CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 3,925	$ 30,202
Trade accounts receivable, net	171,256	114,902
Inventories	36,726	31,722
Deferred income taxes	0	1,887
Prepaid expenses	4,243	3,965
Other receivables	7,765	6,519
Assets held for sale	0	3,779
Other current assets	2,374	301
Total current assets	226,289	193,277
Property, plant and equipment, net	248,123	176,524
Goodwill	100,204	50,757
Intangible assets, net	95,754	31,720
Deferred income taxes	6,026	0
Other assets	11,450	8,250
Total assets	687,846	460,528
Current liabilities:
Accounts payable	80,419	48,705
Accrued liabilities	85,854	50,391
Current maturities of long-term debt	9,386	5,104
Derivative liabilities	67,401	25,246
Liabilities held for sale	0	902
Total current liabilities	243,060	130,348
Long-term debt, net of current maturities	272,363	215,333
Other long-term obligations and deferred credits	38,416	6,940
Deferred income taxes	0	6,427
Total liabilities	$ 553,839	$ 359,048
Commitments and contingencies (Note 22)
Equity:
Preferred stock, $0.001 par value per share (10,000 shares authorized; none issued)	$ 0	$ 0
Common stock, $0.001 par value per share (100,000 shares authorized; 15,713 and 14,675 shares issued, respectively; and 14,871 and 13,978 shares outstanding, respectively)	16	15
Additional paid-in capital	201,015	156,745
Accumulated deficit	(48,157)	(42,743)
Treasury stock, at cost (842 and 697 common shares, respectively)	(18,867)	(12,537)
Total equity	134,007	101,480
Total liabilities and equity	$ 687,846	$ 460,528