Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 38,520	$ 98,875
Restricted cash	47,703	2,429
Trade accounts receivable, net of allowance of $1,523 and $0	148,444	108,655
Accounts receivable - related parties	22	31
Income tax receivable	1,878	1,271
Inventories	36,403	35,691
Prepaid expenses	22,353	15,575
Other current assets	4,292	2,003
Total current assets	299,615	264,530
Property and equipment, net	502,579	488,848
Deferred debt costs, net of amortization	2,497	0
Other intangible assets, net of amortization	3,221	3,458
Other assets	12,568	11,324
Total assets	820,480	768,160
Current liabilities:
Accounts payable	80,518	47,959
Accrued expenses	51,973	51,329
Current portion of long-term debt, net of $1,657 discount at December 31, 2017	55,997	38,468
Other current liabilities	2,469	2,065
Total current liabilities	190,957	139,821
Long-term debt, net of discounts and deferred debt costs of $10,244 and $17,344 at December 31, 2017 and 2016 respectively	259,242	184,752
Deferred tax liabilities	78	0
Other long-term liabilities	31,550	29,179
Total liabilities	481,827	353,752
Stockholders' equity:
Preferred stock, $0.01 par value: authorized 5,000,000 shares; zero outstanding at December 31, 2017 and 2016	0	0
Common stock; $0.01 par value; 80,000,000 shares authorized; and 26,371,572 and 26,095,431 shares issued and 26,219,129 and 25,998,844 shares outstanding at December 31, 2017 and 2016	264	261
Additional paid-in capital	439,517	417,624
Retained deficit	(96,674)	0
Treasury stock, at cost 152,443 and 96,587 shares at December 31, 2017 and 2016	(4,454)	(3,477)
Total stockholders' equity	338,653	414,408
Total liabilities and stockholder's equity	$ 820,480	$ 768,160