Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 93,699	$ 74,216
Accounts receivable (net of allowance of $2,628 and $2,322, respectively)	653,484	418,339
Receivable from affiliates	1,691	25,455
Inventories	101,665	99,234
Current assets held for sale	38,063	0
Other current assets	14,297	18,630
Total current assets	902,899	635,874
Property, plant and equipment (net of accumulated depreciation of $444,842 and $393,635, respectively)	3,315,131	1,762,072
Equity method investments	285,281	434,289
Goodwill	257,302	34,230
Other intangible assets (net of accumulated amortization of $56,409 and $39,018, respectively)	398,643	150,978
Other noncurrent assets, net	132,600	57,529
Noncurrent assets held for sale	84,961	0
Total assets	5,376,817	3,074,972
Current liabilities:
Accounts payable	587,898	367,307
Payable to affiliates	6,971	26,508
Accrued liabilities	131,407	81,104
Deferred revenue	7,518	10,571
Current liabilities held for sale	23,847	0
Other current liabilities	3,395	2,839
Current portion of long-term debt	5,525	26
Total current liabilities	766,561	488,355
Long-term debt	2,853,095	1,050,918
Deferred income taxes	46,585	64,501
Other noncurrent liabilities	38,495	25,233
Noncurrent liabilities held for sale	13,716	0
Commitments and contingencies (Note 15)
Preferred stock, $0.01 par value (authorized - 4,000 shares; issued - none)	0	0
SemGroup Corporation owners’ equity:
Common stock, $0.01 par value (authorized - 100,000 shares; issued - 79,708 and 67,079 shares, respectively)	786	659
Additional paid-in capital	1,770,117	1,561,695
Treasury stock, at cost (1,024 and 980 shares, respectively)	8,031	6,558
Accumulated deficit	(50,706)	(35,917)
Accumulated other comprehensive loss	(53,801)	(73,914)
Total SemGroup Corporation owners’ equity	1,658,365	1,445,965
Total liabilities and owners’ equity	$ 5,376,817	$ 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.