Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 15,042	$ 10,817
Accounts receivable-trade, net	231,526	237,989
Inventories	72,978	101,124
Other	22,177	26,174
Total current assets	341,723	376,104
FIXED ASSETS, at cost	652,178	541,138
Less: Accumulated depreciation	(139,926)	(124,213)
Net fixed assets	512,252	416,925
NET INVESTMENT IN DIRECT FINANCING LEASES, net of unearned income	159,982	162,460
EQUITY INVESTEES	547,896	326,947
INTANGIBLE ASSETS, net of amortization	83,525	93,356
GOODWILL	325,046	325,046
OTHER ASSETS, net of amortization	29,926	30,006
TOTAL ASSETS	2,000,350	1,730,844
CURRENT LIABILITIES:
Accounts payable-trade	189,105	199,357
Accrued liabilities	46,676	50,071
Total current liabilities	235,781	249,428
SENIOR SECURED CREDIT FACILITY	445,000	409,300
SENIOR UNSECURED NOTES	350,953	250,000
DEFERRED TAX LIABILITIES	12,110	12,549
OTHER LONG-TERM LIABILITIES	23,204	16,929
COMMITMENTS AND CONTINGENCIES (Note 14)
PARTNERS' CAPITAL:
Common unitholders, 79,464,519 and 71,965,062 units issued and outstanding at June 30, 2012 and December 31, 2011, respectively	933,302	792,638
TOTAL LIABILITIES AND PARTNERS' CAPITAL	$ 2,000,350	$ 1,730,844