Consolidated Statements Of Operations And Comprehensive Income (Loss) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Revenues:
Completion and remedial services	$ 537,134		$ 261,436		$ 134,818
Fluid services	332,010		241,164		214,822
Well servicing	333,057		204,872		160,614
Contract drilling	41,054		20,767		16,373
Total revenues	1,243,255		728,239		526,627
Expenses:
Completion and remedial services	297,276		156,573		95,287
Fluid services	211,959		178,152		159,079
Well servicing	228,723		156,885		121,618
Contract drilling	28,154		15,250		13,604
General and administrative, including stock-based compensation of $7,955, $5,666 and $5,152 in 2011, 2010 and 2009 respectively	142,264		107,781		104,253
Depreciation and amortization	154,341		135,001		132,520
Loss on disposal of assets	447		2,856		2,650
Goodwill impairment					204,014
Total expenses	1,063,164		752,498		833,025
Operating income (loss)	180,091		(24,259)		(306,398)
Other income (expense):
Interest expense	(53,886)		(46,471)		(32,949)
Interest income	1,587		103		563
Gain on bargain purchase			1,772
Loss on early extinguishment of debt	(49,366)				(3,481)
Other income	525		499		1,198
Income (loss) from continuing operations before income taxes	78,951		(68,356)		(341,067)
Income tax benefit (expense)	(31,788)		24,793		87,529
Net income (loss) available to common stockholders	$ 47,163		$ (43,563)		$ (253,538)
Basic earnings per share of common stock:
Net income (loss) available to common stockholders	$ 1.17	[1]	$ (1.10)	[1]	$ (6.39)
Diluted earnings per share of common stock:
Net income (loss) available to common stockholders	$ 1.14	[1]	$ (1.10)	[1]	$ (6.39)

[1] The sum of individual quarterly net income per share may not agree to the total for the year due to each period's computation being based on the weighted average number of common shares outstanding during each period.