Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$ 11,676	$ 8,866
Accounts receivable-trade, net	307,978	368,033
Inventories	97,029	85,330
Other	37,653	72,994
Total current assets	454,336	535,223
FIXED ASSETS, at cost	1,415,443	1,327,974
Less: Accumulated depreciation	(211,689)	(199,230)
Net fixed assets	1,203,754	1,128,744
NET INVESTMENT IN DIRECT FINANCING LEASES, net of unearned income	150,250	151,903
EQUITY INVESTEES	626,195	620,247
INTANGIBLE ASSETS, net of amortization	59,914	62,928
GOODWILL	325,046	325,046
OTHER ASSETS, net of amortization	38,058	38,111
TOTAL ASSETS	2,857,553	2,862,202
CURRENT LIABILITIES:
Accounts payable-trade	302,695	316,204
Accrued liabilities	98,738	130,349
Total current liabilities	401,433	446,553
SENIOR SECURED CREDIT FACILITY	640,500	582,800
SENIOR UNSECURED NOTES	700,740	700,772
DEFERRED TAX LIABILITIES	16,285	15,944
OTHER LONG-TERM LIABILITIES	18,536	18,396
COMMITMENTS AND CONTINGENCIES (Note 14)
PARTNERS' CAPITAL:
Common unitholders, 88,690,985 units issued and outstanding at March 31, 2014 and December 31, 2013, respectively	1,080,059	1,097,737
TOTAL LIABILITIES AND PARTNERS' CAPITAL	$ 2,857,553	$ 2,862,202