7Baggers

Cohen & Steers, Inc
(NYSE:CNS) 

CNS stock logo

Cohen & Steers, Inc. is a publicly owned asset management holding company. Through its subsidiaries, the firm provides its services to institutional investors, including pension funds, endowments, and foundations. It manages separate client-focused equity, fixed income, multi-asset, and commodity po...

Founded: 1986
Full Time Employees: 328
Sector: Financial Services
Industry: Asset Management

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• Exchange:
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At a glance:
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Quarterly
Annual
    Unit: USD2025-12-31 2025-09-30 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 2012-09-30 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 
                                                                    
      revenue:
                                                                    
      investment advisory and administration fees
    135,890,000 133,628,000 128,545,000 126,771,000 131,740,000 125,397,000 114,577,000 115,345,000 112,033,000 116,226,000 113,118,000 118,034,000 117,102,000 130,885,000 137,655,000 143,669,000 148,637,000 143,638,000 134,348,000 116,921,000 107,940,000 103,160,000 86,648,000 97,289,000 101,157,000 96,763,000 91,473,000 84,632,000 84,222,000 88,150,000 84,420,000 84,434,000 91,479,000 88,557,000 84,893,000 81,903,000 81,410,000 86,079,000 79,090,000 73,088,000 75,269,000 73,487,000 77,221,000 77,752,000 76,063,000 75,210,000 72,907,000 67,564,000 67,658,000 67,704,000 70,353,000 65,394,000 63,224,000 59,687,000 58,155,000 55,310,000 58,048,000 57,469,000 51,052,000 48,008,000 42,909,000 40,835,000 38,092,000  
      distribution and service fees
    7,475,000 7,513,000 7,166,000 7,184,000 7,450,000 7,244,000 6,631,000 6,817,000 6,647,000 7,014,000 6,977,000 7,562,000 7,662,000 8,557,000 9,005,000 9,869,000 10,259,000 9,900,000 9,199,000 8,272,000 7,849,000 7,572,000 6,930,000 7,783,000 7,976,000 7,681,000 7,418,000 6,973,000 6,982,000 7,451,000 7,257,000 7,400,000 4,936,000 5,070,000 5,104,000 5,046,000 5,196,000 5,296,000 4,671,000 4,233,000 4,120,000 3,961,000 4,014,000 3,906,000 3,715,000 3,738,000 3,744,000 3,470,000 3,557,000 3,627,000 3,741,000 3,434,000 2,881,000 2,747,000 2,501,000 2,260,000 2,457,000 2,586,000 2,415,000 2,419,000 2,259,000 2,236,000 2,164,000  
      other
    438,000 579,000 415,000 512,000 593,000 562,000 513,000 548,000 508,000 497,000 535,000 486,000 571,000 509,000 771,000 651,000 733,000 649,000 722,000 554,000 671,000 427,000 509,000 758,000 714,000 521,000                         -368,000 -271,000 330,000 21,000 -784,000 -123,000 502,000 191,000 825,000 166,000 650,000 135,000 -88,000  
      total revenue
    143,803,000 141,720,000 136,126,000 134,467,000 139,783,000 133,203,000 121,721,000 122,710,000 119,188,000 123,737,000 120,630,000 126,082,000 125,335,000 139,951,000 147,431,000 154,189,000 159,629,000 154,187,000 144,269,000 125,747,000 116,460,000 111,159,000 94,087,000 105,830,000 109,847,000 104,965,000 101,792,000 94,226,000 93,906,000 98,331,000 94,410,000 94,464,000 99,342,000 96,354,000 92,812,000 89,686,000 89,434,000 94,388,000 86,373,000 79,681,000 81,671,000 79,667,000 83,502,000 83,815,000 81,842,000 80,845,000 78,412,000 72,835,000 73,432,000 74,026,000 77,796,000 72,459,000 71,296,000 67,432,000 63,730,000 59,416,000 61,616,000 61,459,000 54,755,000 51,790,000 46,372,000 44,232,000 41,344,000  
      yoy
    2.88% 6.39% 11.83% 9.58% 17.28% 7.65% 0.90% -2.67% -4.90% -11.59% -18.18% -18.23% -21.48% -9.23% 2.19% 22.62% 37.07% 38.71% 53.34% 18.82% 6.02% 5.90% -7.57% 12.32% 16.98% 6.75% 7.82% -0.25% -5.47% 2.05% 1.72% 5.33% 11.08% 2.08% 7.45% 12.56% 9.51% 18.48% 3.44% -4.93% -0.21% -1.46% 6.49% 15.08% 11.45% 9.21% 0.79% 0.52% 3.00% 9.78% 22.07% 21.95% 15.71% 9.72% 16.39% 14.72% 32.87% 38.95% 32.44%      
      qoq
    1.47% 4.11% 1.23% -3.80% 4.94% 9.43% -0.81% 2.95% -3.68% 2.58% -4.32% 0.60% -10.44% -5.07% -4.38% -3.41% 3.53% 6.87% 14.73% 7.97% 4.77% 18.14% -11.10% -3.66% 4.65% 3.12% 8.03% 0.34% -4.50% 4.15% -0.06% -4.91% 3.10% 3.82% 3.49% 0.28% -5.25% 9.28% 8.40% -2.44% 2.52% -4.59% -0.37% 2.41% 1.23% 3.10% 7.66% -0.81% -0.80% -4.85% 7.37% 1.63% 5.73% 5.81% 7.26% -3.57% 0.26% 12.24% 5.73% 11.68% 4.84% 6.99%   
      expenses:
                                                                    
      employee compensation and benefits
    56,076,000 57,196,000 56,640,000 54,554,000 56,504,000 56,376,000 53,097,000 52,003,000 49,601,000 52,830,000 48,893,000 48,857,000 48,562,000 51,669,000 53,857,000 54,743,000 43,348,000 53,092,000 53,241,000 45,762,000 42,460,000 41,060,000 34,320,000 38,617,000 34,993,000 37,877,000 36,846,000 33,715,000 34,504,000 33,126,000 32,506,000 31,156,000 32,395,000 31,886,000 30,412,000 29,383,000 28,329,000 30,951,000 28,287,000 28,040,000 27,440,000 25,892,000 28,395,000 25,983,000 26,142,000 26,679,000 25,876,000 24,035,000 22,377,000 24,058,000 24,895,000 23,377,000 25,101,000 22,927,000 21,668,000 20,694,000 21,873,000 21,818,000 19,986,000 20,198,000 18,085,000 17,251,000 16,124,000  
      general and administrative
    19,212,000 16,775,000 18,078,000 17,169,000 15,784,000 14,874,000 14,684,000 14,793,000 17,308,000 15,546,000 16,728,000 17,122,000 14,530,000 13,548,000 13,238,000 13,510,000 14,213,000 11,981,000 11,466,000 10,374,000 10,966,000 11,006,000 10,726,000 23,588,000 12,942,000 11,713,000 11,539,000 11,438,000 12,474,000 11,634,000 11,972,000 12,185,000 14,412,000 12,222,000 13,059,000 12,930,000 13,206,000 13,128,000 12,489,000 12,735,000 13,390,000 12,175,000 12,825,000 12,463,000 12,866,000 11,313,000 12,065,000 11,093,000 11,418,000 11,688,000 12,517,000 11,179,000 10,601,000 9,923,000 8,537,000 8,380,000 9,365,000 8,886,000 8,573,000 8,683,000 7,880,000 7,473,000 7,137,000  
      depreciation and amortization
    2,535,000 2,519,000 2,375,000 2,357,000 2,425,000 2,341,000 2,268,000 2,254,000 1,477,000 801,000 839,000 988,000 1,148,000 1,135,000 1,106,000 994,000 931,000 977,000 1,017,000 1,167,000 1,128,000 1,144,000 1,228,000 1,152,000 1,079,000 1,100,000 1,115,000 1,102,000 1,068,000 1,138,000 1,205,000 1,062,000 1,527,000 1,698,000 1,827,000 2,065,000 2,016,000 2,004,000 1,693,000 1,897,000 1,513,000 1,545,000 1,586,000 1,052,000 1,169,000 1,090,000 1,103,000 1,262,000 1,496,000 1,423,000 1,340,000 1,347,000 1,384,000 1,438,000 1,396,000 1,296,000 1,279,000 1,295,000 1,186,000 1,138,000 1,126,000 1,113,000 1,154,000  
      total expenses
    103,493,000 92,819,000 92,799,000 89,269,000 90,446,000 88,330,000 83,319,000 82,445,000 81,322,000 82,866,000 79,789,000 81,183,000 78,563,000 82,770,000 86,437,000 103,198,000 79,123,000 85,956,000 84,572,000 73,809,000 128,374,000 67,852,000 58,792,000 77,461,000 63,385,000 64,832,000 63,688,000 58,791,000 59,597,000 59,108,000 58,123,000 57,245,000 58,454,000 55,381,000 55,455,000 54,158,000 53,574,000 57,175,000 52,242,000 51,374,000 51,319,000 48,190,000 52,331,000 49,266,000 49,492,000 48,518,000 48,744,000 45,239,000 44,076,000 46,307,000 49,239,000 51,749,000 59,057,000 41,368,000 38,334,000 36,617,000 39,219,000 38,564,000 35,842,000 38,737,000 32,400,000 30,900,000 28,915,000  
      operating income
    40,310,000 48,901,000 43,327,000 45,198,000 49,337,000 44,873,000 38,402,000 40,265,000 37,866,000 40,871,000 40,841,000 44,899,000 46,772,000 57,181,000 60,994,000 50,991,000 80,506,000 68,231,000 59,697,000 51,938,000 -11,914,000 43,307,000 35,295,000 28,369,000 46,462,000 40,133,000 38,104,000 35,435,000 34,309,000 39,223,000 36,287,000 37,219,000 40,888,000 40,973,000 37,357,000 35,528,000 35,860,000 37,213,000 34,131,000 28,307,000 30,352,000 31,477,000 31,171,000 34,549,000 32,350,000 32,327,000 29,668,000 27,596,000 29,356,000 27,719,000 28,557,000 20,710,000 12,239,000 26,064,000 25,396,000 22,799,000 22,397,000 22,895,000 18,913,000 13,053,000 13,972,000 13,332,000 12,429,000  
      yoy
    -18.30% 8.98% 12.82% 12.25% 30.29% 9.79% -5.97% -10.32% -19.04% -28.52% -33.04% -11.95% -41.90% -16.19% 2.17% -1.82% -775.73% 57.55% 69.14% 83.08% -125.64% 7.91% -7.37% -19.94% 35.42% 2.32% 5.01% -4.79% -16.09% -4.27% -2.86% 4.76% 14.02% 10.10% 9.45% 25.51% 18.15% 18.22% 9.50% -18.07% -6.18% -2.63% 5.07% 25.20% 10.20% 16.62% 3.89% 33.25% 139.86% 6.35% 12.45% -9.16% -45.35% 13.84% 34.28% 74.66% 60.30% 71.73% 52.17%      
      qoq
    -17.57% 12.86% -4.14% -8.39% 9.95% 16.85% -4.63% 6.34% -7.35% 0.07% -9.04% -4.00% -18.20% -6.25% 19.62% -36.66% 17.99% 14.30% 14.94% -535.94% -127.51% 22.70% 24.41% -38.94% 15.77% 5.32% 7.53% 3.28% -12.53% 8.09% -2.50% -8.97% -0.21% 9.68% 5.15% -0.93% -3.64% 9.03% 20.57% -6.74% -3.57% 0.98% -9.78% 6.80% 0.07% 8.96% 7.51% -6.00% 5.91% -2.93% 37.89% 69.21% -53.04% 2.63% 11.39% 1.79% -2.18% 21.05% 44.89% -6.58% 4.80% 7.27%   
      operating margin %
    28.03% 34.51% 31.83% 33.61% 35.30% 33.69% 31.55% 32.81% 31.77% 33.03% 33.86% 35.61% 37.32% 40.86% 41.37% 33.07% 50.43% 44.25% 41.38% 41.30% -10.23% 38.96% 37.51% 26.81% 42.30% 38.23% 37.43% 37.61% 36.54% 39.89% 38.44% 39.40% 41.16% 42.52% 40.25% 39.61% 40.10% 39.43% 39.52% 35.53% 37.16% 39.51% 37.33% 41.22% 39.53% 39.99% 37.84% 37.89% 39.98% 37.44% 36.71% 28.58% 17.17% 38.65% 39.85% 38.37% 36.35% 37.25% 34.54% 25.20% 30.13% 30.14% 30.06%  
      non-operating income:
                                                                    
      interest and dividend income
    5,217,000 5,106,000 6,315,000 5,371,000 4,948,000 5,420,000                         2,886,000 1,801,000    499,000                             
      gain from investments—net
    -2,248,000 692,000 6,715,000 3,553,000 -1,359,000 18,975,000 -2,018,000 984,000 14,299,000 -10,056,000 356,000 -308,000 5,820,000 -5,920,000 -28,573,000 3,567,000 6,865,000 -418,000 7,778,000 4,559,000 7,315,000 3,279,000 7,317,000 -22,027,000 1,463,000 4,472,000 1,874,000 13,864,000 -9,572,000 413,000 -603,000 -4,502,000                                 
      foreign currency gain—net
    -991,000 859,000 -2,523,000 -1,172,000 2,779,000 -1,692,000 -483,000 134,000 -1,859,000 1,134,000 -1,134,000 -1,276,000 -5,487,000 2,405,000 1,683,000 646,000 -733,000 945,000 -79,000 -222,000 -952,000 -742,000 -257,000 1,035,000 -1,653,000 432,000 742,000                                      
      total non-operating income
    1,978,000 6,657,000 10,507,000 7,752,000 6,368,000 22,703,000 2,556,000 5,037,000 16,651,000 -5,159,000 2,650,000 1,632,000 2,825,000 -1,974,000 -25,002,000 5,110,000 6,837,000 1,246,000 8,536,000 4,953,000 6,989,000 3,231,000 7,953,000 -19,843,000 1,352,000 6,617,000 4,536,000 14,910,000 -3,329,000 1,047,000 -778,000 -199,000 2,839,000 2,327,000 261,000 227,000 1,427,000 1,356,000 4,466,000 643,000 -12,078,000 -2,972,000 1,797,000 -1,552,000 -4,541,000 -3,557,000 4,990,000 3,181,000 1,971,000 3,303,000 -10,178,000 2,926,000 5,315,000 -1,992,000 3,017,000 2,409,000 -4,833,000 1,306,000 975,000 5,134,000 4,489,000 2,050,000 1,035,000  
      income before provision for income taxes
    42,288,000 55,558,000 53,834,000 52,950,000 55,705,000 67,576,000 40,958,000 45,302,000 54,517,000 35,712,000 43,491,000 46,531,000 49,597,000 55,207,000 35,992,000 56,101,000 87,343,000 69,477,000 68,233,000 56,891,000 -4,925,000 46,538,000 43,248,000 8,526,000 47,814,000 46,750,000 42,640,000 50,345,000 30,980,000 40,270,000 35,509,000 37,020,000 43,727,000 43,300,000 37,618,000                    28,413,000   24,201,000 19,888,000 11,826,750 18,461,000 15,382,000 13,464,000  
      provision for income taxes
    11,585,000 13,924,000 12,062,000 9,661,000 12,687,000 12,293,000 10,881,000 10,888,000 11,880,000 10,543,000 10,986,000 10,233,000 12,715,000 15,593,000 9,843,000 9,260,000 17,412,000 18,090,000 15,827,000 4,461,000 -5,854,000 12,532,000 11,086,000 458,000 9,854,000 10,352,000 9,991,000 10,368,000 5,682,000 10,539,000 9,940,000 8,096,000 22,921,000 17,562,000 14,620,000                    10,155,000   8,442,000 6,986,000 5,436,000 5,298,000 3,781,000 4,574,000  
      net income
    30,703,000 41,634,000 41,772,000 43,289,000 43,018,000 55,283,000 30,077,000 34,414,000 42,637,000 25,169,000 32,505,000 36,298,000 36,882,000 39,614,000 26,149,000 46,841,000 69,931,000 51,387,000 52,406,000 52,430,000 929,000 34,006,000 32,162,000 8,068,000 37,960,000 36,398,000 32,649,000 39,977,000 25,298,000 29,731,000 25,569,000 28,924,000 20,806,000 25,738,000 22,998,000 22,944,000 26,191,000 23,831,000 24,921,000 17,867,000 5,828,000 16,964,000 20,774,000 20,771,000 15,173,000 18,037,000 22,924,000 19,600,000 19,428,000 19,817,000 8,509,000 15,501,000 12,567,000 15,027,000 18,258,000 16,074,000 9,542,000 15,759,000 12,902,000 12,751,000 13,163,000 11,601,000 8,890,000  
      yoy
    -28.63% -24.69% 38.88% 25.79% 0.89% 119.65% -7.47% -5.19% 15.60% -36.46% 24.31% -22.51% -47.26% -22.91% -50.10% -10.66% 7427.56% 51.11% 62.94% 549.85% -97.55% -6.57% -1.49% -79.82% 50.05% 22.42% 27.69% 38.21% 21.59% 15.51% 11.18% 26.06% -20.56% 8.00% -7.72% 28.42% 349.40% 40.48% 19.96% -13.98% -61.59% -5.95% -9.38% 5.97% -21.90% -8.98% 169.41% 26.44% 54.60% 31.88% -53.40% -3.56% 31.70% -4.64% 41.51% 26.06% -27.51% 35.84% 45.13%      
      qoq
    -26.25% -0.33% -3.50% 0.63% -22.19% 83.80% -12.60% -19.29% 69.40% -22.57% -10.45% -1.58% -6.90% 51.49% -44.17% -33.02% 36.09% -1.94% -0.05% 5543.70% -97.27% 5.73% 298.64% -78.75% 4.29% 11.48% -18.33% 58.02% -14.91% 16.28% -11.60% 39.02% -19.16% 11.91% 0.24% -12.40% 9.90% -4.37% 39.48% 206.57% -65.64% -18.34% 0.01% 36.89% -15.88% -21.32% 16.96% 0.89% -1.96% 132.89% -45.11% 23.35% -16.37% -17.70% 13.59% 68.46% -39.45% 22.14% 1.18% -3.13% 13.46% 30.49%   
      net income margin %
    21.35% 29.38% 30.69% 32.19% 30.77% 41.50% 24.71% 28.04% 35.77% 20.34% 26.95% 28.79% 29.43% 28.31% 17.74% 30.38% 43.81% 33.33% 36.33% 41.69% 0.80% 30.59% 34.18% 7.62% 34.56% 34.68% 32.07% 42.43% 26.94% 30.24% 27.08% 30.62% 20.94% 26.71% 24.78% 25.58% 29.29% 25.25% 28.85% 22.42% 7.14% 21.29% 24.88% 24.78% 18.54% 22.31% 29.24% 26.91% 26.46% 26.77% 10.94% 21.39% 17.63% 22.28% 28.65% 27.05% 15.49% 25.64% 23.56% 24.62% 28.39% 26.23% 21.50%  
      net loss attributable to noncontrolling interests
    4,176,000 77,000 -4,923,000 -3,511,000 2,804,000 -15,615,000 1,694,000 -410,000 -12,820,000 6,971,000 -727,000 -984,000                                                     
      net income attributable to common stockholders
    34,879,000 41,711,000 36,849,000 39,778,000 45,822,000 39,668,000 31,771,000 34,004,000 29,817,000 32,140,000 31,778,000 35,314,000 32,498,000 44,570,000 51,956,000 42,018,000 64,482,000 51,483,000 46,579,000 48,852,000 -4,412,000 31,904,000 28,520,000 20,572,000 36,728,000 34,017,000 31,333,000 32,543,000 25,561,000 30,790,000 29,959,000 27,586,000 20,398,000 25,082,000 23,474,000 22,985,000 26,168,000 23,877,000 24,808,000 18,083,000 5,879,000 17,093,000 20,763,000 20,816,000 15,698,000 18,184,000 22,183,000 19,445,000                 
      earnings per share attributable to common stockholders:
                                                                    
      basic
    0.68 0.81 0.72 0.78 0.9 0.78 0.63 0.69 0.61 0.65 0.64 0.72 0.67 0.91 1.06 0.86 1.34 1.06 0.96 1.01 -0.1 0.67 0.6 0.43 0.78 0.72 0.66 0.69 0.54 0.66 0.64 0.59 0.44 0.54 0.51 0.5 0.57 0.52 0.54 0.39 0.13 0.38 0.46 0.46 0.35 0.41 0.49 0.44 0.44 0.41 0.34 0.34 0.23 0.37 0.41 0.37 0.22 0.36 0.3 0.198 0.31 0.27 0.21  
      diluted
    0.67 0.81 0.72 0.77 0.89 0.77 0.63 0.68 0.6 0.65 0.64 0.71 0.66 0.9 1.06 0.85 1.31 1.05 0.95 -0.1 0.66 0.59 0.42 0.76 0.7 0.65 0.68 0.53 0.65 0.63 0.59 0.43 0.53 0.5 0.49 0.56 0.51 0.53 0.39 0.13 0.37 0.45 0.45 0.34 0.4 0.49 0.43 0.43 0.41 0.34 0.34 0.23 0.36 0.41 0.36 0.22 0.36 0.3 0.195 0.3 0.27 0.21  
      weighted-average shares outstanding:
                                                                    
      basic
    51,168 51,205 51,165 51,058 50,409 50,778 50,419 49,569 49,308 49,351 49,315 49,199 48,781 48,815 48,805 48,673 48,316 48,386 48,285 48,145 47,800 47,855 47,826 47,651 47,273 47,316 47,304 47,146 46,794 46,830 46,819 46,683 46,353 46,386 46,373 46,243 45,951 45,999 45,984 45,808 45,433 45,500 45,462 45,241 44,788 44,839 44,825 44,633 44,272 44,317 44,306 44,137 43,822 43,808 43,601 43,190 43,237 43,220 43,051 42,715 42,756 42,730 42,600  
      diluted
    51,526 51,572 51,471 51,418 50,938 51,428 50,770 49,835 49,553 49,617 49,463 49,402 49,297 49,317 49,208 49,337 49,090 49,262 48,951 48,709 48,676 48,681 48,572 48,591 48,297 48,412 48,175 47,642 47,381 47,524 47,311 47,152 46,979 47,047 46,902 46,603 46,432 46,544 46,378 46,195 45,897 45,830 45,805 45,980 45,643 45,689 45,530 45,483 45,083 45,106 45,002 44,882 44,537 44,393 44,386 43,975 44,133 43,840 43,781 43,227 43,217 43,143 42,937  
      interest and dividend income—net
          5,057,000 3,919,000 4,211,000 3,763,000 3,428,000 3,216,000 2,492,000 1,541,000 1,888,000 897,000 705,000 719,000 837,000 616,000 626,000 694,000 893,000 1,149,000 1,542,000 1,713,000 1,920,000 1,541,000 2,992,000 2,747,000   677,500 1,425,000 786,000  366,750 367,000 558,000 542,000 560,000 291,000 450,000 299,000 617,000 610,000 592,000 239,000 773,000 218,000 743,000 546,000 478,000 669,000 621,000 269,000 260,000 355,000 184,000 182,000 710,000 366,000 195,000  
      net loss attributable to redeemable noncontrolling interests
                6,485,000 4,956,000 25,807,000 -4,823,000 -5,449,000 96,000 -5,827,000                                              
      dividends declared per share
                    0.338 0.45 0.45 0.45 0.293 0.39 0.39 0.39 0.27 0.36 0.36 0.36 0.248 0.33 0.33 0.33 0.21 0.28 0.28 0.28 0.195 0.26 0.26 0.26 0.188 0.25 0.25 0.25 0.165 0.22 0.22 0.22 0.15 0.2               
      less: net loss attributable to redeemable noncontrolling interests
                       -3,578,000 -5,341,000 -2,102,000 -3,642,000 12,504,000 -1,232,000 -2,381,000 -1,316,000 -7,434,000                                     
      portfolio consulting and other
                              2,901,000 2,621,000 2,702,000 2,730,000 2,733,000 2,630,000 2,927,000 2,727,000 2,815,000 2,737,000 2,828,000 3,013,000 2,612,000 2,360,000 2,282,000 2,219,000 2,267,000 2,157,000 2,064,000 1,897,000 1,761,000 1,801,000 2,217,000 2,695,000 3,702,000 3,631,000 5,191,000 4,998,000 3,074,000 1,846,000 1,111,000 1,404,000 1,288,000 1,363,000 1,204,000 1,161,000 1,088,000  
      foreign currency gains—net
                               -495,000 3,251,000 -2,113,000                                   
      less: net loss attributable to redeemable noncontrolling interest
                                1,027,750 1,059,000 4,390,000 -1,338,000 -408,000 -656,000 476,000                    -204,000   -80,000 73,000   2,000   
      other gains—net
                                  -3,061,000 2,502,000 -67,000 -10,000 -331,000                              
      gain from trading investments—net
                                    1,045,000 595,000 2,000 273,000 -216,000 -376,000 1,017,000    205,000 -451,000                     
      equity in earnings of affiliates—net
                                    244,000 82,000                               
      gain from available-for-sale investments—net
                                    -6,000 235,000 83,000 35,000 379,000 944,000 158,000 -30,000   320,000 100,000                     
      equity in earnings of affiliates
                                      -279,000        1,085,000     935,000 105,500 313,000  536,000   772,000   627,000 -14,000 2,825,000 1,005,000  541,000  
      equity in (losses) earnings of affiliates
                                       -289,000        -1,081,000 -2,748,000 -1,571,000     -427,000   -129,000  1,614,000 -5,248,000        
      other losses
                                       -291,000    -89,000 -51,000 -270,000  -419,000    -52,000                 
      income before benefit from income taxes
                                       35,755,000 26,529,000 38,569,000 38,597,000 28,950,000 18,274,000 28,505,000 32,968,000 32,997,000 27,809,000 28,770,000 34,658,000 30,777,000 31,327,000 31,022,000 18,379,000 23,636,000 17,554,000 24,072,000  25,208,000 17,564,000        
      benefit from income taxes
                                       12,811,000 9,874,250 14,738,000 13,676,000 11,083,000 12,446,000 11,541,000 12,194,000 12,226,000 12,636,000 10,733,000 11,734,000 11,177,000 11,899,000 11,205,000 9,870,000 8,135,000 4,987,000 9,045,000  9,134,000 8,022,000        
      less: net income attributable to redeemable noncontrolling interest
                                       41,000 37,250 46,000  216,000        -155,000   6,773,000 -360,000           -10,000  
      equity in earnings (losses) of affiliates
                                        799,250 130,000 2,640,000 427,000       1,429,000      71,000            
      other gains
                                        485,000 291,000 93,000                          
      less: net (income) loss attributable to redeemable noncontrolling interest
                                          -113,000    -11,000    -741,000  1,219,750 -1,534,000   -2,306,000            
      income from trading investments—net
                                           -207,000                         
      gain from seed investments—net
                                            -703,750 -2,993,000                       
      less: net income (income) attributable to redeemable noncontrolling interest
                                            51,000 129,000  45,000 -187,250 147,000        1,052,000  -27,000 64,000        
      other (losses) income
                                              -263,000  -140,750 -666,000                   
      amortization of deferred commissions
                                               517,000                     
      amortization, deferred commissions
                                                344,250 388,000 444,000 545,000 658,000 776,000 810,000 765,000 595,000 545,000 496,000 489,000 497,000 415,000 343,000 293,000 244,000 232,000 190,000  
      gain from trading securities—net
                                                263,750 -2,690,000 2,762,000 983,000 344,000 2,383,000  1,624,000 3,999,000  1,721,000 495,000 21,000  -378,000   -371,000 189,000  
      gain from available-for-sale securities—net
                                                472,000 760,000 52,000 1,076,000 751,000 180,000 837,000 491,000 437,000 -84,000 687,000 154,000 -368,000 232,000 358,000 1,961,000 2,124,000 3,281,000 198,000  
      other income
                                                  155,000                  
      other gain
                                                    -107,500 209,000               
      net income attributable to common shareholders
                                                    12,176,500 18,283,000 15,282,000 15,141,000 10,261,000 16,079,000 18,054,000 16,047,000 9,606,000 15,679,000 12,975,000 12,751,000 13,163,000 11,603,000 8,880,000  
      earnings per share attributable to common shareholders:
                                                                    
      basic
    0.68 0.81 0.72 0.78 0.9 0.78 0.63 0.69 0.61 0.65 0.64 0.72 0.67 0.91 1.06 0.86 1.34 1.06 0.96 1.01 -0.1 0.67 0.6 0.43 0.78 0.72 0.66 0.69 0.54 0.66 0.64 0.59 0.44 0.54 0.51 0.5 0.57 0.52 0.54 0.39 0.13 0.38 0.46 0.46 0.35 0.41 0.49 0.44 0.44 0.41 0.34 0.34 0.23 0.37 0.41 0.37 0.22 0.36 0.3 0.198 0.31 0.27 0.21  
      diluted
    0.67 0.81 0.72 0.77 0.89 0.77 0.63 0.68 0.6 0.65 0.64 0.71 0.66 0.9 1.06 0.85 1.31 1.05 0.95 -0.1 0.66 0.59 0.42 0.76 0.7 0.65 0.68 0.53 0.65 0.63 0.59 0.43 0.53 0.5 0.49 0.56 0.51 0.53 0.39 0.13 0.37 0.45 0.45 0.34 0.4 0.49 0.43 0.43 0.41 0.34 0.34 0.23 0.36 0.41 0.36 0.22 0.36 0.3 0.195 0.3 0.27 0.21  
      income from trading securities—net
                                                      -10,963,000   -2,469,000           
      loss from trading securities—net
                                                             -99,000       
      equity in losses of affiliates
                                                                 -1,361,000   
      earnings per share attributable to common shareholders
                                                                    
      basic
    0.68 0.81 0.72 0.78 0.9 0.78 0.63 0.69 0.61 0.65 0.64 0.72 0.67 0.91 1.06 0.86 1.34 1.06 0.96 1.01 -0.1 0.67 0.6 0.43 0.78 0.72 0.66 0.69 0.54 0.66 0.64 0.59 0.44 0.54 0.51 0.5 0.57 0.52 0.54 0.39 0.13 0.38 0.46 0.46 0.35 0.41 0.49 0.44 0.44 0.41 0.34 0.34 0.23 0.37 0.41 0.37 0.22 0.36 0.3 0.198 0.31 0.27 0.21  
      diluted
    0.67 0.81 0.72 0.77 0.89 0.77 0.63 0.68 0.6 0.65 0.64 0.71 0.66 0.9 1.06 0.85 1.31 1.05 0.95 -0.1 0.66 0.59 0.42 0.76 0.7 0.65 0.68 0.53 0.65 0.63 0.59 0.43 0.53 0.5 0.49 0.56 0.51 0.53 0.39 0.13 0.37 0.45 0.45 0.34 0.4 0.49 0.43 0.43 0.41 0.34 0.34 0.23 0.36 0.41 0.36 0.22 0.36 0.3 0.195 0.3 0.27 0.21  
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-12-31 2025-09-30 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 2012-09-30 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 
                                                                      
        assets:
                                                                      
        cash and cash equivalents
      145,452,000 98,054,000 95,372,000 65,227,000 182,974,000 106,474,000 122,013,000 99,521,000 187,442,000 133,050,000 178,471,000 149,518,000 247,418,000 161,957,000 126,569,000 84,817,000 184,373,000 168,472,000 111,229,000 54,717,000 41,232,000 96,305,000 88,135,000 42,960,000 101,352,000 128,328,000 102,109,000 56,386,000 92,733,000 164,460,000 193,729,000 168,644,000 193,452,000 198,873,000 178,414,000 156,685,000 183,234,000 163,117,000 140,684,000 122,914,000 142,728,000 146,247,000 125,807,000 99,493,000 124,938,000 137,807,000 112,328,000 125,745,000 128,277,000 143,845,000 107,465,000 80,272,000 121,240,000 120,273,000 90,605,000 127,824,000 95,212,000 140,671,000 117,683,000 136,191,000 100,819,000 165,530,000 152,745,000 153,002,000 
        investments
      436,485,000 415,793,000 357,630,000 473,383,000 335,377,000 320,883,000 371,345,000 273,040,000 258,970,000 256,927,000 188,227,000 211,352,000 172,955,000 201,712,000 308,432,000 284,503,000 154,654,000 138,044,000 138,171,000 128,437,000 154,978,000 151,365,000 147,538,000 141,697,000 155,213,000 168,331,000 152,961,000 187,063,000 224,932,000 207,908,000 147,668,000 139,435,000                                 
        accounts receivable
      79,775,000 68,326,000 72,884,000 79,020,000 74,389,000 78,673,000 65,267,000 75,329,000 68,889,000 70,289,000 63,217,000 76,564,000 70,193,000 78,844,000 75,714,000 89,423,000 84,090,000 89,142,000 78,752,000 71,957,000 69,680,000 67,094,000 51,995,000 63,659,000 59,101,000 65,614,000 54,362,000 59,973,000 50,381,000 60,110,000 50,586,000 63,016,000 53,854,000 62,341,000 50,635,000 58,676,000 46,288,000 62,135,000 47,681,000 54,488,000 44,559,000 52,225,000 44,455,000 54,935,000 43,392,000 50,950,000 42,352,000 49,489,000 40,888,000 52,726,000 45,762,000 57,249,000 61,169,000 47,012,000 53,584,000 39,590,000 50,680,000 39,258,000 41,831,000 32,821,000 34,800,000 25,924,000 29,436,000 23,324,000 
        due from brokers
      1,865,000 2,586,000 4,163,000 3,874,000 1,474,000 2,446,000 3,657,000 17,089,000 4,677,000 2,808,000 2,570,000 2,356,000 2,080,000 2,930,000 6,717,000 63,101,000 3,567,000 3,251,000 7,214,000 6,081,000 5,125,000 2,443,000 497,000 145,000 1,743,000 3,677,000 3,323,000 4,597,000 14,240,000 6,250,000 11,435,000 11,790,000 6,429,000 6,567,000 14,452,000 2,159,000 1,579,000                            
        property and equipment—net
      65,068,000 67,440,000 67,562,000 67,529,000 68,604,000 69,659,000 70,326,000 68,394,000 66,336,000 52,307,000 36,328,000 12,357,000 8,757,000 8,621,000 8,380,000 8,618,000 8,938,000 9,055,000 9,040,000 9,604,000 10,341,000 10,920,000 11,584,000 12,091,000 12,486,000 12,993,000 13,487,000 14,011,000 14,106,000 14,196,000 14,571,000 14,939,000 15,040,000 15,317,000 15,471,000 15,557,000 15,964,000 14,055,000 12,989,000 10,070,000 9,783,000 9,894,000 9,996,000 10,136,000 11,189,000 11,319,000 9,674,000 9,274,000 9,824,000 9,387,000 9,264,000 9,171,000 9,418,000 9,970,000 10,893,000 11,200,000 11,769,000 12,063,000 12,832,000 13,242,000 13,226,000 13,347,000 14,092,000 14,866,000 
        operating lease right-of-use assets—net
      97,342,000 98,748,000 99,929,000 98,368,000 99,200,000 100,927,000 101,624,000 101,374,000 103,302,000 99,605,000 107,759,000 132,448,000 136,430,000 14,016,000 16,729,000 19,473,000 22,009,000 24,293,000 26,082,000 28,646,000                                             
        goodwill and intangible assets—net
      20,040,000 20,046,000 20,034,000 19,169,000 18,756,000 19,500,000 19,091,000 19,157,000 19,395,000 18,971,000 19,269,000 19,226,000 19,049,000 18,240,000 18,847,000 19,469,000 19,696,000 19,897,000 20,146,000 20,048,000 20,495,000 20,023,000 19,567,000 19,326,000 19,560,000 19,261,000 19,711,000 19,564,000 19,751,000 19,949,000 20,028,000 20,625,000 20,379,000 20,230,000 19,866,000 19,233,000 19,118,000 19,779,000 19,683,000 19,968,000 19,498,000 19,798,000 19,801,000                      
        other assets
      30,667,000 30,619,000 33,449,000 28,295,000 31,592,000 29,225,000 30,729,000 26,821,000 27,543,000 39,951,000 29,146,000 19,582,000 16,497,000 20,012,000 15,986,000 13,806,000 15,360,000 16,439,000 12,535,000 11,538,000 8,404,000 8,594,000 8,675,000 10,980,000 7,433,000 13,548,000 7,439,000 11,107,000 9,208,000 8,626,000 8,254,000 8,698,000 7,053,000 7,109,000 6,890,000 7,055,000 7,382,000 6,341,000 6,778,000 6,445,000 5,765,000 5,083,000 5,304,000 5,652,000 4,229,000 6,231,000 7,626,000 5,211,000 5,673,000        5,753,000 5,278,000 3,586,000 3,254,000 3,752,000 3,960,000 3,121,000 3,862,000 
        total assets
      876,694,000 801,612,000 751,023,000 834,865,000 812,366,000 727,787,000 784,052,000 680,725,000 736,554,000 673,908,000 624,987,000 623,403,000 673,379,000 506,332,000 577,374,000 583,210,000 492,687,000 468,593,000 403,169,000 333,093,000 348,453,000 397,466,000 368,288,000 333,655,000 402,419,000 459,704,000 404,002,000 405,808,000 432,551,000 488,185,000 450,116,000 428,941,000 410,125,000 423,999,000 397,883,000 319,540,000 333,728,000 331,493,000 297,070,000 278,280,000 305,322,000 296,023,000 277,011,000 255,002,000 280,721,000 327,334,000 293,130,000 274,231,000 274,926,000 297,111,000 353,201,000 354,336,000 365,916,000 335,785,000 318,150,000 286,233,000 258,108,000 293,811,000 271,785,000 277,586,000 253,636,000 312,050,000 308,961,000 328,711,000 
        liabilities:
                                                                      
        accrued compensation and benefits
      80,614,000 59,972,000 39,947,000 19,963,000 71,049,000 48,679,000 32,967,000 17,161,000 66,382,000 49,989,000 31,487,000 16,564,000 77,764,000 62,371,000 44,668,000 24,750,000 79,167,000 64,228,000 42,940,000                                              
        distribution and service fees payable
      8,623,000 8,698,000 8,337,000 8,194,000 8,485,000 8,314,000 9,051,000 7,721,000 10,144,000 9,310,000 8,560,000 9,605,000 8,421,000 9,724,000 11,956,000 9,923,000 10,183,000 11,271,000 10,237,000 8,598,000 7,748,000 6,722,000 7,477,000 6,029,000 7,318,000 8,503,000 6,803,000 6,860,000 8,493,000 8,520,000 6,361,000 6,774,000 6,231,000 7,924,000 7,089,000 6,448,000 6,452,000 7,107,000 6,065,000 5,793,000 6,192,000                        
        operating lease liabilities
      138,326,000 140,279,000 141,563,000 140,046,000 141,115,000 140,595,000 141,437,000 141,380,000 140,408,000 133,287,000 115,565,000 137,742,000 138,809,000 15,623,000 18,638,000 21,687,000 24,525,000 27,110,000 29,202,000 32,068,000 34,926,000 37,669,000 37,716,000 40,587,000 43,349,000 46,047,000 48,845,000 51,584,000                                     
        income tax payable
      1,650,000 1,318,000 192,000 6,897,000 4,601,000 1,490,000 646,000 11,140,000 5,115,000 9,202,000 216,000 11,275,000 7,750,000 7,497,000 5,487,000 27,207,000 22,611,000 21,065,000 15,542,000 10,991,000 12,672,000 23,440,000 33,629,000 23,162,000 22,194,000 20,154,000 18,641,000 27,343,000 18,663,000 18,953,000 14,309,000 23,001,000 19,892,000 12,362,000 8,583,000 15,906,000 9,375,000 9,167,000 5,800,000 12,981,000 6,780,000 1,508,000 1,397,000 1,164,000 4,141,000 3,342,000 1,461,000 7,397,000 7,575,000 8,846,000 9,746,000 5,150,000 2,584,000 5,777,000 2,115,000 4,948,000 7,759,000 7,875,000 2,824,000 9,077,000 5,589,000 1,156,000 1,639,000  
        due to brokers
      319,000 123,000 4,096,000 4,232,000 2,111,000 1,325,000 595,000 17,794,000 201,000 2,710,000 1,257,000 1,223,000 835,000 4,460,000 6,021,000 45,819,000 927,000 2,654,000 3,403,000 134,000 501,000 293,000 62,000 82,000 366,000 1,633,000 2,403,000 1,040,000 5,121,000 3,793,000 5,475,000 7,137,000 3,282,000 3,738,000 11,835,000                              
        other liabilities and accrued expenses
      13,314,000 11,965,000 14,567,000 14,181,000 10,102,000 14,832,000 14,952,000 10,698,000 21,657,000 13,114,000 23,995,000 17,400,000 12,857,000 13,497,000 15,221,000 13,803,000 10,948,000 11,692,000 9,876,000 10,050,000 15,646,000 11,553,000 10,743,000 13,894,000 13,972,000 13,971,000 9,304,000 8,147,000 13,935,000 10,294,000 9,357,000 10,492,000 10,025,000 8,898,000 9,753,000 7,088,000 9,672,000 8,700,000 7,465,000 7,829,000 8,000,000 15,092,000 11,711,000 13,074,000 13,964,000 15,309,000 14,775,000 17,291,000 18,373,000        14,061,000 11,967,000 9,906,000 12,662,000 9,898,000 9,133,000 8,696,000 9,593,000 
        total liabilities
      242,846,000 222,355,000 208,702,000 193,513,000 237,463,000 215,235,000 199,648,000 205,894,000 243,907,000 217,612,000 181,080,000 193,809,000 246,436,000 113,172,000 101,991,000 143,189,000 148,361,000 138,020,000 111,200,000 81,501,000 123,549,000 116,292,000 111,672,000 96,550,000 135,304,000 127,694,000 109,523,000 106,293,000 95,713,000 79,116,000 62,116,000 63,494,000 86,794,000 69,333,000 62,411,000 45,204,000 67,061,000 58,386,000 40,976,000 40,003,000 62,212,000 49,361,000 34,254,000 26,566,000 52,133,000 45,565,000 35,852,000 41,026,000 51,162,000 45,911,000 46,180,000 60,363,000 58,036,000 48,937,000 46,937,000 50,925,000 43,049,000 34,495,000 27,168,000 44,221,000 31,143,000 20,916,000 20,924,000 40,376,000 
        commitments and contingencies
                                                                      
        redeemable noncontrolling interests
      22,805,000 14,585,000 1,250,000 121,710,000 53,460,000 14,491,000 114,570,000 90,909,000 106,463,000 84,119,000 85,518,000 87,249,000 85,335,000 77,530,000 185,998,000 184,656,000 89,143,000 66,032,000 66,081,000 62,365,000 50,665,000 45,420,000 43,073,000 41,601,000 53,412,000 53,109,000 38,104,000 64,354,000 114,192,000                                    
        stockholders’ equity:
                                                                      
        common stock, 0.01 par value...
      583,000 582,000 582,000 582,000 575,000 574,000 574,000 564,000 558,000 558,000 558,000 558,000 551,000 550,000 550,000 550,000 543,000 542,000 542,000 542,000 535,000 535,000 535,000 535,000 527,000 527,000 526,000 525,000 518,000 518,000 518,000 518,000 511,000 511,000 511,000 511,000 504,000 504,000 504,000 503,000 497,000 497,000 497,000 496,000 486,000 486,000 486,000 485,000 477,000 477,000 477,000 477,000 470,000 469,000 469,000 462,000 461,000 461,000 461,000 454,000 454,000 454,000 453,000 448,000 
        additional paid-in capital
      992,948,000 982,023,000 968,684,000 955,669,000 943,281,000 931,510,000 916,006,000 832,496,000 818,269,000 806,145,000 794,159,000 781,300,000 769,373,000 755,487,000 742,144,000 728,644,000 715,847,000 703,790,000 692,719,000 680,466,000 670,142,000 660,689,000 652,579,000 644,397,000 636,788,000 625,822,000 617,726,000 609,854,000 602,272,000 590,827,000 584,035,000 577,169,000 570,486,000 562,738,000 556,383,000 550,249,000 543,829,000 537,293,000 531,700,000 526,017,000 519,855,000 512,943,000 507,180,000 500,604,000 489,266,000 479,835,000 472,914,000 466,007,000 457,138,000 449,568,000 443,623,000 437,206,000 420,373,000 415,818,000 410,747,000 402,573,000 396,437,000 388,752,000 383,996,000 378,081,000 374,051,000 364,497,000 360,458,000 357,886,000 
        accumulated deficit
      -105,806,000 -108,271,000 -117,510,000 -121,933,000 -129,339,000 -144,420,000 -153,360,000 -154,361,000 -158,186,000 -159,082,000 -162,231,000 -165,053,000 -171,417,000 -176,235,000 -193,146,000 -217,453,000 -231,967,000 -211,676,000 -240,744,000 -265,034,000 -291,542,000 -218,643,000 -231,409,000 -240,930,000 -242,461,000 -163,500,000 -179,852,000 -193,523,000 -208,404,000 -96,544,000 -111,333,000 -125,293,000 -137,972,000 -96,926,000 -108,581,000 -118,663,000 -127,957,000 -118,088,000 -129,672,000 -142,266,000 -148,096,000 -118,914,000 -124,380,000 -133,574,000 -142,786,000 -101,783,000 -109,853,000 -121,936,000 -131,366,000 -96,483,000 -105,670,000 -111,861,000 -62,907,000 -65,089,000 -73,101,000 -83,063,000 -92,483,000 -50,145,000 -59,197,000 -65,553,000 -73,973,000  -832,000  
        accumulated other comprehensive loss
      -4,657,000 -4,487,000 -3,958,000 -7,923,000 -10,025,000 -5,414,000 -8,874,000 -8,690,000 -7,708,000 -10,180,000 -8,537,000 -9,213,000 -10,784,000 -14,947,000 -11,051,000 -7,437,000 -5,886,000 -5,986,000 -4,530,000                                              
        treasury stock
      -321,115,000 -319,555,000 -319,297,000 -318,708,000 -292,781,000 -291,241,000 -291,173,000 -291,069,000 -271,705,000 -270,847,000 -270,797,000 -270,610,000 -250,169,000 -249,225,000 -249,112,000 -248,939,000 -223,354,000 -222,129,000 -222,099,000                                              
        total stockholders’ equity attributable to cohen & steers, inc.
      561,953,000 550,292,000 528,501,000 507,687,000 511,711,000 491,009,000 463,173,000 378,940,000 381,228,000 366,594,000 353,152,000 336,982,000 337,554,000                                                    
        nonredeemable noncontrolling interests
      49,090,000 14,380,000 12,570,000 11,955,000 9,732,000 7,052,000 6,661,000 4,982,000 4,956,000 5,583,000 5,237,000 5,363,000 4,054,000                                                    
        total stockholders’ equity
      611,043,000 564,672,000 541,071,000 519,642,000 521,443,000 498,061,000 469,834,000 383,922,000 386,184,000 372,177,000 358,389,000 342,345,000 341,608,000    255,183,000    174,239,000    213,703,000    222,646,000 324,241,000 303,005,000  275,536,000 308,590,000 290,053,000 273,361,000 265,814,000 272,239,000 255,203,000 237,588,000 231,776,000 245,942,000 241,905,000 227,639,000 227,981,000 262,003,000 249,872,000 231,362,000 223,557,000 251,008,000 234,412,000 223,289,000 261,111,000 253,924,000 242,736,000 230,512,000 214,623,000 255,937,000 240,813,000 233,365,000 222,493,000 289,182,000 288,037,000 284,869,000 
        total liabilities, redeemable noncontrolling interests and stockholders’ equity
      876,694,000 801,612,000 751,023,000 834,865,000 812,366,000 727,787,000 784,052,000 680,725,000 736,554,000 673,908,000 624,987,000 623,403,000 673,379,000    492,687,000                                                
        stockholders' equity:
                                                                      
        total stockholders' equity
                   315,630,000 289,385,000 255,365,000  264,541,000 225,888,000 189,227,000  235,754,000 213,543,000 195,504,000  278,901,000 256,375,000 235,161,000    283,843,000                                 
        total liabilities, redeemable noncontrolling interests and stockholders' equity
                   506,332,000 577,374,000 583,210,000  468,593,000 403,169,000                                              
        assets
                                                                      
        deferred income tax asset—net
                         2,065,000 6,995,000 7,073,000 6,902,000 6,836,000 7,091,000 7,119,000 7,178,000 7,130,000 7,200,000 6,686,000 3,845,000 1,794,000 5,812,000 6,705,000 4,450,000  5,619,000 4,040,000 2,176,000 595,000 5,551,000 2,941,000 4,295,000  15,108,000 13,421,000 11,047,000 9,053,000 14,144,000 11,279,000 8,978,000 6,512,000 6,812,000 5,379,000 3,710,000 9,233,000 7,415,000 4,929,000 3,415,000 8,058,000 6,560,000 3,962,000 2,745,000 6,649,000 
        liabilities and stockholders' equity
                                                                      
        accrued compensation
                         19,660,000 52,056,000 36,615,000 22,045,000 12,796,000 48,105,000 37,386,000 23,527,000 11,319,000 43,685,000 31,693,000 20,737,000 10,156,000 41,370,000 30,357,000 19,038,000 9,536,000 35,333,000 26,545,000 15,266,000 6,941,000 30,503,000 22,175,000 15,261,000 6,651,000 28,300,000 21,136,000 13,786,000 6,490,000 25,214,000 19,501,000 13,356,000 7,417,000 22,511,000 13,566,000 5,954,000 23,337,000 19,412,000 12,694,000 5,870,000 20,273,000 13,342,000 8,197,000 3,767,000 12,009,000 
        accumulated other comprehensive loss, net of tax
                         -4,729,000  -6,065,000 -7,422,000 -7,826,000  -9,123,000 -7,223,000 -6,925,000  -6,143,000 -5,843,000 -4,228,000  -3,915,000 -4,511,000 -5,019,000  -2,793,000 -2,755,000 -2,654,000  -11,947,000 -4,809,000                      
        less: treasury stock, at cost, 5,983,474 and 5,674,510 shares at march 31, 2021 and december 31, 2020, respectively
                         -222,018,000                                             
        total liabilities and stockholders' equity
                         333,093,000  397,466,000 368,288,000 333,655,000  459,704,000 404,002,000 405,808,000    428,941,000                                 
        operating lease right-of-use assets
                          31,203,000 33,649,000 33,395,000 35,961,000 38,440,000 40,833,000 43,432,000 45,977,000                                     
        liabilities and stockholders’ equity
                                                                      
        accumulated other comprehensive income, net of tax
                          -4,134,000    -6,326,000    -7,323,000    -3,671,000    -5,885,000    -3,843,000   -3,775,000 -1,582,000 831,000 3,593,000 3,080,000 2,989,000 3,119,000 1,603,000 2,984,000 887,000 350,000 2,154,000 -225,000 -574,000 5,911,000 4,464,000 2,971,000 4,537,000 233,000 10,071,000 11,119,000 
        less: treasury stock, at cost, 5,674,510 and 5,329,820 shares at december 31, 2020 and 2019, respectively
                          -200,762,000                                            
        total liabilities and stockholders’ equity
                          348,453,000    402,419,000    432,551,000 488,185,000 450,116,000  410,125,000 423,999,000 397,883,000 319,540,000 333,728,000 331,493,000 297,070,000 278,280,000 305,322,000 296,023,000 277,011,000 255,002,000 280,721,000 327,334,000 293,130,000 274,231,000 274,926,000 297,111,000 353,201,000 354,336,000 365,916,000 335,785,000 318,150,000 286,233,000 258,108,000 293,811,000 271,785,000 277,586,000 253,636,000 312,050,000 308,961,000 328,711,000 
        less: treasury stock, at cost, 5,674,510 and 5,329,820 shares at september 30, 2020 and december 31, 2019, respectively
                           -200,762,000                                           
        less: treasury stock, at cost, 5,674,168 and 5,329,820 shares at june 30, 2020 and december 31, 2019, respectively
                            -200,740,000                                          
        less: treasury stock, at cost, 5,673,028 and 5,329,820 shares at march 31, 2020 and december 31, 2019, respectively
                             -200,672,000                                         
        less: treasury stock, at cost, 5,329,820 and 5,050,285 shares at december 31, 2019 and 2018, respectively
                              -174,825,000                                        
        less: treasury stock, at cost, 5,329,820 and 5,050,285 shares at september 30, 2019 and december 31, 2018, respectively
                               -174,825,000                                       
        less: treasury stock, at cost, 5,329,386 and 5,050,285 shares at june 30, 2019 and december 31, 2018, respectively
                                -174,802,000                                      
        less: treasury stock, at cost, 5,328,768 and 5,050,285 shares at march 31, 2019 and december 31, 2018, respectively
                                 -174,770,000                                     
        deferred rent
                                  5,816,000 5,863,000 5,877,000 5,934,000 5,994,000 6,054,000 6,113,000 6,172,000 6,229,000 6,290,000 6,353,000 6,410,000 6,368,000 6,089,000 5,885,000 5,677,000 5,728,000 5,778,000 5,830,000         1,679,000 1,817,000 1,959,000 2,097,000 2,209,000 2,314,000 2,430,000 2,560,000 2,656,000 
        less: treasury stock, at cost, 5,050,285 and 4,789,608 shares at december 31, 2018 and 2017, respectively
                                  -164,417,000                                    
        redeemable noncontrolling interest
                                   84,828,000 84,995,000 81,604,000 47,795,000 46,076,000 45,419,000 975,000 853,000 868,000 891,000 689,000 11,334,000 720,000 852,000 797,000 607,000 19,766,000 7,406,000 1,843,000 207,000 192,000 72,609,000 70,684,000 46,769,000 32,924,000 28,477,000 4,796,000 436,000 3,379,000 3,804,000   1,952,000  3,466,000 
        less: treasury stock, at cost, 5,050,285 and 4,789,608 shares at september 30, 2018 and december 31, 2017, respectively
                                   -164,417,000                                   
        less: treasury stock, at cost, 5,049,225 and 4,789,608 shares at june 30, 2018 and december 31, 2017, respectively
                                    -164,372,000                                  
        less: treasury stock, at cost, 5,048,878 and 4,789,608 shares at march 31, 2018 and december 31, 2017, respectively
                                     -164,323,000                                 
        trading investments
                                      74,856,000 74,684,000 73,556,000 15,162,000 12,689,000 12,742,000 12,823,000 12,778,000 37,169,000 12,851,000 8,863,000 9,395,000 9,509,000                    
        equity method investments
                                      6,176,000 5,986,000 5,892,000 6,170,000 6,459,000 21,378,000 21,402,000 31,914,000 16,974,000 6,309,000 7,447,000 27,465,000 28,550,000 107,000 26,634,000 25,637,000 24,724,000 24,301,000               
        available-for-sale investments
                                      27,074,000 26,187,000 28,257,000 38,843,000 35,396,000 25,519,000 30,931,000 18,144,000 17,191,000 30,531,000 38,420,000 21,320,000 21,269,000                    
        less: treasury stock, at cost, 4,789,608 and 4,524,694 shares at december 31, 2017 and 2016, respectively
                                      -153,818,000                                
        less: treasury stock, at cost, 4,789,608 and 4,524,694 shares at september 30, 2017 and december 31, 2016, respectively
                                       -153,818,000                               
        less: treasury stock, at cost, 4,787,883 and 4,524,694 shares at june 30, 2017 and december 31, 2016, respectively
                                        -153,749,000                              
        deferred income tax liability—net
                                         54,000                             
        less: treasury stock, at cost, 4,787,094 and 4,524,694 shares at march 31, 2017 and december 31, 2016, respectively
                                         -153,717,000                             
        less: treasury stock, at cost, 4,524,694 and 4,250,476 shares at december 31, 2016 and december 31, 2015, respectively
                                          -144,677,000                            
        due from broker
                                           2,387,000 1,923,000 964,000 6,104,000 6,111,000 1,784,000 1,315,000 1,805,000 5,063,000 4,071,000 2,681,000 2,906,000               28,234,000 
        due to broker
                                           577,000 27,000 49,000 4,369,000 4,497,000                       
        less: treasury stock, at cost, 4,524,694 and 4,250,476 shares at september 30, 2016 and december 31, 2015, respectively
                                           -144,677,000                           
        less: treasury stock, at cost, 4,522,272 and 4,250,476 shares at june 30, 2016 and december 31, 2015, respectively
                                            -144,574,000                          
        less: treasury stock, at cost, 4,508,617 and 4,250,476 shares at march 31, 2016 and december 31, 2015, respectively
                                             -144,012,000                         
        less: treasury stock, at cost, 4,250,476 and 3,800,920 shares at december 31, 2015 and december 31, 2014, respectively
                                              -136,637,000                        
        income tax receivable
                                               4,033,000 10,839,000 5,839,000               543,000     777,000 
        less: treasury stock, at cost, 4,250,476 and 3,800,920 shares at september 30, 2015 and december 31, 2014, respectively
                                               -136,637,000                       
        less: treasury stock, at cost, 4,248,788 and 3,800,920 shares at june 30, 2015 and december 31, 2014, respectively
                                                -136,583,000                      
        goodwill
                                                 17,862,000 19,120,000 19,611,000 20,591,000 20,675,000 20,672,000 20,448,000 19,950,000 19,782,000 19,824,000 19,666,000 20,245,000 19,934,000 20,337,000 21,337,000 21,053,000 20,334,000 20,552,000 19,255,000 20,441,000 21,196,000 
        intangible assets—net
                                                 1,590,000 1,612,000 1,635,000 1,657,000 1,679,000 1,701,000 1,724,000 1,746,000 1,768,000 1,813,000 1,835,000 1,857,000 1,879,000 1,902,000 1,924,000 1,946,000 1,968,000 1,991,000 2,013,000 2,035,000 2,057,000 
        less: treasury stock, at cost, 4,236,934 and 3,800,920 shares at march 31, 2015 and december 31, 2014, respectively
                                                 -136,112,000                     
        less: treasury stock, at cost, 3,800,920 and 3,481,942 shares at december 31, 2014 and december 31, 2013, respectively
                                                  -117,403,000                    
        securities owned
                                                   59,376,000 49,822,000 17,855,000 15,668,000        5,877,000 10,146,000 9,627,000   11,160,000  17,621,000 
        investments, available-for-sale
                                                   21,814,000 7,328,000 6,932,000 10,449,000 13,539,000 14,010,000 25,747,000 24,383,000 26,112,000 25,786,000 27,133,000 25,657,000 19,450,000 20,181,000 16,954,000 29,949,000 25,560,000 46,242,000 45,758,000 
        less: treasury stock, at cost, 3,800,014 and 3,481,942 shares at september 30, 2014 and december 31, 2013, respectively
                                                   -117,366,000                   
        less: treasury stock, at cost, 3,797,741 and 3,481,942 shares at june 30, 2014 and december 31, 2013, respectively
                                                    -117,268,000                  
        dividend payable
                                                     9,848,000    8,851,000   7,875,000    6,471,000      
        less: treasury stock, at cost, 3,773,060 and 3,481,942 shares at march 31, 2014 and december 31, 2013, respectively
                                                     -116,274,000                 
        securities sold but not yet purchased
                                                                     16,118,000 
        less: treasury stock, at cost, 3,481,942 and 3,239,093 shares at december 31, 2013 and december 31, 2012, respectively
                                                      -105,681,000                
        securities owned (26,002)* (8,499 and 849)**
                                                       11,507,000               
        due from broker (12,358)*
                                                       1,838,000 31,561,000              
        other assets (103)*
                                                       6,517,000 7,295,000              
        securities sold but not yet purchased (14,685)*
                                                                      
        other liabilities and accrued expenses (335)*
                                                       17,564,000 23,078,000              
        less: treasury stock, at cost, 3,481,712 and 3,239,093 shares at september 30, 2013 and december 31, 2012, respectively
                                                       -105,673,000               
        securities owned (26,002)* (12,357 and 849)**
                                                        99,638,000              
        equity investments
                                                        7,532,000 8,349,000 7,770,000 8,554,000 8,676,000 7,868,000 33,506,000 38,755,000 38,127,000 43,979,000 41,313,000 40,766,000 37,542,000  
        less: treasury stock, at cost, 3,480,161 and 3,239,093 shares at june 30, 2013 and december 31, 2012 respectively
                                                        -105,621,000              
        securities owned (25,955 and 26,002)* (935 and 849)**
                                                         113,630,000             
        due from broker (10,956 and 12,358)*
                                                         25,591,000             
        other assets (73 and 103)*
                                                         6,265,000             
        securities sold but not yet purchased (12,536 and 14,685)*
                                                         12,536,000             
        other liabilities and accrued expenses (309 and 335)*
                                                         26,409,000             
        less: treasury stock, at cost, 3,477,413 and 3,239,093 shares at march 31, 2013 and december 31, 2012 respectively
                                                         -105,517,000             
        securities owned (24,946 and 21,952)*
                                                          91,441,000            
        due from broker (10,064 and 10,321)*
                                                          14,234,000            
        other assets (310 and 209)*
                                                          7,812,000            
        securities sold but not yet purchased (12,598 and 9,277)*
                                                          12,598,000            
        other liabilities and accrued expenses (226 and 493)*
                                                          20,343,000            
        less: treasury stock, at cost, 3,238,859 and 2,986,913 shares at september 30, 2012 and december 31, 2011 respectively
                                                          -97,712,000            
        securities owned (26,655 and 21,952)*
                                                           76,886,000           
        due from broker (10,259 and 10,321)*
                                                           14,330,000           
        other assets (256 and 209)*
                                                           5,768,000           
        securities sold but not yet purchased (12,304 and 9,277)*
                                                           12,305,000           
        other liabilities and accrued expenses (370 and 493)*
                                                           17,289,000           
        less: treasury stock, at cost, 3,236,252 and 2,986,913 shares at june 30, 2012 and december 31, 2011 respectively
                                                           -97,624,000           
        securities owned (26,006 and 21,952) *
                                                            76,253,000          
        due from broker (13,124 and 10,321) *
                                                            20,554,000          
        other assets (461 and 209) *
                                                            5,987,000          
        securities sold but not yet purchased (14,373 and 9,277) *
                                                            14,373,000          
        other liabilities and accrued expenses (330 and 493) *
                                                            16,620,000          
        less: treasury stock, at cost, 3,233,524 and 2,986,913 shares at march 31, 2012 and december 31, 2011, respectively
                                                            -97,533,000          
        securities owned (21,952) *
                                                             25,304,000         
        due from broker (10,321) *
                                                             10,443,000         
        other assets (209) *
                                                             5,825,000         
        securities sold but not yet purchased (9,277) *
                                                             9,277,000         
        other liabilities and accrued expenses (493) *
                                                             11,684,000         
        less: treasury stock, at cost, 2,986,913 and 2,754,696 shares at december 31, 2011 and december 31, 2010, respectively
                                                             -89,235,000         
        less: treasury stock, at cost, 2,986,308 and 2,754,696 shares at september 30, 2011 and december 31, 2010, respectively
                                                              -89,218,000        
        less: treasury stock, at cost, 2,981,392 and 2,754,696 shares at june 30, 2011 and december 31, 2010, respectively
                                                               -89,042,000       
        deferred commissions—net
                                                                961,000 785,000 674,000 573,000 562,000 523,000 
        less: treasury stock, at cost, 2,976,985 and 2,754,696 shares at march 31, 2011 and december 31, 2010, respectively
                                                                -88,911,000      
        less: treasury stock, at cost, 2,754,696 and 2,594,982 shares at december 31, 2010 and 2009, respectively
                                                                 -82,588,000     
        less: treasury stock, at cost, 2,754,265 and 2,594,982 shares at september 30, 2010 and december 31, 2009, respectively
                                                                  -82,576,000    
        retained earnings
                                                                   6,447,000   
        less: treasury stock, at cost, 2,748,404 and 2,594,982 shares at june 30, 2010 and december 31, 2009, respectively
                                                                   -82,449,000   
        dividends payable
                                                                    4,262,000  
        less: treasury stock, at cost, 2,734,870 and 2,594,982 shares at march 31, 2010 and december 31, 2009, respectively
                                                                    -82,113,000  
        equity investment
                                                                     10,842,000 
        (accumulated deficit) retained earnings
                                                                     -5,382,000 
        less: treasury stock, at cost, 2,594,982 and 2,422,139 shares at december 31, 2009 and 2008, respectively
                                                                     -79,202,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-12-31 2025-09-30 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 2012-09-30 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 
                                                                       
          cash flows from operating activities:
                                                                       
          net income
        30,703,000 41,634,000 41,772,000 43,289,000 43,018,000 55,283,000 30,077,000 34,414,000 42,637,000 25,169,000 32,505,000 36,298,000 36,882,000 39,614,000 26,149,000 46,841,000 69,931,000 51,387,000 52,406,000 52,430,000 929,000 34,006,000 32,162,000 8,068,000 37,960,000 36,398,000 32,649,000 39,977,000 25,298,000 29,731,000 25,569,000 28,924,000 20,806,000 25,738,000 22,998,000 22,944,000 26,191,000 23,831,000 24,921,000 17,867,000 5,828,000 16,964,000 20,774,000 20,771,000 15,173,000 18,037,000 22,924,000 19,600,000 19,428,000 19,817,000 8,509,000 15,501,000 12,567,000 15,027,000 18,258,000 16,074,000 9,542,000 15,759,000 12,902,000 12,751,000 13,163,000 11,601,000 8,890,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                                       
          stock-based compensation expense—net
        10,085,000 12,337,000 12,161,000 11,379,000 10,869,000 14,515,000 13,919,000 12,998,000 11,134,000 10,924,000 11,712,000 10,698,000 12,890,000 12,323,000 12,382,000 11,757,000 9,471,000 10,213,000 11,432,000 9,348,000 7,335,000 7,441,000 7,591,000 6,970,000                                        
          depreciation and amortization
        3,058,000 2,997,000 2,828,000 2,831,000 2,870,000 2,741,000 2,889,000 2,669,000 2,757,000 36,000 1,119,000 1,230,000 1,407,000 1,432,000 1,345,000 1,368,000 -6,356,000 3,975,000 6,904,000 1,167,000 1,128,000 1,144,000 1,228,000 1,152,000 1,079,000 1,100,000 1,115,000 1,102,000 1,068,000 1,138,000 1,205,000 1,062,000 1,527,000 1,698,000 1,827,000 2,065,000 2,016,000 2,004,000 1,693,000 1,897,000 1,513,000 1,545,000 2,103,000 1,052,000 1,169,000 1,090,000 1,103,000 1,262,000 1,496,000 1,423,000 1,340,000 1,347,000 1,384,000 1,438,000 1,396,000 1,296,000 1,279,000 1,295,000 1,186,000 1,138,000 1,126,000 1,113,000 1,154,000 
          non-cash lease expense
        1,307,000 1,318,000 1,404,000 1,225,000 1,160,000                                                           
          loss from investments—net
        2,248,000 -692,000 -6,715,000 -3,553,000 1,359,000 -18,975,000 2,018,000 -984,000 -14,299,000 10,056,000 -356,000 308,000 -5,820,000 5,920,000 28,573,000 -3,567,000 -6,865,000 418,000 -7,778,000 -4,559,000 -7,315,000 -3,279,000 -7,317,000 22,027,000 -1,463,000 -4,472,000 -1,874,000 -13,864,000 9,572,000 -413,000 603,000 4,502,000                                
          deferred income taxes
        -1,429,000 -1,488,000 -2,231,000 5,709,000 -396,000 -1,058,000 -3,007,000 4,164,000 8,531,000 -8,474,000 -2,889,000 3,369,000 246,000 -3,279,000 -1,652,000 3,486,000 -1,709,000 -2,325,000 -781,000 4,919,000 64,000 -179,000 -59,000 281,000 -12,000 74,000 -24,000 58,000 -500,000 -2,856,000 -2,005,000 3,988,000 819,000 -2,276,000 -4,263,000 5,406,000 -1,725,000 -1,736,000 -1,505,000 4,066,000 -2,505,000 1,436,000 -4,418,000 12,879,000 -926,000 -2,292,000 -1,889,000 4,828,000 -1,977,000 -2,202,000 -2,379,000 3,471,000 -1,362,000 -1,597,000 4,913,000 -1,763,000 -1,589,000 -1,462,000 4,399,000 -1,473,000 -1,005,000 -1,192,000 3,893,000 
          foreign currency loss
        81,000 -914,000 1,050,000 902,000 3,103,000 -2,309,000 -626,000 1,070,000 -1,396,000 36,000 690,000 -117,000 -1,187,000 312,000 1,488,000 974,000 -471,000 350,000 1,036,000 1,059,000 -710,000 -314,000 -403,000 158,000 49,000 118,000 19,000 -177,000 -545,000 1,525,000 367,000 -1,136,000 -31,000 174,000              760,000   -820,000 1,750,000   953,000    2,000    117,000 
          amortization of premium (discount) on u.s. treasury securities—net
        59,000 -354,000   256,000 -1,410,000                                                          
          changes in operating assets and liabilities:
                                                                       
          accounts receivable
        -11,729,000 4,444,000 5,878,000 -3,893,000 1,181,000 -11,097,000 10,688,000 -7,510,000 2,796,000 -7,108,000 9,140,000 -6,254,000 9,838,000 -3,442,000 12,221,000 -6,307,000 5,523,000 -10,740,000 -7,831,000 -3,336,000 -1,876,000 -14,785,000 12,067,000 -4,716,000 6,464,000 -11,370,000 5,592,000 -9,415,000 10,274,000 -11,049,000 12,063,000 -8,026,000 8,518,000 -11,880,000 9,589,000 -13,840,000 12,965,000 -14,494,000 6,410,000 -8,294,000 7,922,000 -7,996,000 10,041,000 -10,691,000 9,944,000 -10,694,000 8,178,000 -9,344,000 11,529,000 -6,346,000 12,306,000 -14,602,000 -12,195,000 6,961,000 -14,947,000 11,178,000 -10,827,000 2,721,000 -9,012,000 2,157,000 -8,777,000 3,722,000 -6,229,000 
          due from brokers
        724,000 -441,000 -10,045,000 -2,960,000 787,000 -23,596,000 13,040,000 -11,804,000 -1,918,000 -213,000 -192,000 -282,000 814,000 531,000 56,452,000 -59,429,000 -431,000 4,059,000 -1,133,000 -956,000 -2,682,000 -1,946,000 -352,000 1,598,000 1,934,000 -994,000 1,274,000 -1,225,000 -7,990,000 5,185,000 355,000 -5,361,000 138,000 7,885,000                              
          investments held by consolidated funds
                                                                       
          other assets
        1,293,000 515,000 450,000 -2,704,000 -857,000 -134,000 -483,000 -3,284,000 2,644,000 -2,830,000 -1,338,000 -5,744,000 1,337,000 -2,907,000 2,595,000 4,204,000 4,531,000 -81,000 2,862,000 -2,978,000 423,000 5,355,000 -4,206,000 -2,343,000 3,405,000 -3,661,000 3,433,000 -3,297,000 -524,000 -690,000 262,000 -1,737,000 -87,000 -263,000 -182,000 -44,000 -1,654,000 854,000 121,000 -763,000 -1,066,000 707,000 397,000 -1,304,000 1,276,000 1,545,000 -2,436,000 424,000 -752,000 1,298,000 -248,000 1,244,000 -1,726,000 324,000 107,000 -425,000 -521,000 -338,000 -313,000 498,000 194,000 -839,000 693,000 
          accrued compensation and benefits
        20,642,000 20,025,000 19,984,000 -51,086,000 22,370,000 15,712,000 15,806,000 -49,221,000 16,393,000 18,502,000 14,923,000 -61,200,000 15,393,000 17,703,000 19,918,000 -54,417,000 14,939,000 21,288,000                                              
          distribution and service fees payable
        -75,000 361,000 143,000 -291,000 171,000 -737,000 1,330,000 -2,423,000 834,000 750,000 -1,045,000 1,184,000 -1,303,000 -2,232,000 2,033,000 -260,000 -1,088,000 1,034,000 1,639,000 850,000 1,026,000 -755,000 1,448,000 -1,289,000 -1,185,000 1,700,000 -57,000 -1,633,000 -27,000 2,159,000 -413,000 543,000 -1,693,000 835,000 641,000 -4,000 -655,000 1,042,000 272,000 -399,000                        
          operating lease liabilities
        -1,899,000 -1,403,000 -1,495,000 -1,492,000 1,050,000 -1,257,000 -1,550,000 826,000 -253,000 21,998,000 -1,479,000 -1,067,000 -2,887,000 -3,015,000 -3,049,000 -2,984,000 -2,929,000 -2,897,000 -2,866,000 -2,858,000 -5,634,000 -47,000 -2,871,000 -2,762,000 -2,698,000 -2,798,000 -2,739,000 -2,720,000                                    
          due to brokers
        225,000 -1,636,000 3,828,000 2,574,000 1,388,000 23,311,000 -16,535,000 16,917,000 -2,543,000 1,442,000 26,000 1,184,000 -4,395,000 2,687,000 -40,006,000 44,760,000 -1,606,000 -846,000 3,269,000 -367,000 208,000 231,000 -20,000 -284,000 -1,267,000 -368,000 1,363,000 317,000 1,328,000 -1,682,000 -1,662,000 3,855,000  -8,097,000                              
          income tax payable
        232,000 4,515,000 -11,864,000 2,053,000 3,087,000 2,726,000 -11,479,000 5,504,000 -3,988,000 11,141,000 -13,411,000 3,515,000 -239,000 2,271,000 -21,591,000 4,523,000 1,544,000 5,584,000 4,547,000 -1,684,000 -10,886,000 -10,189,000 10,467,000 968,000 2,040,000 1,513,000 -8,702,000 8,680,000 -290,000 4,644,000 -8,692,000 3,109,000 7,530,000 3,779,000 -7,323,000 6,531,000 178,000 3,392,000 -7,038,000 5,578,000 5,272,000 123,000 238,000 -402,000 830,000 1,894,000 -5,936,000 192,000 -1,271,000 -900,000 4,604,000 -3,459,000 -3,182,000 3,656,000 -2,264,000 -2,813,000 -112,000 5,036,000 -6,499,000 3,486,000 2,455,000 -483,000 1,599,000 
          other liabilities and accrued expenses
        475,000 -4,206,000 1,363,000 1,757,000 -3,897,000 -5,484,000 4,176,000 -11,171,000 1,642,000 -1,345,000 -2,410,000 3,507,000 -1,166,000 1,948,000 -84,000 855,000 -4,831,000 1,001,000 1,747,000 -5,594,000 3,381,000 546,000 -3,031,000 -459,000 103,000 4,685,000 1,473,000 -5,454,000 3,125,000 1,105,000 -948,000 647,000 1,064,000 -387,000 2,850,000 -2,581,000 1,140,000 1,317,000 -250,000 15,000 746,000 2,748,000 -971,000 -1,077,000 28,000 621,000 3,483,000 -2,792,000 516,000 9,292,000 -3,753,000 7,638,000 2,344,000 1,042,000 3,203,000 -2,460,000 2,913,000 1,392,000 -2,684,000 2,839,000 884,000 512,000 -558,000 
          net cash from operating activities
        1,058,000 55,083,000 -67,637,000 -108,948,000 34,827,000 25,625,000 31,374,000 4,863,000 58,577,000 74,669,000 53,681,000 -14,966,000 58,033,000 52,417,000 57,679,000 -106,449,000 71,935,000 80,943,000 81,110,000 8,913,000 1,998,000 31,587,000 61,154,000 -5,553,000 67,667,000 27,871,000 75,410,000 -29,503,000 33,275,000 33,259,000 35,136,000 -29,072,000 53,608,000 32,201,000 -19,744,000 -1,812,000 54,200,000 30,070,000 33,219,000 -2,531,000 21,442,000 32,173,000 35,839,000 342,000 35,661,000 16,083,000 2,933,000 -95,000 34,790,000 41,497,000 26,028,000 -26,443,000 -5,267,000 39,794,000 -56,267,000 28,659,000 19,980,000 34,442,000 -10,636,000 26,944,000 12,867,000 9,230,000 4,999,000 
          capital expenditures
        -282,000 -2,488,000 -2,134,000 -1,075,000 -1,678,000 -1,408,000 -4,239,000 -4,326,000 -10,847,000 -26,008,000 -15,545,000 -4,586,000 -1,275,000 -1,386,000 -881,000 -681,000 -815,000 -996,000 -453,000 -431,000 -540,000 -398,000 -721,000 -843,000 -555,000 -614,000 -594,000 -989,000 -966,000 -751,000 -847,000 -906,000 -801,000 -889,000 -903,000 -649,000 -2,829,000 -2,121,000 -3,785,000 -1,448,000 -787,000 -827,000  -1,027,000 -2,728,000 -1,456,000 -705,000 -1,903,000 -1,501,000 -1,410,000 -1,416,000 -798,000 -505,000 -1,054,000 -708,000 -984,000 -500,000 -735,000 -1,140,000 -945,000 -363,000 -406,000 
          free cash flows
        776,000 52,595,000 -69,771,000 -110,023,000 33,149,000 24,217,000 27,135,000 537,000 47,730,000 48,661,000 38,136,000 -19,552,000 56,758,000 51,031,000 56,798,000 -107,130,000 71,120,000 79,947,000 80,657,000 8,482,000 1,458,000 31,189,000 60,433,000 -6,396,000 67,112,000 27,257,000 74,816,000 -30,492,000 32,309,000 32,508,000 34,289,000 -29,978,000 52,807,000 31,312,000 -20,647,000 -2,461,000 51,371,000 27,949,000 29,434,000 -3,979,000 20,655,000 31,346,000 35,839,000  34,634,000 13,355,000 1,477,000 -800,000 32,887,000 39,996,000 24,618,000 -27,859,000 -6,065,000 39,289,000 -57,321,000 27,951,000 18,996,000 33,942,000 -11,371,000 25,804,000 11,922,000 8,867,000 4,593,000 
          cash flows from investing activities:
                                                                       
          purchases of investments
        -77,818,000 -143,822,000 -85,447,000 -76,329,000 -79,582,000 -104,917,000 -139,400,000 -93,560,000 -37,197,000 -86,989,000 -6,680,000 -38,536,000 -12,854,000 -58,625,000 -37,388,000 -36,478,000 -9,644,000 -11,187,000 -15,795,000 -17,417,000 -12,284,000 -49,924,000 879,000 -9,634,000 -3,167,000 -29,045,000 5,965,000 -24,696,000 -2,862,000 -53,350,000 -3,489,000 -3,856,000                                
          proceeds from sales and maturities of investments
        117,180,000 111,054,000 90,112,000 79,405,000 104,370,000 67,246,000 69,257,000 68,525,000 61,301,000 16,186,000 26,010,000 8,115,000 56,181,000 58,703,000 25,040,000 6,787,000 20,839,000 11,303,000 15,196,000 57,048,000 20,630,000 44,324,000 4,343,000 2,392,000  26,450,000 9,590,000 34,420,000                                    
          purchases of property and equipment
        -282,000 -2,488,000 -2,134,000 -1,075,000 -1,678,000 -1,408,000 -4,239,000 -4,326,000 -10,847,000 -26,008,000 -15,545,000 -4,586,000 -1,275,000 -1,386,000 -881,000 -681,000 -815,000 -996,000 -453,000 -431,000 -540,000 -398,000 -721,000 -843,000 -555,000 -614,000 -594,000 -989,000 -966,000 -751,000 -847,000 -906,000 -801,000 -889,000 -903,000 -649,000 -2,829,000 -2,121,000 -3,785,000 -1,448,000 -787,000 -827,000   -1,027,000 -2,728,000 -1,456,000 -705,000 -1,903,000 -1,501,000 -1,410,000 -1,416,000 -798,000 -505,000 -1,054,000 -708,000 -984,000 -500,000 -735,000 -1,140,000 -945,000 -363,000 -406,000 
          net cash from investing activities
        39,080,000 -35,256,000 2,531,000 2,001,000 23,110,000 -39,079,000 -74,382,000 -29,361,000 13,257,000 -96,811,000 3,785,000 -35,007,000 42,052,000 -1,308,000 -13,229,000 -30,372,000 10,380,000 -880,000 -1,052,000 39,200,000 7,812,000 -6,071,000 4,501,000 -8,012,000 15,428,000 -3,179,000 14,961,000 8,739,000 -1,176,000 -47,836,000 -1,439,000 -2,743,000 -1,074,000 1,065,000 9,166,000 -3,448,000 1,906,000 4,656,000 -2,081,000 -1,583,000 -817,000 339,000 914,000 -39,000 -1,088,000 7,944,000 -848,000 3,827,000 2,532,000 5,335,000 9,992,000 157,000 2,078,000 1,406,000 155,000 11,265,000 -10,965,000 490,000 -3,825,000 12,751,000 7,977,000 11,568,000 -25,000 
          cash flows from financing activities:
                                                                       
          proceeds from issuance of common stock under employee stock purchase plan
        182,000 200,000 250,000 329,000 189,000 257,000                                                          
          proceeds from issuance of common stock from offering, net of issuance costs
                                                                     
          repurchase of common stock for employee tax withholding
        -1,560,000 -258,000 -621,000 -25,977,000 -1,540,000 -68,000 -134,000 -19,364,000                                                        
          dividends to stockholders
        -31,754,000 -31,747,000 -31,713,000 -31,710,000 -29,996,000 -29,984,000 -29,900,000 -29,301,000 -28,087,000 -28,157,000 -28,101,000 -28,101,000 -26,844,000 -26,840,000 -26,836,000 -26,832,000 -82,331,000 -21,766,000 -21,732,000 -21,726,000 -66,518,000 -18,661,000 -18,657,000 -18,653,000 -111,637,000 -17,027,000 -17,026,000 -17,015,000 -132,534,000 -15,452,000 -15,448,000 -15,445,000 -59,369,000 -12,984,000 -12,981,000 -12,979,000 -34,950,000 -11,955,000 -11,950,000 -11,970,000 -34,099,000 -11,364,000 -11,360,000 -11,354,000 -54,675,000 -9,858,000   -53,137,000 -8,855,000   -7,875,000   -6,482,000 -49,680,000   -4,269,000 -89,608,000   
          net contributions (distributions) from noncontrolling interests
        40,715,000 15,222,000 125,891,000 46,830,000 44,453,000 33,356,000 27,034,000 -15,938,000 8,897,000 5,918,000 -2,584,000 2,239,000                                                    
          other
        -427,000 -15,000 -15,000                                                        
          net cash from financing activities
        7,583,000 -17,010,000 93,807,000 -10,543,000 13,106,000 3,561,000 65,761,000 -64,261,000 -19,892,000 -22,060,000 -30,581,000 -46,519,000 -20,151,000 -9,967,000 445,000 38,648,000 -65,749,000 -21,522,000 -23,660,000 -34,495,000 -66,465,000 -18,246,000 -20,636,000 -43,548,000 -112,444,000 2,961,000 -44,485,000 -16,162,000 -102,819,000 -14,473,000 -7,558,000 6,740,000 -57,958,000 -12,919,000 32,091,000 -21,637,000 -34,871,000 -11,895,000 -12,244,000 -15,532,000 -23,259,000 -11,314,000 -11,582,000 -24,954,000 -46,329,000 2,700,000 -15,649,000 -6,337,000 -53,042,000 -11,173,000 -8,964,000 11,424,000 3,693,000 -10,205,000 18,084,000 -6,413,000 -53,464,000 -12,960,000 -4,713,000 -4,202,000 -87,668,000 -6,832,000 -4,315,000 
          net increase in cash and cash equivalents
        47,721,000 2,817,000 28,701,000 -117,490,000 71,043,000 -9,893,000 22,753,000 -88,759,000 51,942,000 -44,202,000 26,885,000 -96,492,000 79,934,000 41,142,000 44,895,000 -98,173,000 16,566,000 58,541,000 56,398,000 13,618,000 -56,655,000 7,270,000 45,019,000 -57,113,000 -29,349,000 27,653,000 45,886,000 -36,926,000 -70,720,000 -29,050,000 26,139,000 -25,075,000 -5,424,000 20,347,000   21,235,000 22,831,000   -2,634,000 21,198,000   -11,756,000 26,727,000   -15,720,000 35,659,000        21,972,000 -19,174,000 35,493,000 -66,824,000 13,966,000 659,000 
          effect of foreign exchange rate changes on cash and cash equivalents
        256,000 80,000 886,000 471,000 -3,573,000 2,798,000 -102,000 -708,000 2,032,000 -1,320,000 635,000 1,409,000 3,539,000 -3,453,000 -3,143,000 -1,383,000 318,000 -1,298,000 114,000 -133,000 1,582,000 900,000 156,000 -1,279,000 2,373,000 -1,434,000 -163,000 579,000 -1,007,000 -219,000 -1,054,000 267,000 3,000 112,000 216,000 348,000 -1,118,000 -398,000 -1,124,000 -168,000 -885,000 -758,000 1,143,000 -794,000 -1,113,000 -1,248,000 147,000 73,000                
          cash and cash equivalents, beginning of the year
                                                                       
          cash and cash equivalents, end of the year
                                                                       
          investments in consolidated funds
         -21,929,000 -126,930,000 -115,281,000                                                            
          cash and cash equivalents, beginning of the period
         183,162,000  189,603,000  248,714,000  983,000 184,373,000  41,232,000  101,352,000  92,733,000  193,452,000  183,234,000  142,728,000  124,938,000  128,277,000  95,412,000 127,824,000  136,191,000  153,002,000 
          cash and cash equivalents, end of the period
         2,897,000 29,587,000 66,143,000  -7,095,000 22,651,000 100,136,000  -45,522,000 27,520,000 153,631,000  38,672,000 41,752,000 84,817,000  57,243,000 56,512,000 54,717,000  8,170,000 45,175,000 42,960,000  26,219,000 45,723,000 56,386,000  -29,269,000 25,085,000 168,644,000  20,459,000 21,729,000 156,685,000  22,433,000 17,770,000 122,914,000  20,440,000 26,314,000 99,493,000  25,479,000 -13,417,000 125,745,000  36,380,000 27,193,000 80,272,000 967,000 29,668,000 90,605,000  -45,459,000 22,988,000 117,683,000  -64,711,000 12,785,000 152,745,000 
          amortization of premium (discount) on u.s. treasury securities
           593,000    -422,000                                                        
          investments within consolidated funds
                             -23,000 2,579,000 -2,011,000 1,657,000 -17,482,000 20,371,000 -18,543,000 -26,340,000 -12,500,000 -8,285,000 -34,057,000                                
          investments within consolidated investment vehicles
             -23,747,000 -30,739,000 11,046,000 -7,085,000 -9,293,000 2,695,000 -5,577,000 -7,436,000 -20,162,000                                                  
          amortization of right-of-use assets
              1,357,000 2,074,000 2,645,000 3,878,000 3,991,000 3,982,000 3,659,000 2,713,000 2,744,000 2,682,000    2,557,000 5,337,000 -254,000 2,566,000 2,479,000 2,393,000 2,599,000 2,545,000 2,511,000                                    
          issuance of common stock—net
               357,000 156,000 229,000 291,000 387,000 162,000 201,000 305,000 375,000 145,000 227,000 264,000 365,000 149,000 192,000 259,000 259,000                                        
          repurchase of common stock
                -858,000 -50,000 -187,000 -20,441,000 -944,000 -113,000 -173,000 -25,585,000 -1,225,000 -30,000 -81,000 -21,256,000 -22,000 -68,000 -25,847,000 -23,000 -32,000 -10,353,000 -45,000 -49,000 -10,505,000 -69,000 -32,000 -9,040,000 -103,000 -562,000 -7,375,000 -54,000 -471,000 -18,709,000 -37,000 -98,000 -994,000 -10,593,000 -8,000 -52,000 -104,000 -7,798,000 -88,000 -91,000 -8,298,000 -17,000 -176,000 -131,000 -6,323,000 -12,000 -127,000 -336,000 -2,911,000 
          debt issuance costs
                 -603,000                                                    
          net contributions (distributions) from redeemable noncontrolling interests
                     16,785,000 27,149,000 90,690,000                                                
          deferred commissions
                       -180,000 -320,000 -380,000 -382,000 -358,000 -399,000 -333,000 -302,000 -440,000 -561,000 -443,000 -325,000 -299,000 -183,000 -207,000 -244,000 -348,000 -493,000 -449,000 -509,000 -443,000 -512,000 -1,277,000 -1,166,000 -954,000 -760,000 -484,000 -660,000 -668,000 -530,000 -505,000 -555,000 -366,000 -303,000 -350,000 -976,000 -770,000 -913,000 -650,000 -765,000 -368,000 -451,000 -577,000 -519,000 -404,000 -345,000 -243,000 -229,000 
          investments within consolidated company-sponsored funds
                       -100,755,000 -17,741,000 -1,097,000 8,000 -8,695,000                                            
          distributions to redeemable noncontrolling interests
                         -147,000 -4,648,000 -733,000 -250,000 -452,000 -3,376,000 -1,946,000 -7,505,000 -3,952,000 -29,041,000 -2,985,000                                    
          contributions from redeemable noncontrolling interests
                         194,000 2,537,000 8,855,000 154,000 697,000 1,206,000 2,639,000 6,576,000 23,757,000 1,475,000 13,917,000                                    
          proceeds from sales of property and equipment
                              73,000                                        
          amortization of deferred commissions
                           347,000 392,000 424,000 442,000 443,000 343,000 267,000 233,000 236,000 294,000 362,000 430,000 473,000            517,000                    
          amortization of premium
                           17,000                                            
          accrued compensation
                           -32,396,000 15,441,000 14,570,000 9,249,000 -35,309,000 10,719,000 13,859,000 12,208,000 -32,366,000 11,992,000 10,956,000 10,581,000 -31,188,000 11,013,000 11,319,000 9,502,000 -25,770,000 8,788,000 11,279,000 8,325,000 -23,537,000 8,328,000 6,914,000 8,610,000 -21,624,000 7,164,000 7,350,000 7,296,000 -18,695,000 5,713,000 6,146,000 5,928,000 -17,939,000 8,944,000 7,612,000 -16,851,000 3,925,000 6,716,000 6,825,000 -14,021,000 6,931,000 5,145,000 4,413,000 -8,097,000 
          amortization of premium (discount) on held-to-maturity investments
                            -14,000 -26,000 -84,000 -84,000 -85,000 -107,000 -242,000 -59,000 -149,000                                   
          investments
                                                                       
          proceeds from redemptions of equity method investments
                                18,000 30,000 4,000                                    
          proceeds from sales of investments
                                    2,652,000 6,254,000 2,897,000 1,993,000                                
          stock-based compensation expense
                                 7,253,000 7,098,000 6,668,000  5,962,000 6,007,000 5,738,000                                
          issuance of common stock
                                 206,000 139,000 274,000 88,000 132,000 158,000 219,000 100,000 133,000 184,000 219,000 117,000 140,000 179,000 206,000 89,000 109,000 141,000 200,000 86,000 110,000 156,000 139,000 72,000 86,000 116,000 134,000 102,000 118,000 137,000 85,000 94,000 118,000 169,000 78,000 90,000 108,000 150,000 
          stock compensation expense
                                        5,423,000 5,629,000 5,389,000 5,328,000 4,816,000 4,841,000 4,920,000 7,072,000 5,563,000 5,196,000 5,937,000 5,990,000 6,396,000 6,340,000 6,263,000 5,932,000 5,353,000 5,434,000 5,874,000 4,878,000 4,060,000 4,579,000 4,462,000 5,771,000 4,319,000 4,382,000 4,203,000 3,796,000 3,819,000 3,814,000 3,671,000 
          deferred rent
                                    -47,000 -14,000 -57,000 -60,000 -60,000 -59,000 -59,000 -57,000 -61,000 -63,000 -57,000 42,000 279,000 204,000 208,000 -51,000 -50,000 -52,000 -46,000 1,532,000 489,000 496,000 489,000 480,000 493,000 -137,000 -130,000 -138,000 -142,000 -138,000 -112,000 -105,000 -116,000 -130,000 -96,000 
          net proceeds (purchases) from redemptions of equity method investments
                                                                       
          distributions to redeemable noncontrolling interest
                                     -95,000 -2,286,000 -1,952,000 -214,000 -38,000 -11,000 -149,000 -12,000 -54,000 -127,000 -3,000    -4,029,000                   
          contributions from redeemable noncontrolling interest
                                     987,000 10,067,000 34,423,000 1,525,000 1,000 44,958,000 174,000 111,000 35,000 143,000 3,734,000 10,668,000 4,000 44,000 235,000 12,301,000 16,720,000 5,437,000 1,820,000 1,213,000 17,608,000 18,890,000 14,054,000 6,620,000 23,444,000        
          proceeds from redemptions of equity method investments—net
                                             153,000 157,000 51,000  4,000  10,440,000 432,000 22,000                
          distributions from equity method investments
                                       26,000                                
          loss from trading investments—net
                                        -1,045,000 -595,000                              
          equity in losses of affiliates—net
                                        -244,000                               
          loss from available-for-sale investments—net
                                        6,000 -235,000                              
          trading investments
                                        873,000 -533,000 -58,392,000 -2,200,000 -164,000 -294,000 972,000 -4,470,000 -25,062,000 -5,374,000 737,000 -337,000                    
          due to broker
                                            -577,000 550,000 -22,000 1,820,000 -128,000                       
          purchases of available-for-sale investments
                                        -1,965,000 -2,384,000 -3,007,000 -9,545,000 -923,000 -3,156,000 -1,889,000 -2,128,000 -1,557,000 -1,174,000 -1,523,000 -1,409,000                    
          proceeds from sales of available-for-sale investments
                                        1,639,000 4,350,000 13,076,000 6,746,000 5,656,000 9,780,000 3,436,000 1,942,000 347,000 2,340,000 3,250,000 1,366,000                    
          excess tax benefits associated with restricted stock units
                                                86,000 -2,000 64,000 4,674,000 25,000 39,000 71,000 2,427,000 31,000 13,000 29,000 1,952,000 26,000 16,000 2,801,000  32,000 9,000 1,441,000     
          net (purchases) proceeds from redemptions of equity method investments
                                                                       
          equity in losses of affiliates
                                                              -772,000   -627,000 14,000     
          (gain) income from trading investments—net
                                           -273,000  376,000                          
          equity in losses (earnings) of affiliates
                                           289,000        1,081,000            -1,614,000        
          (gain) income from available-for-sale investments—net
                                           -35,000                            
          foreign currency gain
                                           1,452,000  40,000 397,000 -1,635,000         309,000    -1,962,000    -596,000    -99,000   
          due from broker
                                           -580,000  -464,000 -959,000 -646,000 7,000 -4,327,000 -469,000 490,000 1,020,000 -992,000 -1,390,000 225,000 -1,068,000 5,330,000 -7,438,000 -5,650,000 1,125,000 4,343,000 -11,817,000    232,000 -700,000 2,487,000 
          net decrease in cash and cash equivalents
                                           -26,897,000    -19,646,000    -24,651,000    -2,605,000    -14,862,000   -38,028,000         
          equity in (earnings) losses of affiliates
                                             -130,000 -2,640,000 -427,000                        
          income tax receivable
                                                 6,806,000 -5,000,000 -5,783,000               -543,000 777,000 
          gain from available-for-sale investments—net
                                              -158,000 30,000   -320,000 -100,000                    
          income from trading investments—net
                                               207,000                        
          foreign currency (gain) loss
                                                -256,000   -852,000                    
          securities sold but not yet purchased
                                                        -12,417,000 -2,268,000 611,000 -3,562,000 5,224,000     -1,171,000 
          gain from seed investments—net
                                                                       
          gain from trading investments—net
                                                  -205,000 451,000                    
          equity in earnings of affiliates
                                                     1,571,000 -1,429,000 -935,000  -313,000 427,000 -536,000        -2,825,000   -541,000 
          proceeds from redemption of equity method investments
                                                                       
          amortization, deferred commissions
                                                     388,000 444,000 545,000 658,000 776,000 810,000 765,000 595,000 545,000 496,000 489,000 497,000 415,000 343,000 293,000 244,000 232,000 190,000 
          (gain) income from trading securities—net
                                                     2,690,000                  
          gain from available-for-sale securities—net
                                                     -760,000 -52,000 -1,076,000 -751,000               
          securities owned
                                                     -12,244,000 -29,205,000 -1,204,000 -3,817,000 4,776,000 3,646,000 -16,178,000 -11,543,000 -2,080,000 -45,325,000 4,542,000 3,357,000 -272,000 -234,000 1,000 8,000 -11,531,000 -1,164,000 
          purchases of investments, available-for-sale
                                                     -2,448,000 -1,504,000 -2,099,000 -2,016,000 -2,715,000 -3,233,000 -2,231,000 -4,631,000 -5,280,000 -8,624,000 -4,713,000 -16,941,000 -4,911,000 -11,046,000 -4,672,000 -5,644,000 -5,039,000 -4,393,000 
          proceeds from sales of investments, available-for-sale
                                                     2,680,000 1,680,000 6,609,000 6,456,000 2,488,000 14,246,000 3,510,000 6,653,000 7,198,000 9,869,000 7,886,000 6,960,000 5,901,000 7,956,000 18,402,000 14,727,000 16,970,000 4,774,000 
          redemptions of redeemable noncontrolling interest
                                                      -615,000 -130,000 -3,578,000 -8,910,000 -1,754,000 -2,526,000           
          gain from trading securities—net
                                                       -983,000 -344,000               
          effect of foreign exchange rate changes
                                                         721,000 137,000 -278,000 463,000 -1,327,000 809,000 -899,000 -1,010,000 1,016,000 666,000     
          income from trading securities - net
                                                                       
          gain from available-for-sale securities - net
                                                          -837,000 -491,000 -437,000 84,000 -687,000  368,000 -232,000 -358,000     
          proceeds from redemptions (purchases) of equity investments
                                                                       
          gain from trading securities - net
                                                           -1,624,000            
          proceeds from redemption (purchases) of equity investments
                                                           294,000            
          (gain) income from trading securities - net
                                                                       
          proceeds from redemption of equity investments
                                                                       
          purchases of equity investments
                                                             -7,000 -36,000         
          loss from trading securities - net
                                                              -1,721,000   99,000 378,000     
          (gain) income from available-for-sale securities - net
                                                                       
          excess (reduction of) tax benefits associated with restricted stock units
                                                                   1,000    
          redemption of redeemable noncontrolling interest
                                                                      
          payment of capital lease obligations
                                                                       
          impairment
                                                                       
          loss from trading securities—net
                                                                       
          loss from investments, available-for-sale—net
                                                                       
          effect of exchange rate changes
                                                                   -121,000 2,113,000 -1,181,000 -916,000 
          loss from trading securities
                                                                      
          loss from investments, available-for-sale
                                                                    -2,124,000   
          reduction of excess tax benefits associated with restricted stock units
                                                                     -35,000 -1,554,000 
          proceeds from redeemable noncontrolling interest
                                                                       
          gain from trading securities
                                                                      -189,000 
          loss from available-for-sale securities
                                                                      -198,000 
          equity in net income of affiliate
                                                                       
          loss from securities owned
                                                                       
          loss from sale of property and equipment
                                                                       
          income tax receivable / payable
                                                                       
          proceeds from sale and maturities of investments, available-for-sale
                                                                       
          proceeds from sale of property and equipment
                                                                       
          (reduction of) increase to excess tax benefits associated with restricted stock units