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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Current assets:    
Cash and cash equivalents $ 51,773 $ 50,076
Accounts receivable, net 50,167 66,455
Accounts receivable—affiliates 6,864 9,494
Inventory 7,835 5,814
Prepaid expenses and other 4,490 4,279
Total current assets 121,129 136,118
Land 25,022 25,243
Plant and equipment, net 61,239 60,093
Mineral rights, net 1,094,027 1,781,852
Intangible assets, net 56,927 60,733
Equity in unconsolidated investment 261,942 264,020
Long-term contracts receivable—affiliate 47,359 50,008
Goodwill 0 52,012
Other assets 15,306 14,645
Other assets—affiliate 1,124 0
Total assets 1,684,075 2,444,724
Current liabilities:    
Accounts payable 8,465 22,465
Accounts payable—affiliates 1,464 950
Accrued liabilities 45,735 43,533
Current portion of long-term debt, net 80,983 80,983
Total current liabilities 136,647 147,931
Deferred revenue 80,812 73,207
Deferred revenue—affiliates 82,853 87,053
Long-term debt, net 1,284,083 1,374,336
Long-term debt, net—affiliate 19,930 19,904
Other non-current liabilities $ 6,808 $ 22,138
Commitments and contingencies
Partners’ capital:    
Common unitholders’ interest (12.2 million units outstanding) $ 79,094 $ 709,019
General partner’s interest (606) 12,245
Accumulated other comprehensive loss (2,152) (459)
Total partners’ capital 76,336 720,805
Non-controlling interest (3,394) (650)
Total capital 72,942 720,155
Total liabilities and capital $ 1,684,075 $ 2,444,724