Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 298,766	$ 80,029
Restricted cash	34,332	34,678
Accounts receivable, net	347,677	346,169
Receivable from affiliates	8,594	6,178
Inventories	34,369	34,433
Other current assets	16,285	18,516
Total current assets	740,023	520,003
Property, plant and equipment, net	833,591	814,724
Equity method investments	466,239	387,802
Goodwill	9,916	9,884
Other intangible assets, net	6,811	7,585
Other noncurrent assets, net	40,071	8,181
Total assets	2,096,651	1,748,179
Current liabilities:
Accounts payable	252,972	253,623
Accrued liabilities	67,579	63,831
Payables to pre-petition creditors	32,367	32,933
Deferred revenue	17,736	18,973
Other current liabilities	7,745	4,960
Current portion of long-term debt	4,349	24
Total current liabilities	382,748	374,344
Long-term debt	466,549	206,062
Deferred income taxes	55,947	65,620
Other noncurrent liabilities	89,302	80,625
Commitments and contingencies (Note 9)
SemGroup owners' equity:
Common stock (Note 10)	425	420
Additional paid-in capital	1,114,388	1,039,189
Treasury stock, at cost (Note 10)	(613)	(242)
Accumulated deficit	(98,661)	(145,674)
Accumulated other comprehensive loss	(11,711)	(1,299)
Total SemGroup owners' equity	1,003,828	892,394
Noncontrolling interests in consolidated subsidiaries	98,277	129,134
Total owners' equity	1,102,105	1,021,528
Total liabilities and owners' equity	$ 2,096,651	$ 1,748,179