Segment Information (Tables)

6 Months Ended

Jun. 30, 2015

Segment Information [Abstract]

Identifiable Assets

Identifiable Assets
			Onshore
	Drilling		Completion
	Products and		and Workover		Production		Technical				Consolidated
	Services		Services		Services		Solutions		Unallocated		Total
June 30, 2015	$	1,343,080	$	2,785,323	$	1,160,351	$	926,833	$	-	$	6,215,587
December 31, 2014	$	1,304,110	$	3,010,295	$	2,116,171	$	946,813	$	-	$	7,377,389

Company's information by geographic area

Revenues
	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
United States	$	541,337	$	932,941	$	1,301,780	$	1,825,260
Other Countries		169,447		174,611		326,239		343,710
Total	$	710,784	$	1,107,552	$	1,628,019	$	2,168,970
Long-Lived Assets
					June 30, 2015		December 31, 2014
United States					$	2,114,080	$	2,416,306
Other Countries						347,549		317,533
Total, net					$	2,461,629	$	2,733,839

Schedule Of Segment Reporting Information By Segment

Three Months Ended June 30, 2015
			Onshore
	Drilling		Completion
	Products and		and Workover		Production		Technical				Consolidated
	Services		Services		Services		Solutions		Unallocated		Total
Revenues	$	148,670	$	226,363	$	208,744	$	127,007	$	-	$	710,784
Cost of services and rentals
(exclusive of items shown separately below)		48,784		182,143		156,615		77,991		-		465,533
Depreciation, depletion, amortization     and accretion		49,729		55,479		36,671		16,473		-		158,352
General and administrative expenses		31,129		33,031		36,435		29,066		-		129,661
Reduction in value of assets		15,797		40,263		751,577		-		-		807,637
Income (loss) from operations		3,231		(84,553)		(772,554)		3,477		-		(850,399)
Interest expense, net		-		-		(369)		424		(25,437)		(25,382)
Other expense		-		-		-		-		(6,524)		(6,524)
Income (loss) from continuing operations     before income taxes	$	3,231	$	(84,553)	$	(772,923)	$	3,901	$	(31,961)	$	(882,305)

Three Months Ended June 30, 2014
			Onshore
	Drilling		Completion
	Products and		and Workover		Production		Technical				Consolidated
	Services		Services		Services		Solutions		Unallocated		Total
Revenues	$	225,982	$	398,048	$	343,876	$	139,646	$	-	$	1,107,552
Cost of services and rentals
(exclusive of items shown separately below)		72,737		274,907		231,119		71,530		-		650,293
Depreciation, depletion, amortization     and accretion		47,344		55,382		40,180		18,059		-		160,965
General and administrative expenses		38,953		36,011		45,243		26,646		-		146,853
Income from operations		66,948		31,748		27,334		23,411		-		149,441
Interest expense, net		-		-		-		398		(24,958)		(24,560)
Other expense		-		-		-		-		606		606
Income (loss) from continuing operations     before income taxes	$	66,948	$	31,748	$	27,334	$	23,809	$	(24,352)	$	125,487

Six Months Ended June 30, 2015
			Onshore
	Drilling		Completion
	Products and		and Workover		Production		Technical				Consolidated
	Services		Services		Services		Solutions		Unallocated		Total
Revenues	$	348,129	$	577,355	$	460,213	$	242,322	$	-	$	1,628,019
Cost of services and rentals
(exclusive of items shown separately below)		112,035		436,258		347,929		151,557		-		1,047,779
Depreciation, depletion, amortization     and accretion		98,813		115,290		75,831		30,638		-		320,572
General and administrative expenses		71,089		71,323		80,117		58,094		-		280,623
Reduction in value of assets		15,797		40,263		751,577		-		-		807,637
Income (loss) from operations		50,395		(85,779)		(795,241)		2,033		-		(828,592)
Interest expense, net		-		-		(134)		841		(49,298)		(48,591)
Other expense		-		-		-		-		(7,495)		(7,495)
Income (loss) from continuing operations     before income taxes	$	50,395	$	(85,779)	$	(795,375)	$	2,874	$	(56,793)	$	(884,678)

Six Months Ended June 30, 2014
			Onshore
	Drilling		Completion
	Products and		and Workover		Production		Technical				Consolidated
	Services		Services		Services		Solutions		Unallocated		Total
Revenues	$	446,192	$	787,925	$	665,111	$	269,742	$	-	$	2,168,970
Cost of services and rentals
(exclusive of items shown separately below)		139,889		559,142		458,344		144,523		-		1,301,898
Depreciation, depletion, amortization     and accretion		92,361		115,986		81,988		32,948		-		323,283
General and administrative expenses		80,113		74,979		92,431		55,249		-		302,772
Income from operations		133,829		37,818		32,348		37,022		-		241,017
Interest expense, net		-		-		-		763		(49,204)		(48,441)
Other income (expense)		-		-		-		-		571		571
Income (loss) from continuing operations     before income taxes	$	133,829	$	37,818	$	32,348	$	37,785	$	(48,633)	$	193,147