UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 111,536	$ 109,393
Accounts receivable, net of allowance for doubtful accounts of $303 and $303, respectively	117,153	121,353
Inventory	19,267	12,192
Derivative assets	312	166
Income tax receivable	437	1,317
Prepayments and other current assets	1,111	1,264
Total current assets	249,816	245,685
Property and equipment, net	27,744	29,362
Investments in unconsolidated affiliates	425	425
Cash deposits and other assets	6,523	7,232
Total assets	284,508	282,704
Current liabilities:
Accounts payable	126,044	124,706
Accounts payable – related party	5	5
Derivative liabilities	289	145
Current portion of capital lease obligations	341	338
Other current liabilities	5,255	4,404
Total current liabilities	131,934	129,598
Other long-term liabilities:
Asset retirement obligations	1,334	1,273
Capital lease obligations	1,265	1,351
Deferred taxes and other liabilities	2,646	3,363
Total liabilities	137,179	135,585
Commitments and contingencies (Note 11)
Shareholders’ equity:
Preferred stock - $1.00 par value, 960,000 shares authorized, none outstanding	0	0
Common stock - $0.10 par value, 7,500,000 shares authorized, 4,217,596 shares outstanding	422	422
Contributed capital	11,693	11,693
Retained earnings	135,214	135,004
Total shareholders’ equity	147,329	147,119
Total liabilities and shareholders’ equity	$ 284,508	$ 282,704