Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 15,461	$ 10,817
Accounts receivable-trade, net	318,892	237,989
Inventories	67,298	101,124
Other	25,616	26,174
Total current assets	427,267	376,104
FIXED ASSETS, at cost	684,663	541,138
Less: Accumulated depreciation	(148,712)	(124,213)
Net fixed assets	535,951	416,925
NET INVESTMENT IN DIRECT FINANCING LEASES, net of unearned income	158,698	162,460
EQUITY INVESTEES	547,925	326,947
INTANGIBLE ASSETS, net of amortization	79,140	93,356
GOODWILL	325,046	325,046
OTHER ASSETS, net of amortization	33,128	30,006
TOTAL ASSETS	2,107,155	1,730,844
CURRENT LIABILITIES:
Accounts payable-trade	254,688	199,357
Accrued liabilities	63,691	50,071
Total current liabilities	318,379	249,428
SENIOR SECURED CREDIT FACILITY	483,000	409,300
SENIOR UNSECURED NOTES	350,924	250,000
DEFERRED TAX LIABILITIES	11,598	12,549
OTHER LONG-TERM LIABILITIES	15,321	16,929
COMMITMENTS AND CONTINGENCIES (Note 14)
PARTNERS' CAPITAL:
Common unitholders, 81,202,752 and 71,965,062 units issued and outstanding at September 30, 2012 and December 31, 2011, respectively	927,933	792,638
TOTAL LIABILITIES AND PARTNERS' CAPITAL	$ 2,107,155	$ 1,730,844