7Baggers

CVR Partners, LP
(NYSE:UAN) 

UAN stock logo

CVR Partners, LP, together with its subsidiaries, produces and distributes nitrogen fertilizer products in the United States. The company offers ammonia products for agricultural and industrial customers; and urea and ammonium nitrate products to agricultural customers, as well as retailers and dist...

Founded: 2007
Full Time Employees: 286
Sector: Basic Materials
Industry: Agricultural Inputs

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Quarterly
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    Unit: USD2026-03-31 2025-12-31 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 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 
                                                            
      net sales
    180,048,000 131,065,000 163,549,000 168,559,000 142,866,000 139,555,000 125,203,000 132,901,000 127,665,000 141,619,000 130,592,000 183,005,000 226,261,000 212,232,000 156,478,000 244,000,000 222,873,000 188,921,000 144,715,000 138,025,000 60,921,000 90,299,000 79,482,000 105,091,000 75,080,000 86,062,000 88,582,000 137,660,000 91,873,000 98,117,000 79,909,000 93,197,000 79,859,000 78,192,000 69,393,000 97,896,000 85,321,000 84,921,000 78,474,000 119,797,000 73,092,000 66,004,000 49,325,000 80,815,000 93,050,000 74,400,000 66,733,000 77,215,000 80,316,000 84,228,000 69,199,000 78,276,000 87,614,000 77,203,000 80,673,000 57,400 
      yoy
    26.03% -6.08% 30.63% 26.83% 11.91% -1.46% -4.13% -27.38% -43.58% -33.27% -16.54% -25.00% 1.52% 12.34% 8.13% 76.78% 265.84% 109.22% 82.07% 31.34% -18.86% 4.92% -10.27% -23.66% -18.28% -12.29% 10.85% 47.71% 15.04% 25.48% 15.15% -4.80% -6.40% -7.92% -11.57% -18.28% 16.73% 28.66% 59.10% 48.24% -21.45% -11.28% -26.09% 4.66% 15.85% -11.67% -3.56% -1.36% -8.33% 9.10% -14.22% 136269.34%     
      qoq
    37.37% -19.86% -2.97% 17.98% 2.37% 11.46% -5.79% 4.10% -9.85% 8.44% -28.64% -19.12% 6.61% 35.63% -35.87% 9.48% 17.97% 30.55% 4.85% 126.56% -32.53% 13.61% -24.37% 39.97% -12.76% -2.84% -35.65% 49.84% -6.36% 22.79% -14.26% 16.70% 2.13% 12.68% -29.12% 14.74% 0.47% 8.22% -34.49% 63.90% 10.74% 33.81% -38.97% -13.15% 25.07% 11.49% -13.58% -3.86% -4.64% 21.72% -11.60% -10.66% 13.49% -4.30% 140445.30%  
      operating costs and expenses:
                                                            
      cost of materials and other
    29,426,000 20,906,000 25,390,000 32,547,000 27,901,000 26,437,000 26,263,000 26,114,000 25,327,000 33,384,000 31,004,000 33,410,000 36,579,000 30,602,000 29,081,000 40,984,000 30,246,000 28,371,000 26,114,000 26,094,000 17,766,000 23,442,000 21,736,000 21,948,000 23,991,000 22,756,000 21,617,000 26,000,000 23,730,000 27,263,000 19,590,000 19,139,000                         
      direct operating expenses
    63,204,000 81,373,000 57,681,000 60,517,000 54,486,000 55,922,000 55,761,000 46,870,000 55,669,000 63,155,000 58,459,000 55,759,000 57,543,000 51,980,000 109,103,000 48,767,000 60,318,000 60,088,000 48,260,000 53,291,000 37,075,000 44,230,000 38,555,000 40,008,000 35,123,000 45,625,000 47,554,000 45,630,000 34,820,000 37,851,000 35,334,000 47,465,000                         
      depreciation and amortization
    19,963,000 23,008,000 19,958,000 20,861,000 18,041,000 24,033,000 24,732,000 20,040,000 19,291,000 20,636,000 24,119,000 19,755,000 15,211,000 19,324,000 22,127,000 21,220,000 19,465,000 20,832,000 17,406,000 21,119,000 14,123,000 19,080,000 18,029,000 23,371,000 15,597,000 19,807,000 18,418,000 25,030,000 16,584,000 18,709,000 16,035,000 20,405,000 16,426,000 19,109,000 19,483,000 19,982,000 15,412,000 17,259,000 16,452,000 17,559,000 6,976,000 7,214,000 7,409,000 7,010,000 6,819,000 6,977,000 6,812,000 6,792,000 6,667,000 7,055,000 6,563,000 5,438,000 4,921,000 4,663,000 4,648,000 4,600 
      cost of sales
    112,593,000 125,287,000 103,029,000 113,925,000 100,428,000 106,392,000 106,756,000 93,024,000 100,287,000 117,175,000 113,582,000 108,924,000 109,333,000 101,906,000 160,311,000 110,971,000 110,029,000 109,291,000 91,780,000 100,504,000 68,964,000 86,752,000 78,320,000 85,327,000 74,711,000 88,188,000 87,589,000 96,660,000 75,134,000 83,823,000 70,959,000 87,009,000 77,618,000 82,141,000 79,246,000 79,944,000 73,059,000                    
      selling, general and administrative expenses
    9,031,000 8,500,000 9,171,000 8,034,000 7,889,000 7,349,000 7,447,000 6,308,000 7,311,000 7,044,000 7,805,000 7,291,000 7,384,000 8,335,000 8,104,000 7,008,000 8,744,000 7,305,000 6,619,000 6,802,000 5,891,000 4,136,000 4,232,000 4,451,000 5,354,000 6,192,000 6,326,000 6,465,000 6,846,000 6,068,000 6,393,000 6,900,000                         
      loss on asset disposal
    777,000 238,750 713,000 282,000 -40,000 83,000 4,000 5,000 8,000 209,000 1,067,000 64,000 192,000 -4,000  93,000 173,000 119,250  405,000 72,000                                    
      operating income
    57,647,000 -2,885,000 50,636,000 46,318,000 34,589,000 25,731,000 10,996,000 33,564,000 20,059,000 17,191,000 8,138,000 66,726,000 109,352,000 101,995,000 -11,937,000 125,928,000 103,927,000 71,854,000 46,316,000 30,314,000 -14,006,000 -1,051,000 -3,109,000 -25,750,000 -4,972,000 -9,086,000 -7,517,000 34,544,000 9,439,000 7,996,000 2,529,000 -790,000 -3,421,000 -10,829,000 -15,936,000 12,198,000 5,348,000 962,000 2,384,000 3,702,000 19,653,000 20,358,000 -11,806,000 28,712,000 31,465,000 26,489,000 14,416,000 18,800,000 23,098,000 29,668,000 21,319,000 31,426,000 42,572,000 37,514,000 39,346,000 16,800 
      yoy
    66.66% -111.21% 360.49% 38.00% 72.44% 49.68% 35.12% -49.70% -81.66% -83.15% -168.17% -47.01% 5.22% 41.95% -125.77% 315.41% -842.02% -6936.73% -1589.74% -217.72% 181.70% -88.43% -58.64% -174.54% -152.68% -213.63% -397.23% -4472.66% -375.91% -173.84% -115.87% -106.48% -163.97% -1225.68% -768.46% 229.50% -72.79% -95.27% -120.19% -87.11% -37.54% -23.15% -181.90% 52.72% 36.22% -10.72% -32.38% -40.18% -45.74% -20.91% -45.82% 186959.52%     
      qoq
    -2098.16% -105.70% 9.32% 33.91% 34.43% 134.00% -67.24% 67.33% 16.68% 111.24% -87.80% -38.98% 7.21% -954.44% -109.48% 21.17% 44.64% 55.14% 52.79% -316.44% 1232.64% -66.19% -87.93% 417.90% -45.28% 20.87% -121.76% 265.97% 18.05% 216.17% -420.13% -76.91% -68.41% -32.05% -230.64% 128.09% 455.93% -59.65% -35.60% -81.16% -3.46% -272.44% -141.12% -8.75% 18.79% 83.75% -23.32% -18.61% -22.15% 39.16% -32.16% -26.18% 13.48% -4.66% 234102.38%  
      operating margin %
    32.02% -2.20% 30.96% 27.48% 24.21% 18.44% 8.78% 25.25% 15.71% 12.14% 6.23% 36.46% 48.33% 48.06% -7.63% 51.61% 46.63% 38.03% 32.00% 21.96% -22.99% -1.16% -3.91% -24.50% -6.62% -10.56% -8.49% 25.09% 10.27% 8.15% 3.16% -0.85% -4.28% -13.85% -22.96% 12.46% 6.27% 1.13% 3.04% 3.09% 26.89% 30.84% -23.94% 35.53% 33.82% 35.60% 21.60% 24.35% 28.76% 35.22% 30.81% 40.15% 48.59% 48.59% 48.77% 29.27% 
      other income:
                                                            
      interest expense
    -7,848,000 -7,451,000 -7,587,000 -7,580,000 -7,726,000 -7,411,000 -7,241,000 -7,510,000 -7,665,000 -7,059,000 -7,501,000 -6,919,000 -7,173,000 -7,824,000 -7,897,000 -8,308,000 -10,036,000 -10,414,000 -11,313,000 -23,334,000 -15,916,000 -15,878,000 -15,877,000 -15,890,000 -15,783,000 -15,766,000 -15,621,000 -15,599,000 -15,650,000 -15,508,000 -15,693,000 -15,677,000                         
      other income
    114,000 47,000 23,000 30,000 225,000 77,000 52,000 165,000 160,000 55,000 125,000 52,000 -265,000 951,000 54,000 81,000 28,000 88,000 26,000 40,000 4,557,000 37,000 57,000 38,000 27,000 40,000 174,000 35,000 20,000 6,101,000 30,000 27,000 43,000 -586,000 22,000 16,000 42,000 20,000 26,000 34,000 23,000 99,000 54,000 5,000 6,000 23,000 33,000  15,000 5,000 34,000 6,000 16,000 132,000 86,000 -100 
      income before income taxes
    49,913,000                     -16,892,000 -18,929,000 -41,602,000 -20,728,000                                
      income taxes
                                                            
      net income
    49,913,000 -10,266,000 43,072,000 38,768,000 27,088,000 18,295,000 3,807,000 26,219,000 12,579,000 9,975,000 731,000 59,857,000 101,870,000 95,366,000 -19,809,000 117,582,000 93,661,000 61,490,000 35,029,000 7,020,000 -25,384,000 -16,882,000 -18,952,000 -41,612,000 -20,735,000 -24,882,000 -22,976,000 18,968,000 -6,079,000 -1,371,000 -13,146,000 -16,459,000 -19,051,000 -27,405,000 -31,602,000 -3,445,000 -10,336,000 -14,544,000 -13,430,000 -17,006,000 18,042,000 18,730,000 -13,478,000 27,016,000 29,774,000 24,847,000 12,719,000 17,130,000 21,453,000 27,921,000 19,705,000 30,244,000 41,217,000 36,285,000 38,211,000 16,700 
      yoy
    84.26% -156.11% 1031.39% 47.86% 115.34% 83.41% 420.79% -56.20% -87.65% -89.54% -103.69% -49.09% 8.76% 55.09% -156.55% 1574.96% -468.98% -464.23% -284.83% -116.87% 22.42% -32.15% -17.51% -319.38% 241.09% 1714.88% 74.78% -215.24% -68.09% -95.00% -58.40% 377.76% 84.32% 88.43% 135.31% -79.74% -157.29% -177.65% -0.36% -162.95% -39.40% -24.62% -205.97% 57.71% 38.79% -11.01% -35.45% -43.36% -47.95% -23.05% -48.43% 181001.80%     
      qoq
    -586.20% -123.83% 11.10% 43.12% 48.06% 380.56% -85.48% 108.43% 26.11% 1264.57% -98.78% -41.24% 6.82% -581.43% -116.85% 25.54% 52.32% 75.54% 398.99% -127.66% 50.36% -10.92% -54.46% 100.68% -16.67% 8.30% -221.13% -412.03% 343.40% -89.57% -20.13% -13.61% -30.48% -13.28% 817.33% -66.67% -28.93% 8.29% -21.03% -194.26% -3.67% -238.97% -149.89% -9.26% 19.83% 95.35% -25.75% -20.15% -23.17% 41.70% -34.85% -26.62% 13.59% -5.04% 228708.38%  
      net income margin %
    27.72% -7.83% 26.34% 23.00% 18.96% 13.11% 3.04% 19.73% 9.85% 7.04% 0.56% 32.71% 45.02% 44.93% -12.66% 48.19% 42.02% 32.55% 24.21% 5.09% -41.67% -18.70% -23.84% -39.60% -27.62% -28.91% -25.94% 13.78% -6.62% -1.40% -16.45% -17.66% -23.86% -35.05% -45.54% -3.52% -12.11% -17.13% -17.11% -14.20% 24.68% 28.38% -27.32% 33.43% 32.00% 33.40% 19.06% 22.18% 26.71% 33.15% 28.48% 38.64% 47.04% 47.00% 47.37% 29.09% 
      basic and diluted earnings per common unit
    4,720 -980 4,080 3,670 2,560 1,730 360 2,480 1,190 940 70 5,660 9,640           -370                                 
      weighted-average common units outstanding:
                                                            
      basic and diluted
    10,570,000 10,570,000 10,570,000 10,570,000 10,570,000 10,570,000 10,570,000 10,570,000 10,570,000 10,570,000 10,570,000 10,570,000 10,570,000 10,593,000 10,570,000 10,570,000 10,665,000 10,685,000 10,681,000 10,681,000 10,695,000 11,195,000 111,294,000 113,170,000 113,283,000 113,283,000 113,283,000 113,283,000 113,283,000 113,283,000                           
      income before income tax expense
     27,232,000 43,072,000 38,768,000 27,088,000 18,397,000 3,807,000 26,219,000 12,554,000 10,187,000 762,000 59,859,000 101,914,000 95,122,000 -19,780,000 117,701,000 93,919,000 61,528,000 35,029,000 7,020,000                -3,469,000 -10,313,000 -14,499,000 -13,223,000 -16,930,000 18,043,000 18,724,000 -13,469,000 27,012,000 29,786,000 24,792,000 12,732,000 17,137,000 21,460,000 28,006,000 19,702,000 30,262,000 41,218,000 36,297,000 38,216,000 16,700 
      income tax benefit
                                -112,000                            
      income tax expense
         102,000   -25,000 212,000 31,000 2,000 44,000 -244,000 29,000 119,000 258,000 38,000   19,000 -10,000 23,000 10,000 7,000 70,000 12,000 12,000  -40,000 12,000 19,000 -37,000 256,000 -35,000 -24,000 23,000 45,000 207,000 76,000 1,000 -6,000 9,000 -4,000 12,000 -55,000 13,000 7,000 7,000 85,000 -3,000 18,000 1,000 12,000 5,000  
      basic and diluted earnings per unit
                 4,515 -1,870 11,120 8,780 390 3,280 660                                     
      distributions declared per common unit
                   2,260 5,240 2,930 1,720                                      
      goodwill impairment
                           40,969,000                                 
      loss before income tax expense
                        -25,365,000             -11,354,750 -31,637,000                      
      basic and diluted loss per unit
                        -2,370                                    
      loss on asset disposals
                         462,000 39,000 94,000 -13,000 768,000 2,184,000 -9,000 454,000 230,000 28,000 78,000                         
      basic and diluted loss per common unit
                         -180 -170                                  
      distributions declared and paid per common unit
                                                            
      basic and diluted loss per unit data
                            -180 -22.5 -200                              
      net loss before income taxes
                             -2,543,750 -22,964,000  -6,191,000                            
      distributions declared per unit
                             82.5 140 70                             
      net income before income taxes
                               18,980,000                             
      basic and diluted earnings per unit data
                               170                             
      net loss per common unit – basic and diluted
                                -50                            
      loss before income tax
                                 -12,165,500 -13,134,000 -16,440,000 -19,088,000                        
      net loss per common unit — basic and diluted
                                 -107.5 -120 -150 -170 -100 -280                      
      weighted-average common units outstanding — basic and diluted
                                  113,283,000 113,283,000 113,283,000  113,283,000 113,283,000 113,283,000                    
      total operating costs and expenses
                                   93,987,000 83,280,000 89,021,000 85,329,000 85,698,000 79,973,000 83,959,000 76,090,000 116,095,000 53,439,000 45,646,000 61,131,000 52,103,000 61,585,000 47,911,000 52,317,000 58,415,000 57,218,000 54,560,000 47,880,000 46,850,000 45,042,000 39,689,000 41,327,000  
      cost of materials and other — affiliates
                                    2,038,000 1,396,000 1,774,000 1,664,000 2,146,000                    
      cost of materials and other — third parties
                                    20,259,000 14,447,250 17,721,000 20,477,000 19,591,000                    
      operating costs and expenses: - sum
                                    22,297,000 21,501,000 19,495,000 22,141,000 21,737,000 21,552,000 19,811,000 36,049,000 16,381,000 9,495,000 14,501,000 15,424,000 25,769,000 15,374,000 15,434,000 19,436,000 21,708,000 18,875,000 12,975,000 12,598,000 14,373,000 10,901,000 9,746,000  
      direct operating expenses (exclusive of depreciation and amortization) — affiliates
                                    840,000 712,000 978,000 1,038,000 832,000 801,750 1,106,000 1,249,000 852,000 813,000 1,030,000 1,195,000 1,027,000 833,000 621,000 817,000  806,000 1,058,000 381,000 154,000 165,000 155,000  
      direct operating expenses (exclusive of depreciation and amortization) — third parties
                                    38,055,000 27,787,750 39,290,000 36,783,000 35,078,000 26,798,250 31,460,000 52,895,000 22,838,000 19,871,750 32,149,000 23,951,000 23,387,000 20,911,000 25,487,000 26,100,000 23,436,000 22,558,000 22,696,000 22,456,000 20,964,000 19,918,000 22,111,000  
      selling, general and administrative expenses — affiliates
                                    3,370,000 2,849,750 3,917,000 3,596,000 3,886,000                   6,400 
      selling, general and administrative expenses — third parties
                                    2,292,000 1,837,750 2,166,000 2,158,000 3,028,000                   2,000 
      interest expense and other financing costs
                                    -15,726,000 -15,755,000 -15,737,000 -15,696,000 -15,706,000 -15,737,000 -15,633,000 -15,552,000 -1,635,000 -1,739,000 -1,727,000 -1,717,000 -1,697,000 -1,731,000 -1,724,000 -1,669,000 -1,659,000 -1,675,000 -1,663,000 -1,203,000 -1,391,000 -1,378,000 -1,238,000  
      interest income
                                    16,000 21,000 14,000 13,000 3,000 2,000  2,000 2,000 6,000 10,000 12,000 12,000 11,000 7,000 6,000 6,000 8,000 12,000 33,000 21,000 29,000 22,000  
      total other expense
                                    -15,667,000 -16,320,000 -15,701,000 -15,667,000 -15,661,000 -15,461,000 -15,607,000       -1,246,250 -1,684,000 -1,663,000 -1,638,000 -1,116,250 -1,617,000      
      loss on extinguishment of debt
                                         254,000  -5,116,000                 
      net income per common unit — basic and diluted
                                       -30 -90                    
      cost of product sold (exclusive of depreciation and amortization) — affiliates
                                         471,500 529,000 536,000 821,000 1,287,250 1,147,000 2,184,000 1,818,000     2,412,000 2,529,000 2,990,000 3,680,000 3,642,000 2,866,000  
      cost of product sold (exclusive of depreciation and amortization) — third parties
                                         17,588,750 19,282,000 35,513,000 15,560,000 12,636,250 13,354,000 13,240,000 23,951,000 12,755,000 13,202,000 17,109,000 19,462,000 16,463,000 10,446,000 9,608,000 10,693,000 7,259,000 6,880,000  
      selling, general and administrative expenses (exclusive of depreciation and amortization) — affiliates
                                         2,734,750 3,560,000 3,917,000 3,462,000 2,572,250 3,661,000 3,361,000 3,267,000 2,867,000 3,035,000 3,973,000 3,536,000 4,126,000 3,620,000 3,819,000 3,364,000 3,438,000 3,249,000  
      selling, general and administrative expenses (exclusive of depreciation and amortization) — third parties
                                         2,764,250 3,701,000 4,426,000 2,930,000 1,214,750 2,381,000 1,162,000 1,316,000 949,000 928,000 1,297,000 1,118,000 1,140,000 968,000 2,158,000 1,266,000 1,094,000 1,418,000  
      net income per common unit – basic
                                         -30 -120 -150 250 147.5 -180 370 410 175 170 230 290 310 270      
      net income per common unit – diluted
                                         -30 -120 -150 250 147.5 -180 370 410 175 170 230 290 310 270      
      weighted-average common units outstanding:
                                                            
      basic
                                     113,283,000    103,299,000 113,283,000 113,283,000 73,128,000 73,123,000 73,123,000 73,123,000 73,123,000 73,115,000 73,115,000 73,113,000 73,113,000 73,072,000 73,076,000 73,031,000 73,008,000 73,003,000 73,001,000  
      diluted
                                     113,283,000    103,299,000 113,283,000 113,283,000 73,128,000 73,131,000 73,123,000 73,131,000 73,131,000 73,139,000 73,139,000 73,146,000 73,145,000 73,228,000 73,225,000 73,196,000 73,073,000 73,083,000 73,044,000  
      total other income
                                           -20,632,000 -1,610,000 -1,634,000 -1,663,000 -1,700,000 -1,679,000       -1,164,000 -1,354,000 -1,217,000 -1,130,000 -100 
      cost of product sold — affiliates
                                                 2,619,000 2,232,000 2,327,000 2,246,000       1,500 
      direct operating expenses — affiliates
                                                    753,000       700 
      insurance recovery — business interruption
                                                        -840,000 -490,000  -2,900 
      net income per common unit — basic
                                                       410 230 500 420  
      net income per common unit — diluted
                                                       410 230 500 420  
      net income subsequent to initial public offering
                                                        41,217,000 36,285,000 30,849,000  
      cost of product sold — third parties
                                                           6,000 
      direct operating expenses — third parties
                                                           22,300 
      adjusted nitrogen fertilizer ebitda
                                                           25,900 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 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 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 
                                                            
        assets
                                                            
        current assets:
                                                            
        cash and cash equivalents
      156,183,000 114,400,000 121,775,000 90,857,000 110,539,000 47,524,000 64,622,000 45,279,000 89,175,000 68,699,000 121,363,000 86,339,000 119,041,000 156,312,000 137,347,000 112,516,000 100,669,000 42,819,000 52,561,000 30,559,000 48,285,000 32,557,000 58,014,000 36,994,000 83,667,000 69,266,000 96,606,000 61,776,000 61,441,000 28,252,000 61,111,000 49,173,000 69,977,000 51,650,000 81,538,000 55,595,000 65,296,000 76,261,000 51,979,000 49,967,000 33,250,000 66,981,000 72,638,000 79,914,000 68,004,000 78,470,000 85,919,000 85,142,000 87,166,000 225,573,000 236,975,000 255,514,000 229,751,000 71,369,000 
        accounts receivable
      47,814,000 50,488,000 41,641,000 65,216,000 36,007,000 48,108,000 37,278,000 41,893,000 36,180,000 33,925,000 52,738,000 90,448,000 54,497,000 35,998,000 43,577,000 88,351,000 32,928,000 34,862,000 15,491,000 36,896,000 18,592,000 15,062,000 14,868,000 34,264,000 14,909,000 22,980,000 16,922,000 61,662,000 20,564,000 27,574,000 14,948,000 9,855,000 12,345,000 14,440,000 15,115,000 13,924,000 12,710,000 16,059,000 9,066,000 7,187,000 7,865,000 10,397,000 9,808,000 7,136,000 6,688,000 7,922,000 10,622,000 7,549,000 7,826,000 5,681,000 9,322,000 7,597,000 5,871,000 7,407,000 
        inventories
      81,852,000 73,863,000 80,391,000 75,579,000 75,302,000 80,610,000 72,401,000 69,165,000 73,994,000 78,874,000 86,643,000 77,518,000 65,030,000 85,402,000 65,192,000 52,270,000 59,026,000 50,129,000 57,184,000 42,349,000 45,913,000 46,668,000 55,092,000 53,930,000 56,864,000 55,810,000 72,479,000 63,554,000 56,905,000 49,502,000 57,793,000 54,097,000 57,556,000 62,169,000 64,071,000 58,167,000 56,888,000 53,113,000 32,592,000 37,529,000 36,716,000 35,721,000 33,871,000 35,614,000 32,949,000 30,913,000 33,535,000 33,064,000 32,838,000 21,793,000 23,255,000 25,799,000 22,714,000 20,820,000 
        prepaid expenses
      1,232,000 1,975,000 1,831,000 1,257,000 3,956,000 6,431,000 6,842,000                                                
        other current assets
      1,470,000 1,471,000 1,470,000 632,000 821,000 959,000 1,326,000                                                
        total current assets
      288,551,000 242,197,000 247,108,000 233,541,000 226,625,000 183,632,000 182,469,000 165,869,000 203,396,000 188,323,000 270,662,000 265,704,000 241,320,000 283,371,000 253,739,000 262,245,000 195,750,000 134,484,000 132,730,000 118,214,000 116,114,000 99,594,000 133,240,000 130,594,000 160,048,000 153,966,000 191,680,000 193,981,000 143,727,000 110,313,000 139,101,000 118,918,000 145,006,000 133,556,000 166,884,000 134,531,000 139,886,000 151,836,000 96,737,000 98,772,000 80,616,000 117,786,000 123,581,000 129,578,000 112,400,000 123,452,000 138,835,000 135,780,000 133,471,000 255,772,000 271,863,000 291,735,000 262,074,000 105,485,000 
        property, plant, and equipment
      705,324,000 713,063,000 722,930,000  714,987,000 728,203,000 744,216,000 761,023,000 769,854,000 783,561,000 796,627,000 810,994,000 826,277,000 820,940,000 835,713,000 850,462,000 856,686,000 868,410,000 883,336,000 897,847,000 912,690,000 924,586,000 940,328,000 951,959,000 964,502,000                              
        other long-term assets
      43,320,000 42,736,000 43,916,000 49,592,000 45,014,000 47,612,000 45,530,000 48,440,000 45,826,000 47,106,000 48,990,000 23,704,000 14,971,000 14,489,000 13,249,000 14,351,000 15,868,000 16,266,000 15,816,000 16,819,000 18,137,000 18,896,000 19,437,000 14,433,000 14,803,000 16,027,000 17,238,000 4,198,000 4,414,000 4,457,000 4,484,000                       33,000 
        total assets
      1,037,195,000 997,996,000 1,013,954,000 1,018,724,000 986,626,000 959,447,000 972,215,000 975,332,000 1,019,076,000 1,018,990,000 1,116,279,000 1,100,402,000 1,082,568,000 1,118,800,000 1,102,701,000 1,127,058,000 1,068,304,000 1,019,160,000 1,031,882,000 1,032,880,000 1,046,941,000 1,043,076,000 1,133,974,000 1,137,955,000 1,180,322,000 1,190,405,000 1,246,990,000 1,254,388,000 1,218,512,000 1,199,576,000 1,239,495,000 1,234,276,000 1,275,759,000 1,280,589,000 1,328,430,000 1,312,217,000 1,326,857,000 1,352,649,000 529,222,000 536,482,000 523,755,000 559,959,000 568,091,000 578,839,000 562,088,000 575,188,000 592,615,000 593,454,000 594,028,000 656,931,000 659,309,000 673,779,000 640,740,000 479,475,000 
        liabilities and partners’ capital
                                                            
        current liabilities:
                                                            
        accounts payable
      33,640,000 32,865,000 26,938,000 30,365,000 29,379,000 24,148,000 23,657,000 33,486,000 32,068,000 28,069,000 27,140,000 45,522,000 72,464,000 49,928,000 49,241,000 41,504,000 38,807,000 27,196,000 20,603,000 19,544,000 22,289,000 20,968,000 22,500,000 21,069,000 29,389,000 21,340,000 18,852,000 26,789,000 20,019,000                          
        accounts payable to affiliates
      5,612,000 5,562,000 4,969,000 6,213,000 4,680,000 5,959,000 8,617,000 5,319,000 4,657,000 5,896,000 6,722,000 5,302,000 6,341,000 11,713,000 6,081,000 8,895,000 6,409,000 2,935,000 1,061,000 5,217,000 2,288,000 3,044,000 1,585,000 2,578,000 2,131,000 2,434,000 3,697,000 2,976,000 2,170,000                          
        deferred revenue
      35,885,000 9,097,000 36,893,000 50,788,000 39,340,000 7,479,000 19,795,000 15,796,000 38,956,000 6,666,000 44,871,000 47,516,000 64,658,000 4,196,000 80,877,000 87,060,000 33,754,000 15,196,000 40,383,000 30,631,000 11,606,000 2,666,000 37,634,000 27,841,000 16,448,000 9,485,000 65,366,000 68,804,000   24,229,000 12,895,000 19,361,000 2,861,000 31,886,000 12,571,000 5,294,000 1,326,000 838,000 3,129,000 2,401,000 1,911,000 6,342,000 13,613,000 1,763,000 399,000 9,965,000 696,000 797,000 16,023,000 9,019,000 20,550,000 2,970,000 26,696,000 
        other current liabilities
      32,589,000 22,749,000 30,135,000 23,983,000 31,785,000 21,912,000 27,459,000 20,872,000 37,546,000 27,683,000 34,621,000 27,717,000 40,309,000 29,960,000 37,007,000 24,401,000 36,219,000 24,390,000 37,781,000 18,709,000 32,429,000 18,833,000 30,863,000 24,043,000 36,687,000 22,952,000                             
        total current liabilities
      107,726,000 70,273,000 98,935,000 111,349,000 105,184,000 59,498,000 79,528,000 75,473,000 113,227,000 68,314,000 113,354,000 126,057,000 183,772,000 95,797,000 173,206,000 161,860,000 115,189,000 69,717,000 99,828,000 76,341,000 68,612,000 45,511,000 92,582,000 75,531,000 84,655,000 56,211,000 124,338,000 122,635,000 86,204,000 55,424,000 79,544,000 56,095,000 71,724,000 45,615,000 88,968,000 63,016,000 61,652,000 54,055,000 20,264,000 25,914,000 157,154,000 151,625,000 29,095,000 39,707,000 27,975,000 29,564,000 36,468,000 27,386,000 29,195,000 51,712,000 42,454,000 57,037,000 30,491,000 51,994,000 
        long-term liabilities:
                                                            
        long-term debt and finance lease obligation, net of current portion
      569,119,000 569,230,000 569,275,000                                                    
        long-term deferred revenue
      22,207,000 23,793,000 25,379,000 26,966,000 28,552,000 30,138,000 31,724,000 33,311,000 34,897,000 36,483,000 38,069,000                                            
        other long-term liabilities
      19,645,000 18,159,000 18,704,000 19,365,000 17,828,000 18,609,000 15,821,000 16,360,000 14,486,000 14,827,000 15,232,000 15,734,000 16,965,000 15,259,000 15,565,000 12,358,000 15,876,000 13,674,000 8,780,000 8,356,000 9,515,000 9,432,000 9,384,000 10,474,000 11,791,000 12,347,000 12,687,000 2,938,000 2,919,000 2,399,000 2,501,000 2,424,000 1,599,000 1,644,000 1,111,000 1,187,000 1,257,000 1,142,000 16,000 16,000 18,000 16,000 24,000           3,935,000 
        total long-term liabilities
      610,971,000 611,182,000 613,358,000 614,305,000 594,090,000 596,321,000 594,985,000 596,979,000 596,561,000 598,360,000 600,225,000 562,534,000 563,643,000 561,817,000 562,004,000 623,000,000 641,110,000 654,095,000 643,726,000 642,298,000 642,477,000 641,439,000 642,699,000 642,880,000 643,311,000 643,002,000 642,499,000 631,927,000 631,111,000 629,809,000 629,149,000 628,328,000 626,777,000 626,114,000 624,891,000 624,294,000 625,754,000 626,454,000 124,990,000 125,016,000 18,000 16,000 125,024,000 125,201,000 125,420,000 125,693,000 125,878,000 126,147,000 126,332,000 127,186,000 127,366,000 127,484,000 126,054,000 3,935,000 
        commitments and contingencies
                                                            
        partners’ capital:
                                                            
        common unitholders, 10,569,637 and 10,569,637 units issued and outstanding as of september 30, 2025 and december 31, 2024, respectively
      318,497,000                                                      
        general partner interest
      1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000    1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000        
        total partners’ capital
      318,498,000 316,541,000 301,661,000 293,070,000 287,352,000 303,628,000 297,702,000 302,880,000 309,288,000 352,316,000 402,700,000 411,811,000 335,153,000 461,186,000 367,491,000 342,198,000 312,005,000 295,348,000 288,328,000 314,241,000 335,852,000 356,126,000 398,693,000 419,544,000 452,356,000 491,192,000 480,153,000 499,826,000   530,802,000  577,258,000 608,860,000 614,571,000  639,451,000 672,140,000 383,968,000  366,583,000 408,318,000 413,972,000  408,693,000 419,931,000 430,269,000  438,501,000 478,033,000 489,489,000 489,258,000 484,195,000 423,546,000 
        total liabilities and partners’ capital
      1,037,195,000 997,996,000 1,013,954,000 1,018,724,000 986,626,000 959,447,000 972,215,000 975,332,000 1,019,076,000 1,018,990,000 1,116,279,000 1,100,402,000 1,082,568,000 1,118,800,000 1,102,701,000 1,127,058,000 1,068,304,000 1,019,160,000 1,031,882,000 1,032,880,000 1,046,941,000 1,043,076,000 1,133,974,000 1,137,955,000 1,180,322,000 1,190,405,000 1,246,990,000 1,254,388,000 1,218,512,000 1,199,576,000 1,239,495,000  1,275,759,000 1,280,589,000 1,328,430,000  1,326,857,000 1,352,649,000 529,222,000  523,755,000 559,959,000 568,091,000  562,088,000 575,188,000 592,615,000  594,028,000 656,931,000 659,309,000 673,779,000 640,740,000 479,475,000 
        common unitholders, 10,569,637 and 10,569,637 units issued and outstanding as of june 30, 2025 and december 31, 2024, respectively
       316,540,000                                                     
        common unitholders, 10,569,637 and 10,569,637 units issued and outstanding as of march 31, 2025 and december 31, 2024, respectively
        301,660,000                                                    
        property, plant and equipment
         735,591,000                                                   
        long-term debt and finance lease obligations, net of current portion
         567,974,000                                                   
        common unitholders, 10,569,637 and 10,569,637 units issued and outstanding as of december 31, 2024 and 2023, respectively
         293,069,000                                                   
        long-term debt
          547,710,000 547,574,000 547,440,000 547,308,000 547,178,000 547,050,000 546,924,000 546,800,000 546,678,000 546,558,000 546,439,000 610,642,000 625,234,000 640,421,000 634,946,000 633,942,000 632,962,000 632,007,000 633,315,000 632,406,000 631,520,000 630,655,000 629,812,000 628,989,000 628,192,000 627,410,000 626,648,000 625,904,000 625,178,000 624,470,000 623,780,000 623,107,000 624,497,000 625,312,000 124,974,000 125,000,000   125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 125,000,000 125,000,000  
        common unitholders, 10,569,637 and 10,569,637 units issued and outstanding as of september 30, 2024 and december 31, 2023, respectively
          287,351,000                                                  
        common unitholders, 10,569,637 and 10,569,637 units issued and outstanding as of june 30, 2024 and december 31, 2023, respectively
           303,627,000                                                 
        common unitholders, 10,569,637 and 10,569,637 units issued and outstanding as of march 31, 2024 and december 31, 2023, respectively
            297,701,000                                                
        prepaid expenses and other current assets
             9,532,000 4,047,000 6,825,000 9,918,000 11,399,000 2,752,000 5,659,000 7,623,000 9,108,000 3,127,000 6,674,000 7,494,000 8,410,000 3,324,000 5,307,000 5,266,000 5,406,000 4,608,000 5,910,000 5,673,000 6,989,000 4,817,000 4,985,000                         
        common unitholders, 10,569,637 and 10,569,637 units issued and outstanding as of december 31, 2023 and 2022, respectively
             302,879,000                                               
        common unitholders, 10,569,637 and 10,569,637 units issued and outstanding at september 30, 2023 and december 31, 2022, respectively
              309,287,000                                              
        common unitholders, 10,569,637 and 10,569,637 units issued and outstanding at june 30, 2023 and december 31, 2022, respectively
               352,315,000                                             
        common unitholders, 10,569,637 and 10,569,637 units issued and outstanding at march 31, 2023 and december 31, 2022, respectively
                402,699,000                                            
        common unitholders, 10,569,637 and 10,681,332 units issued and outstanding as of december 31, 2022 and 2021, respectively
                 411,810,000                                           
        common unitholders, 10,569,637 and 10,681,332 units issued and outstanding at september 30, 2022 and december 31, 2021, respectively
                  335,152,000                                          
        common unitholders, 10,569,637 and 10,681,332 units issued and outstanding at june 30, 2022 and december 31, 2021, respectively
                   461,185,000                                         
        common unitholders, 10,569,637 and 10,681,332 units issued and outstanding at march 31, 2022 and december 31, 2021, respectively
                    367,490,000                                        
        current portion of long-term debt
                         2,240,000                     125,000,000 125,000,000             
        common unitholders, 10,681,332 and 10,705,710 units issued and outstanding as of december 31, 2021 and 2020, respectively
                     342,197,000                                       
        common unitholders, 10,681,332 and 10,705,710 units issued and outstanding at september 30, 2021 and december 31, 2020, respectively
                      312,004,000                                      
        common unitholders, 10,681,332 and 10,705,710 units issued and outstanding at june 30, 2021 and december 31, 2020, respectively
                       295,347,000                                     
        common unitholders, 10,681,332 and 10,705,710 units issued and outstanding at march 31, 2021 and december 31, 2020, respectively
                        288,327,000                                    
        goodwill
                            40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 40,969,000 
        common unitholders, 10,705,710 and 11,328,297 units issued and outstanding as of december 31, 2020 and 2019, respectively
                         314,240,000                                   
        common unitholders, 110,988,971 and 113,282,973 units issued and outstanding at september 30, 2020 and december 31, 2019, respectively
                          335,851,000                                  
        common unitholders, 112,392,755 and 113,282,973 units issued and outstanding at june 30, 2020 and december 31, 2019, respectively
                           356,125,000                                 
        common unitholders, 113,282,973 units issued and outstanding at march 31, 2020 and december 31, 2019
                            398,692,000                                
        common unitholders, 113,282,973 units issued and outstanding as of december 31, 2019 and 2018, respectively
                             419,543,000                               
        common unitholders, 113,282,973 units issued and outstanding at september 30, 2019 and december 31, 2018
                              452,355,000                              
        property, plant, and equipment, net of accumulated depreciation
                               979,443,000 997,103,000 1,015,240,000 1,029,402,000 1,043,837,000 1,054,941,000 1,069,526,000 1,083,999,000 1,099,817,000 1,114,374,000 1,130,121,000 1,140,165,000 1,154,568,000 387,635,000 393,133,000 398,686,000 397,828,000 400,298,000 404,934,000 405,243,000 407,173,000 409,121,000 412,956,000 415,710,000 355,366,000 341,495,000 336,071,000 332,454,000 332,945,000 
        common unitholders, 113,282,973 units issued and outstanding at june 30, 2019 and december 31, 2018
                               491,191,000                             
        accrued expenses and other current liabilities
                                36,423,000 24,066,000 64,015,000                         11,398,000 
        commitments and contingencies:
                                                            
        common unitholders, 113,282,973 units issued and outstanding at march 31, 2019 and december 31, 2018
                                480,152,000                            
        net sales
                                 351,082,000 79,909,000 93,197,000 79,859,000 330,802,000 69,393,000 97,896,000 85,321,000 356,284,000 78,474,000 119,797,000 73,092,000 289,194,000 49,325,000 80,815,000 93,050,000 298,665,000 66,733,000 77,215,000 80,316,000 323,672,000 69,199,000 78,276,000 302,867,000   57,377,000 
        operating costs and expenses:
                                                            
        cost of materials and other
                                 88,461,000 19,590,000 19,139,000                         
        direct operating expenses
                                 159,319,000 35,334,000 47,465,000                         
        depreciation and amortization
                                 71,575,000 16,035,000 20,405,000 16,426,000 73,986,000 19,483,000 19,982,000 15,412,000 58,246,000 16,452,000 17,559,000 6,976,000 28,452,000 7,409,000 7,010,000 6,819,000 27,249,000 6,812,000 6,792,000 6,667,000 25,578,000 6,563,000 5,438,000 18,869,000   4,637,000 
        cost of sales
                                 319,355,000 70,959,000 87,009,000 77,618,000 314,390,000 79,246,000 79,944,000 73,059,000 300,307,000                   
        selling, general and administrative expenses
                                 25,023,000 6,393,000 6,900,000                         
        loss on asset disposals
                                 390,000 28,000 78,000                         
        operating income
                                 6,314,000 2,529,000 -790,000 -3,421,000 -9,218,000 -15,936,000 12,198,000 5,348,000 26,701,000 2,384,000 3,702,000 19,653,000 68,729,000 -11,806,000 28,712,000 31,465,000 82,803,000 14,416,000 18,800,000 23,098,000 124,851,000 21,319,000 31,426,000 136,198,000   16,766,000 
        interest expense
                                 -62,588,000 -15,693,000 -15,677,000                         
        other income
                                 6,201,000 30,000 27,000 43,000 -505,000 22,000 16,000 42,000 103,000 26,000 34,000 23,000 164,000 54,000 5,000 6,000 71,000 33,000  15,000 93,000 34,000 6,000 205,000   -29,000 
        income before income tax expense
                                 -50,073,000    -72,568,000 -31,637,000 -3,469,000 -10,313,000  -13,223,000  18,043,000  -13,469,000 27,012,000 29,786,000   17,137,000 21,460,000 118,724,000 19,702,000 30,262,000 132,475,000   16,744,000 
        income tax benefit
                                 -46,000 12,000 19,000 -37,000  -35,000 -24,000  329,000  76,000  11,000  -4,000  -28,000 13,000          
        net income
                                 -50,027,000 -13,146,000 -16,459,000 -19,051,000 -72,788,000 -31,602,000 -3,445,000 -10,336,000 -26,938,000 -13,430,000 -17,006,000 18,042,000 62,042,000 -13,478,000 27,016,000 29,774,000 76,149,000 12,719,000 17,130,000 21,453,000 118,616,000 19,705,000 30,244,000 132,447,000   16,734,000 
        net income per common unit - basic and diluted
                                 -440                           
        distributions declared and paid per common unit
                                                            
        weighted-average common units outstanding:
                                                            
        basic and diluted
                                 113,283,000                           
        partners’ capital
                                  501,197,000 514,343,000                         
        income before income tax
                                  -13,134,000 -16,440,000 -19,088,000                        
        net income per common unit — basic and diluted
                                  -120 -150 -170  -280 -30 -90                    
        weighted-average common units outstanding — basic and diluted
                                  113,283,000 113,283,000 113,283,000  113,283,000 113,283,000 113,283,000                    
        accounts payable, including 2,410 and 2,223 due to affiliates at june 30, 2018 and december 31, 2017, respectively
                                   25,272,000                         
        accrued expenses and other current liabilities, including 3,511 and 4,742 with affiliates at june 30, 2018 and december 31, 2017, respectively
                                   30,152,000                         
        total operating costs and expenses
                                   93,987,000 83,280,000 340,020,000 85,329,000 85,698,000 79,973,000 329,583,000 76,090,000 116,095,000 53,439,000 220,465,000 61,131,000 52,103,000 61,585,000 215,862,000 52,317,000 58,415,000 57,218,000 198,821,000 47,880,000 46,850,000 166,669,000   40,611,000 
        prepaid expenses and other current assets, including 356 and 315 with affiliates at march 31, 2018 and december 31, 2017, respectively
                                    5,249,000                        
        accounts payable, including 2,319 and 2,223 due to affiliates at march 31, 2018 and december 31, 2017, respectively
                                    24,046,000                        
        personnel accruals, including 993 and 1,521 with affiliates at march 31, 2018 and december 31, 2017, respectively
                                    5,267,000                        
        accrued expenses and other current liabilities, including 939 and 3,221 with affiliates at march 31, 2018 and december 31, 2017, respectively
                                    26,002,000                        
        common unitholders, 113,282,973 units issued and outstanding at march 31, 2018 and december 31, 2017
                                    530,801,000                        
        cost of materials and other — affiliates
                                    2,038,000  1,774,000 1,664,000 2,146,000                    
        cost of materials and other — third parties
                                    20,259,000  17,721,000 20,477,000 19,591,000                    
        direct operating expenses (exclusive of depreciation and amortization) — affiliates
                                    840,000  978,000 1,038,000 832,000  1,106,000 1,249,000 852,000  1,030,000 1,195,000 1,027,000 3,024,000 621,000 817,000  4,072,000 1,058,000 381,000 1,167,000   693,000 
        direct operating expenses (exclusive of depreciation and amortization) — third parties
                                    38,055,000  39,290,000 36,783,000 35,078,000  31,460,000 52,895,000 22,838,000  32,149,000 23,951,000 23,387,000 95,934,000 25,487,000 26,100,000 23,436,000 90,020,000 22,696,000 22,456,000 85,324,000   22,331,000 
        selling, general and administrative expenses — affiliates
                                    3,370,000  3,917,000 3,596,000 3,886,000                    
        selling, general and administrative expenses — third parties
                                    2,292,000  2,166,000 2,158,000 3,028,000                    
        other income:
                                                            
        interest expense and other financing costs
                                    -15,726,000 -62,895,000 -15,737,000 -15,696,000 -15,706,000 -48,557,000 -15,633,000 -15,552,000 -1,635,000 -6,880,000 -1,727,000 -1,717,000 -1,697,000 -6,783,000 -1,724,000 -1,669,000 -1,659,000 -6,294,000 -1,663,000 -1,203,000 -4,007,000    
        interest income
                                    16,000 50,000 14,000 13,000 3,000 6,000  2,000 2,000 40,000 10,000 12,000 12,000 30,000 7,000 6,000 6,000 74,000 12,000 33,000 79,000   7,000 
        total other income
                                    -15,667,000 -63,350,000 -15,701,000 -15,667,000 -15,661,000 -53,310,000 -15,607,000 -20,632,000 -1,610,000 -6,676,000 -1,663,000 -1,700,000 -1,679,000 -6,682,000 -1,684,000 -1,663,000 -1,638,000 -6,127,000 -1,617,000 -1,164,000 -3,723,000   -22,000 
        prepaid expenses and other current assets, including 315 and 750 from affiliates at december 31, 2017 and 2016, respectively
                                     5,793,000                       
        other long-term assets, including 598 with affiliates at december 31, 2016
                                     4,863,000                       
        liabilities and partners' capital
                                                            
        accounts payable, including 2,223 and 2,402 due to affiliates at december 31, 2017 and 2016, respectively
                                     23,518,000                       
        personnel accruals, including 1,521 and 1,968 with affiliates at december 31, 2017 and 2016, respectively
                                     8,240,000                       
        accrued expenses and other current liabilities, including 3,221 and 2,515 with affiliates at december 31, 2017 and 2016, respectively
                                     11,442,000                       
        partners' capital:
                                                            
        common unitholders, 113,282,973 units issued and outstanding at december 31, 2017 and 2016, respectively
                                     549,852,000                       
        total partners' capital
                                     549,853,000    624,907,000    385,552,000    413,931,000    439,921,000       
        total liabilities and partners' capital
                                     1,234,276,000    1,312,217,000    536,482,000    578,839,000    593,454,000       
        cost of materials and other - affiliates
                                     7,473,000    2,645,000                   
        cost of materials and other - third parties
                                     77,401,000    91,148,000                   
        direct operating expenses (exclusive of depreciation and amortization) - affiliates
                                     3,877,000    4,225,000    4,093,000               
        direct operating expenses (exclusive of depreciation and amortization) - third parties
                                     151,653,000    144,043,000    101,963,000               
        selling, general and administrative expenses - affiliates
                                     15,615,000    14,989,000                   
        selling, general and administrative expenses - third parties
                                     10,015,000    14,287,000                   
        loss on extinguishment of debt
                                         -4,862,000  -5,116,000                 
        income tax expense
                                     220,000   23,000  207,000  1,000  9,000  12,000   7,000 7,000 108,000  18,000 28,000   10,000 
        net income per common unit - basic
                                     -640    -260    850               
        net income per common unit - diluted
                                     -640    -260    850               
        basic
                                     113,283,000    103,299,000 113,283,000 113,283,000 73,128,000 73,123,000 73,123,000 73,123,000 73,123,000 73,115,000 73,115,000 73,113,000 73,113,000 73,072,000 73,076,000 73,031,000 73,008,000    
        diluted
                                     113,283,000    103,299,000 113,283,000 113,283,000 73,128,000 73,131,000 73,123,000 73,131,000 73,131,000 73,139,000 73,139,000 73,146,000 73,145,000 73,228,000 73,225,000 73,196,000 73,073,000    
        prepaid expenses and other current assets, including 336 and 750 with affiliates at september 30, 2017 and december 31, 2016, respectively
                                      5,128,000                      
        other long-term assets, including 463 and 598 with affiliates at september 30, 2017 and december 31, 2016, respectively
                                      5,785,000                      
        accounts payable, including 2,217 and 2,402 due to affiliates at september 30, 2017 and december 31, 2016, respectively
                                      20,994,000                      
        personnel accruals, including 1,860 and 1,968 with affiliates at september 30, 2017 and december 31, 2016, respectively
                                      7,454,000                      
        accrued expenses and other current liabilities, including 2,844 and 2,515 with affiliates at september 30, 2017 and december 31, 2016, respectively
                                      23,915,000                      
        common unitholders, 113,282,973 units issued and outstanding at september 30, 2017 and december 31, 2016
                                      577,257,000                      
        prepaid expenses and other current assets, including 383 and 750 with affiliates at june 30, 2017 and december 31, 2016, respectively
                                       5,297,000                     
        other long-term assets, including 508 and 598 with affiliates at june 30, 2017 and december 31, 2016, respectively
                                       6,247,000                     
        accounts payable, including 2,298 and 2,402 due to affiliates at june 30, 2017 and december 31, 2016, respectively
                                       25,388,000                     
        personnel accruals, including 1,497 and 1,968 with affiliates at june 30, 2017 and december 31, 2016, respectively
                                       6,945,000                     
        accrued expenses and other current liabilities, including 1,825 and 2,515 with affiliates at june 30, 2017 and december 31, 2016, respectively
                                       10,421,000                     
        common unitholders, 113,282,973 units issued and outstanding at june 30, 2017 and december 31, 2016
                                       608,859,000                     
        prepaid expenses and other current assets, including 480 and 750 with affiliates at march 31, 2017 and december 31, 2016, respectively
                                        6,160,000                    
        other long-term assets, including 553 and 598 with affiliates at march 31, 2017 and december 31, 2016, respectively
                                        6,203,000                    
        accounts payable, including 2,800 and 2,402 due to affiliates at march 31, 2017 and december 31, 2016, respectively
                                        25,753,000                    
        personnel accruals, including 1,175 and 1,968 with affiliates at march 31, 2017 and december 31, 2016, respectively
                                        5,325,000                    
        accrued expenses and other current liabilities, including 1,261 and 2,515 with affiliates at march 31, 2017 and december 31, 2016, respectively
                                        26,004,000                    
        common unitholders, 113,282,973 units issued and outstanding at march 31, 2017 and december 31, 2016
                                        614,570,000                    
        prepaid expenses and other current assets, including 750 and 883 from affiliates at december 31, 2016 and 2015, respectively
                                         6,845,000                   
        other long-term assets, including 598 and 777 with affiliates at december 31, 2016 and 2015, respectively
                                         6,596,000                   
        accounts payable, including 2,402 and 1,940 due to affiliates at december 31, 2016 and 2015, respectively
                                         28,815,000                   
        personnel accruals, including 1,968 and 1,974 with affiliates at december 31, 2016 and 2015, respectively
                                         9,256,000                   
        accrued expenses and other current liabilities, including 2,515 and 2,334 with affiliates at december 31, 2016 and 2015, respectively
                                         12,374,000                   
        common unitholders, 113,282,973 and 73,128,269 units issued and outstanding at december 31, 2016 and 2015, respectively
                                         624,906,000                   
        accumulated other comprehensive loss
                                             -119,000 -372,000 -615,000 -843,000 -1,038,000 -1,240,000 -1,551,000 -1,726,000 -1,899,000 -2,084,000 -2,392,000 -2,388,000 -2,412,000   
        income before income tax benefit
                                         -26,609,000  -16,930,000  62,053,000    76,121,000 12,732,000          
        prepaid expenses and other current assets, including 701 and 883 from affiliates at september 30, 2016 and december 31, 2015, respectively
                                          4,992,000                  
        other long-term assets, including 643 and 777 with affiliates at september 30, 2016 and december 31, 2015, respectively
                                          5,837,000                  
        accounts payable, including 1,980 and 1,940 due to affiliates at september 30, 2016 and december 31, 2015, respectively
                                          22,190,000                  
        personnel accruals, including 2,181 and 1,974 with affiliates at september 30, 2016 and december 31, 2015, respectively
                                          8,103,000                  
        accrued expenses and other current liabilities, including 2,305 and 2,334 with affiliates at september 30, 2016 and december 31, 2015, respectively
                                          26,065,000                  
        common unitholders, 113,282,973 and 73,128,269 units issued and outstanding at september 30, 2016 and december 31, 2015, respectively
                                          639,450,000                  
        cost of product sold (exclusive of depreciation and amortization) — affiliates
                                          529,000 536,000 821,000  1,147,000 2,184,000 1,818,000     10,791,000 2,529,000 2,990,000 11,657,000   1,469,000 
        cost of product sold (exclusive of depreciation and amortization) — third parties
                                          19,282,000 35,513,000 15,560,000  13,354,000 13,240,000 23,951,000 62,528,000 13,202,000 17,109,000 19,462,000 47,284,000 10,446,000 9,608,000 30,854,000   6,022,000 
        selling, general and administrative expenses (exclusive of depreciation and amortization) — affiliates
                                          3,560,000 3,917,000 3,462,000  3,661,000 3,361,000 3,267,000 13,411,000 3,035,000 3,973,000 3,536,000 16,118,000 3,620,000 3,819,000 16,449,000   6,398,000 
        selling, general and administrative expenses (exclusive of depreciation and amortization) — third parties
                                          3,701,000 4,426,000 2,930,000  2,381,000 1,162,000 1,316,000 4,292,000 928,000 1,297,000 1,118,000 4,958,000 968,000 2,158,000 5,709,000   1,931,000 
        net income per common unit – basic
                                          -120 -150 250  -180 370 410  170 230 290  270  1,480    
        net income per common unit – diluted
                                          -120 -150 250  -180 370 410  170 230 290  270  1,480    
        prepaid expenses and other current assets, including 837 and 883 from affiliates at june 30, 2016 and december 31, 2015, respectively
                                           6,403,000                 
        other long-term assets, including 688 and 777 with affiliates at june 30, 2016 and december 31, 2015, respectively
                                           5,276,000                 
        accounts payable, including 2,075 and 1,940 due to affiliates at june 30, 2016 and december 31, 2015, respectively
                                           33,998,000                 
        personnel accruals, including 1,946 and 1,974 with affiliates at june 30, 2016 and december 31, 2015, respectively
                                           7,160,000                 
        accrued expenses and other current liabilities, including 1,545 and 2,334 with affiliates at june 30, 2016 and december 31, 2015, respectively
                                           11,571,000                 
        common unitholders, 113,282,973 and 73,128,269 units issued and outstanding at june 30, 2016 and december 31, 2015, respectively
                                           672,139,000                 
        prepaid expenses and other current assets, including 283 and 883 from affiliates at march 31, 2016 and december 31, 2015, respectively
                                            3,100,000                
        other long-term assets, including 732 and 777 with affiliates at march 31, 2016 and december 31, 2015, respectively
                                            3,881,000                
        accounts payable, including 1,617 and 1,940 due to affiliates at march 31, 2016 and december 31, 2015, respectively
                                            11,488,000                
        personnel accruals, including 1,230 and 1,974 with affiliates at march 31, 2016 and december 31, 2015, respectively
                                            3,162,000                
        accrued expenses and other current liabilities, including 919 and 2,334 with affiliates at march 31, 2016 and december 31, 2015, respectively
                                            4,776,000                
        common unitholders 73,128,269 units issued and outstanding at march 31, 2016 and december 31, 2015
                                            383,967,000                
        prepaid expenses and other current assets, including 883 and 1,848 from affiliates at december 31, 2015 and 2014, respectively
                                             4,089,000               
        other long-term assets, including 777 and 957 with affiliates at december 31, 2015 and 2014, respectively
                                             3,608,000               
        accounts payable, including 1,940 and 2,279 due to affiliates at december 31, 2015 and 2014, respectively
                                             11,103,000               
        personnel accruals, including 1,974 and 1,129 with affiliates at december 31, 2015 and 2014, respectively
                                             5,999,000               
        accrued expenses and other current liabilities, including 2,334 and 2,094 with affiliates at december 31, 2015 and 2014, respectively
                                             5,683,000               
        common unitholders, 73,128,269 and 73,122,997 units issued and outstanding at december 31, 2015 and 2014, respectively
                                             385,670,000               
        cost of product sold (exclusive of depreciation and amortization) - affiliates
                                             6,701,000               
        cost of product sold (exclusive of depreciation and amortization) - third parties
                                             58,488,000               
        selling, general and administrative expenses (exclusive of depreciation and amortization) - affiliates
                                             13,961,000               
        selling, general and administrative expenses (exclusive of depreciation and amortization) - third parties
                                             6,807,000               
        prepaid expenses and other current assets, including 694 and 1,848 from affiliates at september 30, 2015 and december 31, 2014, respectively
                                              2,785,000              
        deferred financing costs
                                                32,000 272,000 515,000 758,000 998,000 1,236,000 1,479,000      
        other long-term assets, including 822 and 957 with affiliates at september 30, 2015 and december 31, 2014, respectively
                                              3,484,000              
        accounts payable, including 2,230 and 2,279 due to affiliates at september 30, 2015 and december 31, 2014, respectively
                                              18,918,000              
        personnel accruals, including 2,186 and 1,129 with affiliates at september 30, 2015 and december 31, 2014, respectively
                                              5,364,000              
        accrued expenses and other current liabilities, including 2,088 and 2,094 with affiliates at september 30, 2015 and december 31, 2014, respectively
                                              5,471,000              
        common unitholders 73,122,997 units issued and outstanding at september 30, 2015 and december 31, 2014
                                              366,954,000              
        prepaid expenses and other current assets, including 876 and 1,848 from affiliates at june 30, 2015 and december 31, 2014, respectively
                                               4,687,000             
        other long-term assets, including 882 and 957 with affiliates at june 30, 2015 and december 31, 2014, respectively
                                               3,376,000             
        accounts payable, including 1,843 and 2,279 due to affiliates at june 30, 2015 and december 31, 2014, respectively
                                               14,637,000             
        personnel accruals, including 1,710 and 1,129 with affiliates at june 30, 2015 and december 31, 2014, respectively
                                               4,382,000             
        accrued expenses and other current liabilities, including 1,295 and 2,094 with affiliates at june 30, 2015 and december 31, 2014, respectively
                                               5,695,000             
        common unitholders 73,122,997 units issued and outstanding at june 30, 2015 and december 31, 2014
                                               408,932,000             
        prepaid expenses and other current assets, including 2,346 and 1,848 from affiliates at march 31, 2015 and december 31, 2014, respectively
                                                7,264,000            
        other long-term assets, including 912 and 957 with affiliates at march 31, 2015 and december 31, 2014, respectively
                                                3,211,000            
        accounts payable, including 1,752 and 2,279 due to affiliates at march 31, 2015 and december 31, 2014, respectively
                                                13,462,000            
        personnel accruals, including 1,205 and 1,129 with affiliates at march 31, 2015 and december 31, 2014, respectively
                                                3,226,000            
        accrued expenses and other current liabilities, including 774 and 2,094 with affiliates at march 31, 2015 and december 31, 2014, respectively
                                                6,065,000            
        common unitholders 73,122,997 units issued and outstanding at march 31, 2015 and december 31, 2014
                                                414,814,000            
        prepaid expenses and other current assets, including 1,848 and 3,104 from affiliates at december 31, 2014 and 2013, respectively
                                                 6,914,000           
        other long-term assets, including 957 and 1,136 with affiliates at december 31, 2014 and 2013, respectively
                                                 3,086,000           
        accounts payable, including 2,279 and 4,289 due to affiliates at december 31, 2014 and 2013, respectively
                                                 12,747,000           
        personnel accruals, including 1,129 and 2,025 with affiliates at december 31, 2014 and 2013, respectively
                                                 3,785,000           
        accrued expenses and other current liabilities, including 2,094 and 323 with affiliates at december 31, 2014 and 2013, respectively
                                                 9,562,000           
        other long-term liabilities, 67 with affiliates at december 31, 2013
                                                 201,000  693,000         
        common unitholders, 73,122,997 and 73,112,951 units issued and outstanding at december 31, 2014 and 2013, respectively
                                                 414,968,000           
        cost of product sold — affiliates
                                                 9,424,000 2,232,000 2,327,000 2,246,000        
        net income per common unit — basic
                                                 1,040    1,620  410     
        net income per common unit — diluted
                                                 1,040    1,620  410     
        prepaid expenses and other current assets, including 240 and 3,104 from affiliates at september 30, 2014 and december 31, 2013, respectively
                                                  4,759,000          
        other long-term assets, including 1,002 and 1,136 with affiliates at september 30, 2014 and december 31, 2013, respectively
                                                  2,961,000          
        accounts payable, including 1,919 and 4,289 due to affiliates at september 30, 2014 and december 31, 2013, respectively
                                                  14,394,000          
        personnel accruals, including 1,275 and 2,025 with affiliates at september 30, 2014 and december 31, 2013, respectively
                                                  3,780,000          
        accrued expenses and other current liabilities, including 2,430 and 323 with affiliates at september 30, 2014 and december 31, 2013, respectively
                                                  8,038,000          
        other long-term liabilities, including 67 with affiliates at december 31, 2013
                                                  420,000          
        common unitholders, 73,116,639 and 73,112,951 units issued and outstanding at september 30, 2014 and december 31, 2013, respectively
                                                  409,932,000          
        prepaid expenses and other current assets, including 436 and 3,104 from affiliates at june 30, 2014 and december 31, 2013, respectively
                                                   6,147,000         
        other long-term assets, including 1,046 and 1,136 with affiliates at june 30, 2014 and december 31, 2013, respectively
                                                   2,836,000         
        accounts payable, including 2,557 and 4,289 due to affiliates at june 30, 2014 and december 31, 2013, respectively
                                                   16,247,000         
        personnel accruals, including 1,036 and 2,025 with affiliates at june 30, 2014 and december 31, 2013, respectively
                                                   2,948,000         
        accrued expenses and other current liabilities, including 2,713 and 323 with affiliates at june 30, 2014 and december 31, 2013, respectively
                                                   9,970,000         
        common unitholders, 73,113,537 and 73,112,951 units issued and outstanding at june 30, 2014 and december 31, 2013, respectively
                                                   421,481,000         
        prepaid expenses and other current assets, including 2,182 and 3,104 from affiliates at march 31, 2014 and december 31, 2013, respectively
                                                    8,759,000        
        other long-term assets, including 1,091 and 1,136 with affiliates at march 31, 2014 and december 31, 2013, respectively
                                                    2,692,000        
        accounts payable, including 2,924 and 4,289 due to affiliates at march 31, 2014 and december 31, 2013, respectively
                                                    14,062,000        
        personnel accruals, including 146 and 2,025 with affiliates at march 31, 2014 and december 31, 2013, respectively
                                                    2,271,000        
        accrued expenses and other current liabilities, including 1,643 and 323 with affiliates at march 31, 2014 and december 31, 2013, respectively
                                                    10,170,000        
        other long-term liabilities, including 17 and 67 with affiliates at march 31, 2014 and december 31, 2013, respectively
                                                    878,000        
        common unitholders, 73,112,951 units issued and outstanding at march 31, 2014 and december 31, 2013
                                                    431,994,000        
        direct operating expenses — affiliates
                                                    753,000        
        prepaid expenses and other current assets, including 3,104 and 605 from affiliates at december 31, 2013 and 2012, respectively
                                                     10,025,000       
        intangible assets
                                                     26,000 27,000 34,000 36,000 38,000 41,000 43,000 
        other long-term assets, including 1,136 and 1,315 with affiliates at december 31, 2013 and 2012, respectively
                                                     2,487,000       
        accounts payable, including 4,289 and 3,220 due to affiliates at december 31, 2013 and 2012, respectively
                                                     17,137,000       
        personnel accruals, including 2,025 and 1,865 with affiliates at december 31, 2013 and 2012, respectively
                                                     4,494,000       
        accrued expenses and other current liabilities, including 323 and 553 with affiliates at december 31, 2013 and 2012, respectively
                                                     5,059,000       
        other long-term liabilities, including 67 and 355 with affiliates at december 31, 2013 and 2012, respectively
                                                     1,147,000       
        common unitholders, 73,112,951 and 73,065,143 units issued and outstanding at december 31, 2013 and 2012, respectively
                                                     441,819,000       
        general partner's interest
                                                     1,000       
        insurance recovery — business interruption
                                                           -2,870,000 
        net income subsequent to initial public offering
                                                        108,351,000    
        prepaid expenses and other current assets, including 1,045 and 605 with affiliates at september 30, 2013 and december 31, 2012, respectively
                                                      5,641,000      
        other long-term assets, including 1,181 and 1,315 with affiliates at september 30, 2013 and december 31, 2012, respectively
                                                      2,372,000      
        accounts payable, including 3,327 and 3,220 with affiliates at september 30, 2013 and december 31, 2012, respectively
                                                      19,777,000      
        personnel accruals, including 1,314 and 1,865 with affiliates at september 30, 2013 and december 31, 2012, respectively
                                                      3,749,000      
        accrued expenses and other current liabilities, including 405 and 553 with affiliates at september 30, 2013 and december 31, 2012, respectively
                                                      4,872,000      
        other long-term liabilities, including 118 and 355 with affiliates at september 30, 2013 and december 31, 2012, respectively
                                                      1,332,000      
        common unitholders, 73,078,048 and 73,065,143 units issued and outstanding at september 30, 2013 and december 31, 2012, respectively
                                                      440,584,000      
        general partner’s interest
                                                      1,000 1,000 1,000 1,000 1,000  
        income tax (benefit) expense
                                                      -3,000      
        prepaid expenses and other current assets including 438 and 572 from affiliates at march 31, 2012 and december 31, 2011, respectively
                                                       2,725,000     
        deferred financing cost
                                                       2,926,000 3,164,000 3,387,000 3,697,000  
        other long-term assets, including 1,450 and 1,495 with affiliates at march 31, 2012 and december 31, 2011, respectively
                                                       1,864,000     
        accounts payable, including 2,426 and 2,064 due to affiliates at march 31, 2012 and december 31, 2011, respectively
                                                       20,796,000     
        personnel accruals, including 420 and 812 with affiliates at march 31, 2012 and december 31, 2011, respectively
                                                       1,449,000     
        accrued expenses and other current liabilities, including 535 and 549 with affiliates at march 31, 2012 and december 31, 2011, respectively
                                                       13,444,000     
        other long-term liabilities, including 721 and 850 with affiliates at march 31, 2012 and december 31, 2011, respectively
                                                       2,186,000     
        common unitholders, 73,030,936 units issued and outstanding at march 31, 2012 and december 31, 2011
                                                       480,424,000     
        prepaid expenses and other current assets including 572 and 2,587 from affiliates at december 31, 2011 and 2010, respectively
                                                        2,311,000    
        other long-term assets, including 1,495 and 0 with affiliates at december 31, 2011 and 2010, respectively
                                                        1,782,000    
        accounts payable, including 2,064 and 3,323 due to affiliates at december 31, 2011 and 2010, respectively
                                                        15,869,000    
        personnel accruals, including 812 and 0 with affiliates at december 31, 2011 and 2010, respectively
                                                        2,744,000    
        accrued expenses and other current liabilities, including 549 and 0 with affiliates at december 31, 2011 and 2010, respectively
                                                        14,822,000    
        other long-term liabilities, including 850 and 0 with affiliates at december 31, 2011 and 2010, respectively
                                                        2,366,000    
        special general partner’s interest, 30,303,000 units issued and outstanding at december 31, 2010
                                                            
        limited partner’s interest, 30,333 units issued and outstanding at december 31, 2010
                                                            
        managing general partner’s interest
                                                            
        common unitholders, 73,030,936 units issued and outstanding at december 31, 2011
                                                        491,876,000    
        insurance recovery – business interruption
                                                        -3,360,000    
        prepaid expenses and other current assets including 353 and 2,587 from affiliates at september 30, 2011 and december 31, 2010, respectively
                                                         2,825,000   
        other long-term assets, including 1,406 and 0 with affiliates at september 30, 2011 and december 31, 2010, respectively
                                                         1,579,000   
        accounts payable, including 2,535 and 3,323 due to affiliates at september 30, 2011 and december 31, 2010, respectively
                                                         15,148,000   
        personnel accruals, including 418 and 0 with affiliates at september 30, 2011 and december 31, 2010, respectively
                                                         2,242,000   
        accrued expenses and other current liabilities, including 513 and 0 with affiliates at september 30, 2011 and december 31, 2010, respectively
                                                         19,097,000   
        other long-term liabilities, including 896 and 0 with affiliates at september 30, 2011 and december 31, 2010, respectively
                                                         2,484,000   
        common unitholders, 73,002,956 units issued and outstanding at september 30, 2011
                                                         491,669,000   
        prepaid expenses and other current assets including 1,027 and 2,587 from affiliates at june 30, 2011 and december 31, 2010, respectively
                                                          3,738,000  
        other long-term assets, including 1,447 and 0 with affiliates at june 30, 2011 and december 31, 2010, respectively
                                                          1,505,000  
        accounts payable, including 2,856 and 3,323 due to affiliates at june 30, 2011 and december 31, 2010, respectively
                                                          12,523,000  
        personnel accruals
                                                          1,872,000 1,421,000 
        accrued expenses and other current liabilities, including 525 and 0 with affiliates at june 30, 2011 and december 31, 2010, respectively
                                                          13,126,000  
        other long-term liabilities, including 1,020 and 0 with affiliates at june 30, 2011 and december 31, 2010, respectively
                                                          1,054,000  
        common unitholders, 73,002,956 units issued and outstanding at june 30, 2011
                                                          484,194,000  
        prepaid expenses and other current assets including 164 and 2,587 from affiliates at march 31, 2011 and december 31, 2010, respectively
                                                           5,889,000 
        accounts payable, including 2,505 and 3,323 due to affiliates at march 31, 2011 and december 31, 2010, respectively
                                                           12,479,000 
        special general partner’s interest, 30,303,000 units issued and outstanding
                                                           419,270,000 
        limited partner’s interest, 30,333 units issued and outstanding
                                                           422,000 
        managing partner’s interest
                                                           3,854,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 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 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 
                                                               
          cash flows from operating activities:
                                                               
          net income
        49,913,000 -10,266,000 43,072,000 38,768,000 27,088,000 18,295,000 3,807,000 26,219,000 12,579,000 9,975,000 731,000 59,857,000 101,870,000 95,366,000 -19,808,000 117,582,000 93,661,000 61,490,000                  -3,445,000 -10,336,000 -14,544,000 -13,431,000 -17,005,000 18,042,000 18,730,000 -13,478,000 27,016,000 29,774,000 24,847,000 12,719,000 17,130,000 21,453,000 27,921,000 30,244,000 41,217,000 36,285,000 38,211,000 16,734,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                               
          depreciation and amortization
        19,963,000 23,008,000 19,957,000 20,861,000 18,041,000 24,033,000 24,732,000 20,040,000 19,291,000 20,636,000 24,119,000 19,754,000 15,211,000 19,324,000 22,127,000 21,221,000 19,465,000 20,832,000 17,406,000 21,119,000 14,123,000 19,080,000 18,029,000 23,371,000 15,597,000 19,807,000 18,418,000 25,030,000 16,584,000 18,709,000 16,035,000 20,405,000 16,426,000 19,109,000 19,483,000 19,982,000 15,412,000 17,259,000 16,452,000 17,559,000 6,976,000 7,214,000 7,409,000 7,010,000 6,819,000 6,977,000 6,813,000 6,792,000 6,667,000 7,055,000 5,438,000 4,921,000 4,663,000 4,648,000 4,637,000 
          share-based compensation
        2,994,000 2,235,000 3,271,000 2,827,000 1,472,000 1,482,000 714,000 675,000 2,027,000 269,000 3,830,000 2,203,000 1,933,000 6,638,000 7,273,000 -721,000 12,074,000 7,610,000 5,488,000 6,379,000 3,592,000 1,156,000 48,000 308,000 -477,000 475,000 752,000 1,110,000 1,108,000 322,000 1,195,000 1,330,000 170,000 200,000 118,000 29,000 167,000 287,000 -65,000 565,000 153,000 52,000 16,000 116,000 173,000 -30,000 -22,000 62,000 147,000 427,000 122,000     
          other adjustments
        972,000 -1,577,000 901,000 467,000 144,000 -430,000 183,000 182,000 141,000 -1,786,000 1,256,000 250,000 502,000 -1,232,000 167,000 345,000 613,000 -3,000,000 334,000 1,549,000 1,259,000 -3,125,000 1,709,000 1,118,000 1,262,000 -5,261,000 3,148,000 896,000 1,212,000                           
          changes in working capital:
                                                               
          accounts receivable
        6,114,000 -11,142,000 2,675,000 -8,848,000 23,575,000                            -4,419,000 2,506,000 2,110,000 665,000 -1,194,000 -1,219,000 3,350,000 2,164,000 -2,110,000 672,000 2,529,000 -581,000 -2,664,000 -467,000 1,249,000 2,725,000 -3,078,000 305,000 3,637,000 -1,737,000 -1,735,000 1,528,000 -2,375,000 
          inventories
        -3,931,000 -2,406,000 -7,095,000 5,488,000 -3,790,000                            -1,605,000 2,335,000 3,161,000 112,000 -3,106,000 -818,000 -2,371,000 29,678,000 4,937,000 -813,000 -995,000 -1,850,000 1,743,000 -2,665,000 -2,036,000 2,622,000 -471,000 -226,000 1,462,000 2,544,000 -3,085,000 -1,894,000 -990,000 
          prepaid expenses and other current assets
        1,015,000 220,000 -59,000 -157,000 -677,000                            549,000 -669,000 177,000 859,000 685,000 -1,808,000 1,614,000 1,882,000 722,000 -1,547,000 1,660,000 2,370,000 -350,000 -2,157,000 1,388,000 2,614,000 1,266,000 -4,385,000 -414,000 500,000 976,000 128,000 1,708,000 
          accounts payable
        -2,962,000 9,755,000 -4,401,000 845,000 -464,000                            -786,000 2,243,000 -3,627,000 441,000 -1,372,000 4,214,000 -7,375,000 8,307,000 648,000 -4,935,000 2,418,000 -67,000 975,000 -841,000 -1,155,000 924,000 -3,895,000 580,000 3,274,000 -1,145,000 -884,000 -343,000 -3,499,000 
          deferred revenue
        -997,000 -14,491,000 25,201,000 -29,382,000 -15,481,000                            10,635,000 -6,466,000 16,500,000 -28,445,000 19,315,000 7,277,000 3,968,000 -29,349,000 -2,291,000 728,000 490,000 -4,431,000 -7,271,000 11,850,000 1,364,000 -9,566,000 9,269,000 -101,000 7,004,000 -11,531,000 17,580,000 -23,726,000 8,036,000 
          other current liabilities
        2,694,000 -18,783,000 8,222,000 -6,767,000 5,483,000                                                   
          net cash from operating activities
        75,775,000 -21,599,000 91,744,000 24,102,000 55,391,000 12,791,000 86,725,000 8,608,000 42,417,000 -17,863,000 70,102,000 60,844,000 130,443,000 -2,771,000 88,624,000 48,684,000 166,927,000 68,457,000 97,289,000 -2,572,000 25,551,000 -9,477,000 22,439,000 -20,929,000 27,707,000 -29,515,000 33,991,000 -17,243,000 51,924,000 5,116,000 39,588,000 -26,956,000 14,486,000 -17,704,000 21,167,000 -23,118,000 30,055,000 -2,540,000 18,355,000 5,514,000 23,640,000 21,331,000 1,136,000 30,589,000 25,365,000 39,235,000 19,689,000 24,353,000 35,601,000 32,486,000 53,814,000 31,956,000 57,703,000 18,044,000 32,150,000 
          cash flows from investing activities:
                                                               
          capital expenditures
        -17,046,000 -23,568,000 -11,616,000 -5,747,000 -9,871,000 -18,346,000 -4,465,000 -6,168,000 -8,095,000 -10,452,000 -6,153,000 -4,153,000 -3,438,000 -11,227,000 -19,670,000 -5,872,000 -7,899,000 -10,346,000 -4,862,000 -2,392,000 -2,994,000 -3,424,000 -4,970,000 -3,494,000 -6,710,000 -9,169,000 -3,730,000 -2,257,000 -3,500,000 -4,784,000 -6,399,000 -5,903,000 -2,720,000 -3,100,000 -2,840,000 -4,504,000 -4,112,000 -4,963,000 -6,399,000 -10,136,000 -1,733,000 -4,595,000 -6,395,000 -3,372,000 -2,661,000 -7,577,000 -6,008,000 -4,106,000 -3,385,000 -7,910,000 -22,274,000 -8,606,000 -4,492,000 -4,006,000 -2,041,000 
          free cash flows
        58,729,000 -45,167,000 80,128,000 18,355,000 45,520,000 -5,555,000 82,260,000 2,440,000 34,322,000 -28,315,000 63,949,000 56,691,000 127,005,000 -13,998,000 68,954,000 42,812,000 159,028,000 58,111,000 92,427,000 -4,964,000 22,557,000 -12,901,000 17,469,000 -24,423,000 20,997,000 -38,684,000 30,261,000 -19,500,000 48,424,000 332,000 33,189,000 -32,859,000 11,766,000 -20,804,000 18,327,000 -27,622,000 25,943,000 -7,503,000 11,956,000 -4,622,000 21,907,000 16,736,000 -5,259,000 27,217,000 22,704,000 31,658,000 13,681,000 20,247,000 32,216,000 24,576,000 31,540,000 23,350,000 53,211,000 14,038,000 30,109,000 
          return of equity method investment
        4,211,000 888,000 885,000 864,000 4,024,000 807,000 840,000 753,000 2,778,000 802,000 787,000                                             
          other investing activities
                                                               
          net cash from investing activities
        -12,835,000 -22,668,000 -10,729,000 -4,883,000 -5,807,000 -17,535,000 -3,627,000 -5,413,000 -5,317,000 -9,650,000 -5,366,000 -3,268,000 15,562,000 -11,222,000 -19,671,000 -5,831,000 -7,899,000 -10,136,000 -4,862,000 -2,350,000 -2,994,000 -3,424,000 -4,969,000 -3,495,000 -6,662,000 -9,131,000 -3,730,000 -2,168,000 -3,500,000 -4,781,000 -6,399,000 -5,903,000 -2,548,000 -3,100,000 -2,840,000 -4,504,000 -4,112,000 -4,963,000 -6,399,000 -74,005,000 -1,733,000 -4,595,000 -6,349,000 -3,340,000 -2,661,000 -7,558,000 -6,008,000 -4,015,000 -3,385,000 -7,910,000 -22,274,000 -8,606,000 -1,972,000 -4,006,000 -1,816,000 
          cash flows from financing activities:
                                                               
          cash distributions to common unitholders - affiliates
        -1,541,000  -16,199,000 -9,716,000 -6,811,000  -7,395,000 -7,472,000 -6,539,000  -16,112,000 -40,594,000 -40,866,000  -39,115,000 -8,796,000 -20,394,000          -5,449,000 -2,724,000 -4,670,000                           
          cash distributions to common unitholders - non-affiliates
        -2,370,000  -24,916,000 -14,172,000 -11,686,000  -12,688,000 -12,821,000 -11,218,000  -27,646,000 -69,647,000 -70,115,000  -67,109,000 -15,091,000 -35,576,000          -10,411,000 -5,205,000 -8,924,000                           
          principal payments of finance leases
        -186,000                                                       
          net cash from financing activities
        -4,097,000 -42,673,000 -39,232,000 -26,594,000 -18,666,000 -14,938,000 -20,083,000 -20,293,000 -17,757,000 -16,383,000 -44,260,000 -110,240,000 -110,981,000 -18,709,000 -106,224,000 -23,888,000 -134,197,000 -46,474,000 -34,577,000 -4,820,000 -555,000 -4,825,000 -1,742,000 -1,033,000 -25,000 -8,027,000 -15,860,000 -7,929,000 -13,594,000       -2,198,000 -22,921,000 92,773,000 -19,895,000 -19,000 -28,518,000 -32,906,000 -29,980,000 -19,767,000 -24,147,000 -27,787,000 -31,439,000 -26,600,000 -42,942,000 -41,889,000 -29,968,000 144,344,000 -1,710,000 
          net increase in cash and cash equivalents
        58,843,000 -86,940,000 41,783,000 -7,375,000 30,918,000 -19,682,000 63,015,000 -17,098,000 19,343,000 -43,896,000 20,476,000 -52,664,000 35,024,000 -32,702,000 -37,271,000 18,965,000 24,831,000  57,850,000 -9,742,000 22,002,000 -17,726,000 15,728,000 -25,457,000 21,020,000 -46,673,000 14,401,000 -27,340,000 34,830,000 335,000   11,938,000 -20,804,000 18,327,000 -29,888,000 25,943,000 -9,701,000 -10,965,000     -5,657,000 -7,276,000 11,910,000 -10,466,000 -7,449,000 777,000  -11,402,000 -18,539,000 25,763,000 158,382,000 28,624,000 
          cash and cash equivalents, beginning of period
        69,243,000 90,857,000 45,279,000 86,339,000 112,516,000 30,559,000 36,994,000 61,776,000 49,173,000 55,595,000 49,967,000 79,914,000 85,142,000 236,975,000 42,745,000 
          cash and cash equivalents, end of period
        128,086,000 -86,940,000 41,783,000 -7,375,000 121,775,000 -19,682,000 63,015,000 -17,098,000 64,622,000 -43,896,000 20,476,000 -52,664,000 121,363,000 -32,702,000 -37,271,000 18,965,000 137,347,000 11,847,000 57,850,000 -9,742,000 52,561,000 -17,726,000 15,728,000 -25,457,000 58,014,000 -46,673,000 14,401,000 -27,340,000 96,606,000 335,000 33,189,000 -32,859,000 61,111,000 -20,804,000 18,327,000 -29,888,000 81,538,000 -9,701,000 -10,965,000 24,282,000 51,979,000 16,717,000 -33,731,000 -5,657,000 72,638,000 11,910,000 -10,466,000 -7,449,000 85,919,000 -2,024,000 225,573,000 -18,539,000 25,763,000 158,382,000 71,369,000 
          amortization of deferred financing costs and original issue discount
                                        806,000 2,094,000 -535,000 752,000 735,000 722,000 646,000                 
          loss on asset disposals
                                                               
          proceeds from the sale of assets
                                                               
          cash distributions to common unitholders – affiliates
                                           -6,616,000 -10,508,000 -10,509,000 -15,179,000 -17,514,000 -15,957,000  -12,844,000 -14,789,000 -16,736,000       
          cash distribution to common unitholders – non-affiliates
                                                               
          other financing activities
           -2,706,000 -169,000             -18,000 -26,000 -26,000 -26,000 -26,000 -25,000 -25,000 -25,000                               
          change in working capital:
                                                               
          proceeds from sale of assets
           40,000          -1,000       1,000 -1,000 48,000     172,000         46,000   19,000        
          change in assets and liabilities:
                                                               
          loss on asset disposal
                                                               
          loss on debt extinguishment
                                                               
          changes in assets and liabilities:
                                                               
          other long-term assets and liabilities
                                                               
          principal payments on senior secured notes
                     -65,000,000 -15,000,000 -15,000,000                                     
          payment of deferred financing costs
                 1,000    1,000 -1,000 -829,000 -159,000 -1,179,000                                    
          repurchase of common units
                     -12,398,000 -529,000 -4,799,000 -1,269,000                                 
          current assets and liabilities
              56,488,000 -38,208,000 8,780,000  39,862,000 -21,597,000 10,893,000  79,963,000 -88,883,000 39,991,000  36,861,000 -49,634,000 33,782,000  20,407,000 -45,671,000 32,645,000  34,105,000 -63,832,000 39,010,000  33,911,000                         
          non-current assets and liabilities
              801,000 -300,000 -401,000  304,000 377,000 34,000  -1,098,000 -860,000 495,000  1,635,000 3,232,000 -1,821,000  1,198,000 588,000 -585,000  544,000 585,000 89,000  704,000                         
          accrued expenses and other current liabilities
                                        11,307,000 -12,960,000 13,367,000 -14,392,000 9,016,000 -13,493,000 15,223,000 -14,958,000 -4,273,000 543,000 659,000 449,000 -4,844,000 1,519,000 -1,203,000 -208,000 3,445,000 894,000 1,944,000 -3,706,000 1,853,000 2,170,000 3,161,000 
          proceeds on issuance of senior secured notes
                                                               
          loss on extinguishment of debt
                      628,000  536,000                   -254,000                 
          return on equity method investment
                    19,000,000                                           
          goodwill impairment
                                                             
          proceeds from issuance of senior secured notes
                                                              
          net increase in cash and cash equivalents and restricted cash
                                                               
          net loss
                           7,020,000 -25,384,000 -16,882,000   -20,735,000 -24,882,000   -6,079,000 -1,371,000 -13,146,000 -16,459,000 -19,051,000                       
          adjustments to reconcile net loss to net cash from operating activities:
                                                               
          amortization of debt fair value adjustment
                                                             
          other long-term assets
                                        188,000 721,000 232,000 -80,000 178,000 -894,000 -226,000 -132,000 -131,000 -132,000 -117,000 -145,000 93,000 -130,000 579,000 -118,000 -182,000 -117,000 -82,000 -215,000 -85,000   
          other assets and liabilities
                                                               
          acquisition of east dubuque facility, net of cash acquired
                                                               
          other investing activity
                                                               
          principal and premium payments on 2021 notes
                                             -1,701,000                 
          principal payment on related party credit facility
                                                               
          proceeds on related party credit facility
                                                               
          principal payments on long-term debt
                                                             
          payment of revolving debt
                                                             
          payment of financing costs
                                             -497,000 -3,663,000 -6,378,000 -150,000           -4,730,000 -95,000 
          proceeds on issuance of 2023 notes, net of original issue discount
                                                             
          contribution from affiliate
                                                             
          purchase of noncontrolling interest, net of issuance costs
                                                               
          other non-cash items
                                      889,000                         
          cash distributions to common unitholders – non-affiliates
                                             -12,642,000 -20,078,000 -9,236,000  -13,339,000 -15,392,000 -14,023,000  -11,284,000 -12,993,000 -14,703,000       
          net decrease in cash and cash equivalents
                                                2,012,000 16,717,000              
          allowance for doubtful accounts
                                        25,000 -16,000 -15,000 10,000 3,000 5,000 -1,000 -216,000 231,000 6,000 3,000 -8,000 -8,000 19,000 -15,000 -25,000 5,000 -28,000 4,000 12,000 9,000 8,000 4,000 
          loss on disposition of fixed assets
                                        54,000  19,000 26,000 13,000  83,000    -46,000    -277,000    7,000 151,000 631,000 
          share-based compensation – affiliates
                                        110,000 1,073,000 518,000 400,000 516,000 668,000 279,000 404,000 495,000 510,000 344,000 457,000 679,000  37,000 774,000 786,000       
          other long-term liabilities
                                        77,000 825,000 -45,000 -32,000 23,000 37,000 209,000     -8,000 6,000 -50,000 5,000 -19,000 -49,000 4,000 -188,000 -170,000 3,497,000 -2,877,000 49,000 
          supplemental disclosures:
                                                               
          cash paid for income taxes, net of refunds
                                        -4,000                       
          non-cash investing and financing activities:
                                                               
          construction in progress additions included in accounts payable
                                        2,203,000  -767,000 -806,000 2,181,000  -3,671,000 4,298,000 767,000 -2,881,000 1,863,000 1,242,000 806,000 -807,000 -698,000 1,262,000 1,309,000 -3,611,000      
          change in accounts payable related to construction in progress additions
                                        1,314,000  -767,000 -806,000 -1,690,000             -3,612,000      
          loss on disposition of assets
                                                               
          acquisition of cvr nitrogen, lp, net of cash acquired
                                                             
          principal payment on crllc facility
                                                             
          proceeds on crllc facility
                                                             
          purchase of noncontrolling interest
                                                             
          redemption of common units
                                                     -26,000 -19,000   -292,000      
          cash paid for income taxes
                                                 22,000 32,000 1,000 8,000  -5,000   
          cash paid for interest, net of capitalized interest of 150 and 422 in 2017 and 2016, respectively
                                                               
          reduction of proceeds from 2023 notes from original issue discount
                                                               
          fair value of common units issued in a business combination
                                                              
          fair value of debt assumed in a business combination
                                                              
          cash paid for interest, net of capitalized interest of 109 and 401 in 2017 and 2016, respectively
                                                               
          cash paid for interest
                                                1,545,000               
          cash paid for interest, net of capitalized interest of 422 and 9 in 2016 and 2015, respectively
                                                               
          change in accounts payable related to construction in progress
                                              -3,671,000 118,000 -263,000  1,863,000 1,242,000 -260,000  -698,000 1,261,000 -556,000       
          cash paid for interest, net of capitalized interest of 401 in 2016
                                                               
          reduction of proceeds from 2023 notes from underwriting discount
                                                               
          amortization of deferred financing costs
                                                241,000 243,000 242,000 239,000 240,000 243,000 243,000 240,000 238,000 243,000 238,000 236,000 247,000   
          cash paid for interest, net of capitalized interest of 9, 85 and 597 in 2015, 2014 and 2013, respectively
                                                               
          cash paid for interest, net of capitalized interest of 9 and 85 in 2015 and 2014, respectively
                                                               
          cash paid for interest, net of capitalized interest of 79 in 2014
                                                               
          cash paid for interest, net of capitalized interest of 35 in 2014
                                                    1,477,000           
          share-based compensation — affiliates
                                                          1,124,000  902,000 909,000 4,609,000 
          insurance receivable
                                                           -3,010,000 -2,870,000 
          insurance proceeds from uan reactor rupture
                                                           2,520,000 225,000 
          cash distributions to common unitholders — affiliates
                                                               
          cash distribution to common unitholders — non-affiliates
                                                               
          cash paid for interest, net of capitalized interest of 85, 597 and 3,205 in 2014, 2013 and 2012, respectively
                                                               
          cash paid for interest, net of capitalized interest of 85 and 539 in 2014 and 2013, respectively
                                                               
          cash paid for interest, net of capitalized interest of 79 and 467 in 2014 and 2013, respectively
                                                               
          cash paid for interest, net of capitalized interest of 35 and 422 in 2014 and 2013, respectively
                                                        1,440,000       
          business interruption insurance proceeds
                                                           490,000 555,000 2,315,000 
          proceeds from issuance of long-term debt
                                                             
          distributions to affiliates
                                                          -29,941,000 -29,126,000 -20,724,000   
          purchase of managing general partner incentive distribution rights
                                                             
          proceeds from issuances of common units, net of offering costs
                                                           -256,000   
          cash paid for interest, net of capitalized interest of 597, 3,205 and 1,335 in 2013, 2012 and 2011, respectively
                                                               
          share-based compensation - affiliates
                                                               
          cash paid for interest, net of capitalized interest of 539 and 2,147 in 2013 and 2012, respectively
                                                               
          deferred costs of initial public offering
                                                              -1,615,000 
          cash distribution to public unitholders — non-affiliates
                                                          -13,001,000     
          cash paid for interest, net of capitalized interest of 545 and 0 in 2012 and 2011, respectively
                                                          1,300,000     
          accrual of construction in progress additions
                                                          -2,970,000 1,866,000 3,765,000 131,000 -1,780,000 
          insurance proceeds
                                                               
          due from affiliate
                                                               
          cash distribution to public unitholders – non-affiliates
                                                               
          cash paid for interest, net of capitalized interest of 1,335, 0 and 0 in 2011, 2010 and 2009, respectively
                                                               
          partners’ property distribution
                                                               
          cash distributions to public unitholders — non-affiliates
                                                               
          cash paid for interest, net of capitalized interest of 946 and 0 in 2011 and 2010, respectively
                                                               
          non-cash investing activities:
                                                               
          cash paid for interest, net of capitalized interest of 302 and 0 in 2011 and 2010, respectively