Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 56,535	$ 74,216
Accounts receivable (net of allowance of $2,783 and $2,322, respectively)	381,345	418,339
Receivable from affiliates	8,650	25,455
Inventories	80,446	99,234
Other current assets	16,150	18,630
Total current assets	543,126	635,874
Property, plant and equipment (net of accumulated depreciation of $443,872 and $393,635, respectively)	1,948,787	1,762,072
Equity method investments	430,514	434,289
Goodwill	34,802	34,230
Other intangible assets (net of accumulated amortization of $45,684 and $39,018, respectively)	145,639	150,978
Other noncurrent assets	63,350	57,529
Total assets	3,166,218	3,074,972
Current liabilities:
Accounts payable	326,810	367,307
Payable to affiliates	3,508	26,508
Accrued liabilities	113,783	81,104
Deferred revenue	9,425	10,571
Other current liabilities	1,920	2,839
Long-term debt, net	28	26
Total current liabilities	455,474	488,355
Long-term debt, net	1,215,244	1,050,918
Deferred income taxes	63,323	64,501
Other noncurrent liabilities	26,778	25,233
Commitments and contingencies (Note 8)
SemGroup owners’ equity:
Preferred stock, $0.01 par value (authorized - 4,000 shares; issued - none)	0	0
Common stock, $0.01 par value (authorized - 100,000 shares; issued - 67,285 and 67,079 shares, respectively)	661	659
Additional paid-in capital	1,505,941	1,561,695
Treasury stock, at cost (1,013 and 980 shares, respectively)	(7,824)	(6,558)
Accumulated deficit	(34,450)	(35,917)
Accumulated other comprehensive loss	(58,929)	(73,914)
Total SemGroup Corporation owners’ equity	1,405,399	1,445,965
Total liabilities and owners’ equity	$ 3,166,218	$ 3,074,972

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.