CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 251	$ 142
Accounts receivable, trade, net of allowance of $557 and $1,135, respectively	48,364	38,084
Due from affiliates, net	6,045
Total current assets	54,660	38,226
Property, plant and equipment	1,764,940	1,468,910
Accumulated depreciation	(630,783)	(491,615)
Property, plant and equipment, net	1,134,157	977,295
Goodwill	124,019	124,019
Intangible and other assets, net	34,504	23,996
Total assets	1,347,340	1,163,536
Current liabilities:
Accrued liabilities	8,426	9,621
Accrued interest	11,394	1,473
Due to affiliates, net		21,598
Current portion of interest rate swaps	3,374	3,873
Total current liabilities	23,194	36,565
Long-term debt	719,818	680,500
Interest rate swaps	1,230	6,043
Deferred income taxes	1,072	885
Other long-term liabilities	602	543
Total liabilities	745,916	724,536
Commitments and contingencies (Note 12)
Partners' capital:
Common units, 49,456,901 and 42,313,731 units issued, respectively	589,708	436,587
General partner units, 2% interest with 1,003,227 and 858,583 equivalent units issued and outstanding, respectively	16,761	13,490
Accumulated other comprehensive loss	(3,971)	(10,094)
Treasury units, 47,420 and 43,630 common units, respectively	(1,074)	(983)
Total partners' capital	601,424	439,000
Total liabilities and partners' capital	$ 1,347,340	$ 1,163,536