling interests in subsidiaries
           63,000 309,000 303,000       6,300,000          8,000 74,000 105,000 738,000 341,000 172,000 135,000 410,000 352,000 51,000   178,000 47,000 47,000 33,000 515,000         -2,000 -4,000 -5,000 12,000 -5,000 4,000 -3,000 19,000                   
          distributions paid to noncontrolling interests in subsidiaries
        -157,000 -165,000 -112,000 -109,000 -130,000 -54,000 -125,000 -66,000 -89,000 -54,000 -107,000 -56,000 -5,237,000 -61,000 -2,033,000 -108,000 -31,000 -38,000 -69,000 -44,000 -60,000 -42,000 -59,000 -46,000 -68,000 -8,000 -66,000 -35,000 -54,000                                                     
          distributions paid to common shareholders
        -119,103,000 -119,056,000 -119,048,000 -115,868,000 -115,380,000 -115,268,000 -115,253,000 -110,616,000 -110,586,000 -110,520,000 -110,495,000 -96,868,000 -96,819,000 -96,814,000 -96,605,000 -69,317,000 -68,800,000 -68,354,000 -67,368,000 -64,093,000 -64,086,000 -64,038,000 -64,036,000 -62,048,000 -61,432,000 -60,374,000 -60,005,000 -55,971,000 -55,842,000 -54,769,000 -54,746,000 -48,899,000 -48,710,000 -48,707,000 -48,690,000 -37,814,000 -37,482,000 -37,254,000 -36,730,000 -27,387,000 -26,819,000 -26,613,000 -26,274,000    -18,157,000                                   
          distributions paid to noncontrolling interests in operating partnership
        -574,000 -594,000 -621,000 -628,000 -632,000 -657,000 -663,000 -667,000 -695,000 -695,000 -699,000 -628,000 -628,000 -628,000 -818,000 -2,383,000 -2,477,000 -2,504,000 -933,000 -623,000 -618,000 -649,000 -650,000 -596,000 -597,000 -603,000 -623,000 -614,000 -602,000 -614,000 -563,000 -507,000 -668,000 -548,000 -549,000 -467,000 -467,000 -453,000 -454,000 -354,000 -362,000 -361,000 -361,000    -296,000                                   
          net cash from financing activities
        -46,238,000 -134,840,000 259,104,000 -31,260,000 -89,013,000 -150,862,000 -116,534,000 -108,693,000 -159,922,000 -138,122,000 -111,289,000 -126,703,000 -180,946,000 -114,941,000 -124,502,000 1,569,722,000 -29,760,000 -51,503,000 -77,887,000 267,303,000 -43,068,000 -49,912,000 -66,127,000 44,067,000 -30,692,000 78,846,000 3,634,000 67,466,000 2,408,000 -45,472,000 -9,154,000 -3,361,000 -43,916,000 -48,059,000 -47,983,000 -74,173,000 131,578,000 88,808,000 74,836,000 143,342,000 40,261,000 24,649,000 10,619,000 228,263,000 25,177,000 45,035,000 57,917,000 113,916,000 -13,434,000 68,965,000 -30,704,000 -19,294,000 21,215,000 116,575,000 30,438,000 364,093,000 -17,387,000 23,124,000 -8,879,000  4,221,000 -20,705,000 -89,956,000 24,169,000 -56,702,000 -16,429,000 -13,080,000 -25,191,000 -45,836,000 -27,309,000 3,374,000 -9,835,000 110,086,000 -21,474,000 -3,274,000 60,049,000 282,718,000 155,095,000 52,011,000 26,633,000 268,866,000 
          change in cash, cash equivalents and restricted cash
        100,425,000 -1,422,000 -61,909,000 32,308,000 38,085,000 -343,000 -604,000 -1,683,000 -1,245,000 2,363,000 -143,000 721,000 100,000 -2,359,000 -2,855,000 -46,752,000 53,843,000 235,000 -237,000 -489,000 326,000 -32,087,000 -19,962,000 45,593,000 -2,535,000                                                         
          cash, cash equivalents and restricted cash at beginning of period
        77,663,000 8,217,000 8,925,000 13,318,000 6,229,000  58,441,000                                                          
          cash, cash equivalents and restricted cash at end of period
        100,425,000 -1,422,000 15,754,000 32,308,000 38,085,000 -343,000 7,613,000 -1,683,000 -1,245,000 2,363,000 8,782,000 721,000 100,000 -2,359,000 10,463,000 -46,752,000 53,843,000 235,000 5,992,000  326,000 -32,087,000 38,479,000  -2,535,000                                                         
          supplemental cash flow and noncash information
                                                                                         
          cash paid for interest, net of interest capitalized
        36,578,000 21,394,000 32,319,000 14,656,000 31,049,000 15,353,000 31,551,000 15,199,000 31,942,000 16,155,000 32,202,000 17,121,000 34,486,000 15,961,000 24,725,000 15,538,000 24,786,000 15,290,000 23,534,000 17,855,000 25,211,000 14,074,000 23,652,000 16,107,000 20,956,000 16,302,000 15,918,000 18,035,000 15,693,000 17,803,000 15,298,000 16,933,000 15,064,000 15,532,000 15,878,000 14,975,000 11,231,000 16,123,000 10,756,000 10,649,000 11,674,000 11,778,000 12,115,000 11,784,000 13,036,000 12,385,000 12,819,000 6,980,000 13,628,000 8,163,000 14,359,000 7,853,000 7,695,000 9,443,000 8,587,000 8,466,000 8,429,000 8,212,000 8,158,000 8,737,000 9,669,000 9,695,000 10,245,000 9,498,000 11,566,000 11,365,000 11,335,000 12,702,000 12,358,000 13,319,000 13,912,000 14,670,000 13,250,000 13,247,000 12,785,000       
          supplemental disclosure of noncash activities:
                                                                                         
          derivative valuation adjustment
        20,000 20,000 20,000 21,000 20,000 20,000 20,000 21,000 20,000 20,000 20,000 21,000 20,000 20,000 20,000 21,000 20,000 20,000 20,000 21,000 20,000 20,000 20,000 20,000 20,000 20,000 242,000 -1,039,000 127,000 279,000 370,000 307,000 362,000 836,000 1,413,000 1,393,000 687,000 -328,000 2,648,000 -245,000 1,215,000 -764,000 -80,000 2,598,000 -646,000 592,000 1,649,000 -1,118,000 7,149,000 1,222,000 1,345,000 -2,708,000 -6,596,000 688,000 -3,205,000 -10,050,000       1,238,000 2,000,000 1,821,000 1,094,000               
          gain on involuntary conversion
                                                                                         
          acquisition of controlling interest in consolidated joint ventures, net of cash acquired
                                                                                         
          funding of note receivable
                                                                                         
          proceeds from sales of real estate
                                                                                         
          proceeds from involuntary conversion
                                                                                         
          cash paid upon vesting of restricted shares
           -16,000 -29,000 -161,000 -838,000 -13,000 -33,000 -136,000 -635,000 -19,000 -42,000 -304,000 -1,038,000 -33,000 -41,000 -74,000 -728,000 -21,000 -15,000 -19,000 -631,000 -21,000 -22,000 -25,000 -353,000 -12,000 -25,000 -13,000 -1,411,000 -12,000 -18,000 -15,000 -2,001,000                                               
          mortgage loan assumptions
                                   7,166,000                                               
          accretion of put liability
                   611,000 611,000 1,222,000 2,444,000 2,444,000 2,066,000 2,823,000 3,201,000 2,924,000 896,000 896,000 1,224,000 -637,000   3,870,000                                                      
          proceeds from sale of real estate
                  43,193,000 6,678,000                                                                 
          depreciation and amortization
              51,747,000 51,596,000 51,015,000 51,399,000 51,369,000 70,445,000 80,543,000 80,005,000 83,514,000 73,338,000 56,883,000 55,151,000 54,845,000 38,172,000 38,837,000 40,646,000 41,592,000 41,800,000 44,066,000 41,434,000 39,066,000 38,677,000 35,817,000 35,624,000 35,545,000 35,434,000 36,548,000 37,512,000 38,825,000 39,940,000 42,482,000 42,059,000 39,961,000 37,646,000 39,281,000 38,745,000 38,441,000 37,129,000 32,188,000 31,030,000 28,656,000 27,261,000 29,710,000 29,738,000 30,365,000 32,661,000 30,615,000 27,811,000 27,486,000 22,311,000 16,960,000 17,223,000 17,208,000 17,814,000 17,156,000 17,963,000 17,917,000 18,219,000 19,186,000 19,284,000 19,219,000 18,735,000 20,270,000 20,661,000 20,466,000 20,590,000 17,316,000 17,100,000 17,212,000 17,068,000 12,941,000 11,438,000 9,129,000 8,394,000 -14,422,000 
          loss on early extinguishment of debt
                                                                                         
          gains from sales of real estate
                       -3,883,000                                                                  
          acquisition of laaco, ltd., net of cash acquired
                                                                                         
          investment in real estate ventures
               -5,000 -6,000 -5,000 -5,000 -5,000 -6,000 -5,000 -5,000 -5,000 -16,507,000 -5,085,000 -6,664,000 -1,108,000 -6,000 -31,000 -5,877,000 -3,706,000 -3,392,000 -3,059,000 -107,000 -62,000                                                      
          debt prepayment costs
                                                                                         
          acquisition of noncontrolling interest in subsidiary
                               -369,000 -2,618,000 -27,618,000 -5,172,000     -1,500,000                                                 
          discount on issuance of unsecured senior notes
                               1,320,000 2,254,000                                                      
          proceeds from issuance of common shares
                 -55,000 -91,000 -13,000 5,054,000 -41,000 -123,000 765,676,000 57,845,000 42,429,000 99,688,000 120,959,000 -44,000 -70,000 -118,000 -29,000 61,232,000 110,521,000 24,580,000 23,494,000 12,913,000 95,466,000 -43,000 29,861,000 -41,000 -105,000 -72,000 -29,000 47,548,000 25,712,000 62,891,000 97,399,000 80,185,000 27,036,000 29,442,000 180,041,000 109,842,000 79,960,000 46,163,000 47,790,000 32,112,000 18,874,000 1,514,000 42,936,000    202,567,000    27,135,000 20,067,000    161,321,000                 
          right-of-use assets obtained in exchange for lease liabilities
                                                                                         
          issuance of op units
                           177,933,000        1,460,000 4,782,000                                                 
          cash paid for partner's interest in real estate venture, net of cash, cash equivalents and restricted cash acquired
                                                                                       
          unsecured term loans
                               -200,000,000                         200,000,000                         
          settlement of hedge transactions
                               -807,000                                                       
          proceeds held in escrow from real estate venture's sale of real estate
                                                                                       
          noncash consideration for acquisition of partner's interest in real estate venture
                                                                                       
          noncash drawdown on revolving credit facility
                                                                                       
          repayment of unsecured term loan through noncash drawdown on revolving credit facility
                                                                                       
          equity in (earnings) losses of real estate ventures
                        -816,000 -316,000 -20,000     -182,000 -152,000                                                         
          gains from sale of real estate
                                                                                         
          cash, cash equivalents and restricted cash at beginning of year
                                                                                         
          cash, cash equivalents and restricted cash at end of year
                                                                                         
          equity in losses (earnings) of real estate ventures
                            37,000                                                             
          issuance of note receivable
                                                                                         
          equity in losses of real estate ventures
                              5,000    -261,000 80,000 292,000 309,000 184,000 81,000 280,000 253,000 772,000 845,000 581,000 724,000 512,000 212,000 -139,000 100,000 238,000                                       
          liability for acquisition of storage property
                                                                                       
          contribution of storage property to real estate venture
                                                                                         
          change in cash, cash equivalents, and restricted cash
                                  59,000 3,000 -3,045,000 542,000 -176,000                                                   
          cash, cash equivalents, and restricted cash at beginning of period
                                  6,482,000  9,158,000                                                   
          cash, cash equivalents, and restricted cash at end of period
                                  6,541,000  -3,045,000 542,000 8,982,000                                                   
          accretion of liability
                                  4,070,000   6,806,000 7,266,000 9,527,000 9,527,000 8,034,000 8,034,000 8,033,000 19,219,000 -3,712,000 7,886,000 5,508,000 3,994,000 3,808,000 3,619,000 3,620,000 1,786,000                                     
          redemption of preferred shares
                                                                                         
          distributions paid to preferred shareholders
                                           -2,039,000 -1,502,000 -1,502,000 -1,502,000 -1,502,000 -1,502,000 -1,502,000 -1,502,000    -1,502,000                                   
          cash, cash equivalents, and restricted cash at beginning of year
                                                                                         
          cash, cash equivalents, and restricted cash at end of year
                                                                                         
          restricted cash - acquisition of storage properties
                                                                                         
          preferred share redemption
                                                                                         
          investment in real estate ventures, at equity
                                     -3,827,000 -10,320,000 -110,000 -68,000 -7,000 -116,000 -4,265,000 -325,000 -2,088,000 -5,498,000                                           
          liability for acquisition of noncontrolling interest in subsidiary
                                                                                         
          restricted cash
                                       182,000 -257,000 174,000 -159,000 187,000 132,000 505,000 -233,000 236,000 317,000 478,000 -288,000   379,000 -26,000 49,000 -544,000 405,000 657,000 238,000 13,000 3,192,000 102,000   -183,000 765,000                       
          fundings of notes receivable
                                                                                       
          proceeds from notes receivable
                                                       5,192,000                               
          change in restricted cash
                                       -21,000 -21,000 -21,000 6,000 -28,000 833,000 -25,000 162,000 -30,000 162,000 -32,000 -31,000 245,000 -21,000 -2,000 306,000 152,000 856,000                                 
          change in cash and cash equivalents
                                       -962,000 -1,847,000 4,996,000 108,000 -84,406,000 83,956,000 669,000 -60,115,000 59,851,000 -149,000 150,000 116,000  20,475,000 7,554,000 59,000                                   
          cash and cash equivalents at beginning of year
                                                 2,901,000                                       
          cash and cash equivalents at end of year
                                                 150,000 3,017,000                                       
          restricted cash - disposition of real estate
                                                                                         
          foreign currency translation adjustment
                                               35,000 -215,000 268,000 -337,000 -120,000 -483,000 354,000 74,000 -10,000 297,000 25,000 -256,000 21,000 132,000 -105,000 124,000 -1,000 -76,000 -24,000 252,000 -214,000 195,000 -52,000 -197,000 -19,000 -197,000 501,000 268,000               
          cash and cash equivalents at beginning of period
                                        2,973,000  62,869,000      3,176,000  4,495,000  9,069,000  5,891,000  102,768,000  3,744,000  4,517,000  19,716,000       
          cash and cash equivalents at end of period
                                        -1,847,000 4,996,000 3,081,000  83,956,000 669,000 2,754,000      20,475,000 7,554,000 3,235,000  -1,081,000 1,396,000 2,625,000  -135,089,000 130,331,000 7,465,000  10,646,000 -2,244,000 4,089,000  -8,674,000 -9,647,000 41,524,000  59,310,000 80,000 1,577,000  1,889,000 -4,974,000 5,625,000  2,460,000 -2,206,000 5,649,000       
          acquisitions of storage facilities
                                            -78,377,000 -77,120,000 -158,457,000 -113,874,000 -76,225,000 -44,280,000 -41,347,000  -44,143,000 -135,103,000 -76,619,000  -39,300,000 -86,886,000 -6,857,000                               
          additions and improvements to storage facilities
                                            -9,811,000 -6,652,000 -6,609,000 -6,359,000 -6,462,000 -6,926,000 -4,948,000    -5,112,000                               -162,515,000 -61,618,000 -54,966,000  
          restricted cash - acquisition of storage facilities
                                            -22,019,000                                           
          mortgage loan assumption - acquisitions of storage facilities
                                                                                        
          loan procurement amortization expense - early repayment of debt
                                                               6,082,000                         
          cash contributed to real estate ventures
                                                                                         
          distributions to noncontrolling interests in subsidiaries
                                                                                         
          gain from sale of real estate
                                                                                         
          cash contributed to real estate venture
                                                      -1,050,000                                   
          cash distributed from real estate venture
                                                1,685,000 1,447,000 1,553,000 1,515,000 1,432,000 52,425,000 1,524,000                                   
          mortgage loan assumption - acquistions of storage facilities
                                                 2,695,000                                       
          gain from remeasurement of investment in real estate venture
                                                                                         
          cash paid for remaining interest in real estate venture
                                                                                         
          investment in real estate venture, at equity
                                                                                         
          proceeds from sales of facilities
                                                       88,180,000                                  
          cash paid for acquisition of noncontrolling interest
                                                                                         
          distributions paid to noncontrolling interest in subsidiaries
                                                                                         
          consolidation of real estate venture
                                                                                        
          equity in losses of real estate venture
                                                    1,860,000 1,729,000 1,369,000                                  
          mortgage loan assumption - acquisition of storage facilities
                                                    27,467,000                                   
          gain on disposition of discontinued operations
                                                                                         
          proceeds from sales of properties
                                                         10,993,000 25,197,000 4,771,000 22,518,000 144,000         7,030,000 50,047,000 8,328,000 2,852,000 13,661,000 27,033,000 11,747,000 4,426,000           
          gain from disposition of discontinued operations
                                                                                         
          proceeds from issuance of preferred shares
                                                                                         
          equity in loss of real estate venture
                                                                                         
          settlement of hedge transaction
                                                                                         
          cash distributions from real estate venture
                                                            276,000 267,000 366,000                           
          unsecured senior notes, net of discounts
                                                                                         
          mortgage loan assumption - acquisition of storage facility
                                                                                         
          acquisitions, additions and improvements to storage facilities
                                                            -118,799,000 -48,658,000 -53,307,000  -25,599,000 -48,336,000 -8,043,000  -35,093,000               -38,716,000      
          cash paid for remaining interest in real estate ventures
                                                                                         
          decrease in restricted cash
                                                                                         
          net cash from by investing activities
                                                                                         
          acquisition of noncontrolling interest
                                                                                         
          increase in cash and cash equivalents
                                                               -3,422,000        41,801,000       1,108,000           
          acquisition related contingent consideration
                                                                   -72,000                     
          gain on remeasurement of investment in real estate venture
                                                                                         
          loan procurement amortization expense- early repayment of debt
                                                                                         
          decrease (increase) in restricted cash
                                                            36,000 1,787,000 2,000     1,389,000 -1,567,000 -440,000 2,860,000                   
          cash paid for acquisition of noncontrolling interests
                                                                                         
          mortgage loan assumption at fair value
                                                            44,644,000 25,506,000 36,961,000  -38,000 -78,000 8,021,000                       
          gains on dispositions of discontinued operations
                                                                                         
          distributions paid to noncontrolling interests in the operating partnership
                                                                                         
          real estate venture income in excess of distributions
                                                              251,000                           
          distributions paid to shareholders
                                                                                         
          decrease in cash and cash equivalents
                                                                                         
          real estate venture loss
                                                                                         
          investment in real estate venture
                                                                                         
          proceeds from sales to noncontrolling interests
                                                                       -33,000                  
          secured term loans
                                                                                         
          notes receivable originated upon disposition of property
                                                                                        
          proceeds from disposition of discontinued operations
                                                                                         
          proceeds from repayment of notes receivable
                                                                    256,000 2,276,000 17,580,000                   
          increase in restricted cash
                                                                                   682,000 1,034,000 984,000 -5,646,000 -1,120,000 1,663,000 
          proceeds from :
                                                                                         
          insurance settlements
                                                                                        
          net cash (used in) financing activities
                                                                                         
          gain deferral on sales to noncontrolling interests
                                                                                        
          adjustments to reconcile net income to net cash from operating activities:
                                                                                         
          lease abandonment charge
                                                                                        
          acquisitions, additions and improvements to storage facilities- related party
                                                                                         
          proceeds from issuance of equity
                                                                                         
          additions to storage facilities
                                                                                       
          disposition of facilities:
                                                                                         
          distributions paid to noncontrolling interests
                                                                                         
          supplemental cash flow information
                                                                                         
          acquisition of facilities
                                                                                         
          accretion of fair market value of debt
                                                                                   -182,000      
          cash flows from operating activities
                                                                                         
          asset write-off
                                                                                         
          early extinguishment of debt
                                                                                        
          minority interests
                                                                           271,000        -102,000      
          cash flows from investing activities
                                                                                         
          acquisitions, additions and improvements to storage facilities - related party
                                                                                         
          proceeds from sales of marketable securities
                                                                                         
          investment in marketable securities
                                                                                         
          cash flows from financing activities
                                                                                         
          unsecured term loan
                                                                                         
          secured term loan
                                                                                      
          short-term financing
                                                                                         
          short term financing
                                                                                   -60,000,000      
          capital lease obligations
                                                                                   -8,000 -16,000 -18,000 -24,000 -42,000 171,000 
          distributions paid to minority partners
                                                                                         
          proceeds from exercise of stock options
                                                                                         
          acquisitions of facilities:
                                                                                         
          mortgage loans
                                                                                         
          other
                                                                                         
          dispositions of facilities:
                                                                                         
          notes receivable
                                                                                         
          gain on sale of assets
                                                                                     -1,000    
          net proceeds from sale of common shares
                                                                                         
          acquisations of facilities:
                                                                                         
          sales of properties
                                                                                        
          storage facilities acquired through the assumption of a mortgage loan
                                                                                   13,347,000    6,421,000  
          other assets and liabilites (net) acquired as part of storage facility acquisitions
                                                                                         
          acquisitions, additions and improvements to storage facilities—related party
                                                                                         
          proceeds from sales of assets
                                                                                         
          cash flows from operating activities:
                                                                                         
          asset write-offs
                                                                                         
          cash flows from investing activities:
                                                                                         
          acquisitions, additions and improvements to storage facilities — related party
                                                                                   -37,387,000      
          net proceeds from sales of assets
                                                                                        
          cash flows from financing activities:
                                                                                         
          loans payable
                                                                                    72,457,000 61,500,000 99,017,000 -517,000 -154,500,000 
          shareholder distributions
                                                                                   -16,658,000 -16,005,000 -10,497,000 -10,498,000 -7,532,000  
          minority interest distributions
                                                                                   -1,512,000 -1,228,000 -426,000 -428,000 -267,000  
          net decrease in cash
                                                                                   2,421,000  9,006,000    
          cash and cash equivalents—beginning of period
                                                                                        
          cash and cash equivalents—end of period
                                                                                   2,421,000      
          supplemental disclosure of non-cash activities:
                                                                                         
          storage facilities acquired through the issuance of limited partnership units in the operating partnership
                                                                                     61,842,000 -1,720,000 8,472,000  
          other assets and liabilities (net) acquired as part of storage facility acquisitions
                                                                                   1,022,000  233,000 852,000 138,000  
          proceeds from exercise of stock options and other
                                                                                         
          adjustments to reconcile net income to net cash from operating activities
                                                                                         
          costs incurred to acquire management company — related party
                                                                                         
          minority interest
                                                                                         
          gain on sale of storage facilities
                                                                                         
          acquisition of management company, net — related party
                                                                                         
          net proceeds from sales of storage facilities
                                                                                         
          notes payable — related parties
                                                                                         
          cash contributions from owners
                                                                                         
          loan made to owners
                                                                                         
          cash distributions to owners
                                                                                         
          pre-payment penalty on debt extinguishment
                                                                                         
          net increase in cash
                                                                                       -20,234,000 29,521,000 
          cash and cash equivalents — beginning of period
                                                                                         
          cash and cash equivalents — end of period
                                                                                         
          cash paid for interest
                                                                                         
          cash paid for taxes
                                                                                         
          contribution of facilities from prior owners for operating partnership units:
                                                                                         
          investment in real estate
                                                                                         
          net assets acquired
                                                                                         
          asset impairment
                                                                                         
          insurance recovery
                                                                                         
          minority interest in net income of subsidiaries
                                                                                     195,000 96,000 60,000  
          proceeds from sale of asset
                                                                                        
          notes payable—related parties
                                                                                         
          notes payable related parties
                                                                                         
          cash—beginning of period
                                                                                     28,485,000  
          cash—end of period
                                                                                     9,006,000 -2,443,000 8,251,000  
          supplemental disclosure of non-cash investing and financing activities:
                                                                                         
          storage facilities acquired through the assumption of mortgage loans
                                                                                     82,921,000    
          description
                                                                                         
          land
                                                                                         
          buildings and improvements
                                                                                         
          equipment
                                                                                         
          total
                                                                                         
          less accumulated depreciation
                                                                                         
          storage facilities—net
                                                                                         
          proceeds from loan payable
                                                                                       35,000,000  
          share compensation expense
                                                                                         
          costs incurred to acquire management company
                                                                                         
          minority interest in net loss of subsidiaries
                                                                                         
          gain on sales of storage facilities
                                                                                         
          acquisition of management company
                                                                                         
          disposals of storage facilities
                                                                                         
          proceeds from sale of common shares
                                                                                         
          acquisition of management company from prior owners:
                                                                                         
          assets acquired
                                                                                         
          liabilities assumed
                                                                                         
          acquisition of 46 facilities:
                                                                                         
          acquisition of three facilities:
                                                                                         
          acquisition of four facilities:
                                                                                         
          investment in real estate, from related party
                                                                                         
          mortgage loans, assumed
                                                                                         
          acquisition of partnership interests:
                                                                                         
          contribution related to step-up in basis
                                                                                         
          acquisition of minority interest:
                                                                                         
          elimination of receivable
                                                                                         
          cash paid to acquire the facilities
                                                                                         
          reclassification of owners’ deficit to additional paid in capital
                                                                                         
          accrual for transfer of deferred financing fee assumed at merger date
                                                                                         
          record minority interest for limited partnership units in the operating partnership by reclassifying from additional paid in capital
                                                                                         
          items capitalized for funds yet to be disbursed
                                                                                         
          accrual for offering costs
                                                                                         
          accrual for distributions
                                                                                         
          grant of deferred share units and restricted shares to management executives and trustees
                                                                                         
          cash flows from operating activites:
                                                                                         
          improvements to storage facilities
                                                                                         
          disposals of storage facilities — net
                                                                                         
          cash — beginning of period
                                                                                         
          cash — end of period