Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues:
Total revenues	$ 805,599	$ 1,491,284	$ 1,262,904
Expenses:
General and administrative, including stock-based compensation of $13,728, $14,714 and $11,830 in 2015, 2014 and 2013, respectively	143,458	167,301	171,439
Depreciation and amortization	241,471	217,480	209,747
Loss on disposal of assets	1,602	1,974	2,873
Goodwill impairment	81,877	34,703
Total expenses	1,111,264	1,432,877	1,252,147
Operating (loss) income	(305,665)	58,407	10,757
Other income (expense):
Interest expense	(67,964)	(67,042)	(67,207)
Interest income	26	40	53
Other income	528	775	743
Loss before income taxes	(373,075)	(7,820)	(55,654)
Income tax (expense) benefit	131,330	(521)	19,725
Net loss	(241,745)	(8,341)	(35,929)
Net loss available to common stockholders	$ (241,745)	$ (8,341)	$ (35,929)
Loss per share of common stock:
Basic	$ (5.97)	$ (0.20)	$ (0.89)
Diluted	$ (5.97)	$ (0.20)	$ (0.89)
Completion and Remedial Services
Revenues:
Total revenues	$ 307,550	$ 698,917	$ 501,137
Expenses:
Service expenses	245,069	434,457	327,540
Depreciation and amortization	83,882	74,924	62,609
Goodwill impairment	81,877
Fluid Services
Revenues:
Total revenues	258,597	369,774	343,863
Expenses:
Service expenses	196,155	265,105	239,154
Depreciation and amortization	71,280	64,445	63,316
Well Servicing
Revenues:
Total revenues	217,245	361,683	363,386
Expenses:
Service expenses	184,952	270,344	265,058
Depreciation and amortization	60,466	55,131	60,474
Contract Drilling
Revenues:
Total revenues	22,207	60,910	54,518
Expenses:
Service expenses	$ 16,680	$ 41,513	$ 36,336