Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 75,083	$ 46,732
Restricted cash	83,606
Trade accounts receivable, net of allowance of $2,420 and $2,670, respectively	78,742	102,127
Accounts receivable - related parties	29	35
Income tax receivable	1,277	1,828
Inventories	33,845	36,944
Prepaid expenses	12,118	13,851
Other current assets	9,601	9,968
Total current assets	294,301	211,485
Property and equipment, net	797,973	846,290
Deferred debt costs, net of amortization	23,423	9,704
Deferred debt costs, net of amortization	1,478	3,420
Other intangible assets, net of amortization	64,518	66,745
Other assets	10,255	10,241
Total assets	1,168,525	1,138,181
Current liabilities:
Accounts payable	35,873	54,521
Accrued expenses	59,166	59,380
Current portion of long-term debt	47,344	48,651
Other current liabilities	1,554	7,003
Total current liabilities	143,937	169,555
Long-term debt, net of unamortized premium on notes of $888 and $956, and deferred debt costs of $23,423 and $9,704 respectively	969,790	828,664
Net deferred tax liabilities		5,066
Other long-term liabilities	$ 29,596	$ 28,558
Commitments and contingencies
Stockholders' equity:
Preferred stock; $0.01 par value; 5,000,000 shares authorized; none designated or issued at March 31, 2016 and December 31, 2015
Common stock; $0.01 par value; 80,000,000 shares authorized; 43,500,032 shares issued and 42,761,426 shares outstanding at March 31, 2016; 43,500,032 shares issued and 42,196,680 shares outstanding at December 31, 2015	$ 435	$ 435
Additional paid-in capital	372,435	374,729
Retained deficit	(340,151)	(256,812)
Treasury stock, at cost, 738,606 and 1,303,352 shares at March 31, 2016 and December 31, 2015, respectively	(7,517)	(12,014)
Total stockholders' equity	25,202	106,338
Total liabilities and stockholders' equity	$ 1,168,525	$ 1,138,181