CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 30,559,000	$ 36,994,000
Accounts receivable	36,896,000	34,264,000
Inventories	42,349,000	48,296,000
Prepaid expenses and other current assets	8,410,000	5,406,000
Total current assets	118,214,000	124,960,000
Property, plant, and equipment, net	897,847,000	951,959,000
Goodwill	0	40,969,000
Other long-term assets	16,819,000	20,067,000
Total assets	1,032,880,000	1,137,955,000
Current liabilities:
Current portion of long-term debt	2,240,000	0
Accounts payable	19,544,000	21,069,000
Accounts payable to affiliates	5,217,000	2,578,000
Deferred revenue	30,631,000	27,841,000
Other current liabilities	18,709,000	24,043,000
Total current liabilities	76,341,000	75,531,000
Long-term liabilities:
Long-term debt, net of current portion	633,942,000	632,406,000
Other long-term liabilities	8,356,000	10,474,000
Total long-term liabilities	642,298,000	642,880,000
Commitments and contingencies (See Note 8)
Partners’ capital:
Common unitholders, 10,705,710 and 11,328,297 units issued and outstanding as of December 31, 2020 and 2019, respectively	314,240,000	419,543,000
General partner interest	1,000	1,000
Total partners’ capital	314,241,000	419,544,000
Total liabilities and partners’ capital	$ 1,032,880,000	$ 1,137,955,000