Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 64,718	$ 80,029
Restricted cash	34,182	34,678
Accounts receivable, net	368,246	346,169
Receivable from affiliates	13,039	6,178
Inventories	46,609	34,433
Other current assets	15,167	18,516
Total current assets	541,961	520,003
Property, plant and equipment, net	1,057,116	814,724
Equity method investments	518,149	387,802
Goodwill	60,676	9,884
Other intangible assets, net	179,897	7,585
Other noncurrent assets, net	32,603	8,181
Total assets	2,390,402	1,748,179
Current liabilities:
Accounts payable	303,672	253,623
Payable to affiliates	2,102	0
Accrued liabilities	81,509	63,831
Payables to pre-petition creditors	32,372	32,933
Deferred revenue	18,835	18,973
Other current liabilities	9,120	4,960
Current portion of long-term debt	26	24
Total current liabilities	447,636	374,344
Long-term debt	540,043	206,062
Deferred income taxes	53,588	65,620
Other noncurrent liabilities	95,418	80,625
Commitments and contingencies (Note 9)
SemGroup owners' equity:
Common stock (Note 10)	425	420
Additional paid-in capital	1,108,041	1,039,189
Treasury stock, at cost (Note 10)	(613)	(242)
Accumulated deficit	(100,890)	(145,674)
Accumulated other comprehensive loss	(5,606)	(1,299)
Total SemGroup owners' equity	1,001,357	892,394
Noncontrolling interests in consolidated subsidiaries	252,360	129,134
Total owners' equity	1,253,717	1,021,528
Total liabilities and owners' equity	$ 2,390,402	$ 1,748,179