Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues:
Total revenues	$ 1,491,284	$ 1,262,904	$ 1,374,884
Expenses:
General and administrative, including stock-based compensation of $14,714, $11,830 and $12,855 in 2014, 2013 and 2012 respectively	167,301	171,439	183,274
Depreciation and amortization	217,480	209,747	187,083
Loss on disposal of assets	1,974	2,873	3,334
Goodwill impairment	34,703
Total expenses	1,432,877	1,252,147	1,276,275
Operating income	58,407	10,757	98,609
Other income (expense):
Interest expense	(67,042)	(67,207)	(62,438)
Interest income	40	53	83
Gain on bargain purchase			910
Loss on early extinguishment of debt			(7,942)
Other income	775	743	627
Income (loss) before income taxes	(7,820)	(55,654)	29,849
Income tax (expense) benefit	(521)	19,725	(10,263)
Net income (loss)	(8,341)	(35,929)	19,586
Earnings (loss) per share of common stock:
Basic	$ (0.20)	$ (0.89)	$ 0.48
Diluted	$ (0.20)	$ (0.89)	$ 0.47
Completion and Remedial Services
Revenues:
Total revenues	698,917	501,137	586,070
Expenses:
Service Expenses	434,457	327,540	357,960
Depreciation and amortization	74,924	62,609	56,043
Fluid Services
Revenues:
Total revenues	369,774	343,863	352,246
Expenses:
Service Expenses	265,105	239,154	236,588
Depreciation and amortization	64,445	63,316	52,331
Goodwill impairment	28,081
Well Servicing
Revenues:
Total revenues	361,683	363,386	376,268
Expenses:
Service Expenses	270,344	265,058	268,219
Depreciation and amortization	55,131	60,474	56,310
Goodwill impairment	6,622
Contract Drilling
Revenues:
Total revenues	60,910	54,518	60,300
Expenses:
Service Expenses	$ 41,513	$ 36,336	$ 39,817