CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 189	$ 295
Accounts receivable, trade, net of allowance of $1,192 and $1,253, respectively	87,653	79,452
Due from affiliates, net	2,833	2,322
Total current assets	90,675	82,069
Property, plant and equipment	2,662,837	2,399,934
Accumulated depreciation	(829,399)	(721,788)
Property, plant and equipment, net	1,833,438	1,678,146
Goodwill	127,757	127,757
Intangible and other assets, net	114,657	121,472
Total assets	2,166,527	2,009,444
Current liabilities:
Accrued liabilities	6,879	4,979
Accrued interest	12,113	11,876
Current portion of interest rate swaps	5,994	4,958
Total current liabilities	24,986	21,813
Long-term debt	1,382,371	1,300,295
Deferred income taxes	1,210	1,527
Other long-term liabilities	4,077	2,468
Total liabilities	$ 1,412,644	$ 1,326,103
Commitments and contingencies (Note 13)
Partners' capital:
Common units, 59,789,158 and 55,724,022 units issued, respectively	$ 740,483	$ 668,714
General partner units, 2% interest with 1,209,562 and 1,129,221 equivalent units issued and outstanding, respectively	21,171	19,542
Accumulated other comprehensive loss	(6,020)	(3,438)
Treasury units, 72,674 and 61,665 common units, respectively	(1,751)	(1,477)
Total partners' capital	753,883	683,341
Total liabilities and partners' capital	$ 2,166,527	$ 2,009,444