CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Operating revenues:
Other		$ 5,273	$ 3,967
Total operating revenues		305,175	268,939
Operating costs and expenses:
Contract drilling		108,221	80,898
Pressure pumping		119,013	87,813
Other		3,259	2,090
Depreciation, depletion, amortization and impairment		156,217	176,770
Selling, general and administrative		18,852	17,972
Acquisition related expenses		5,156
Other operating income, net	[1]	(12,904)	(1,345)
Total operating costs and expenses		397,814	364,198
Operating loss		(92,639)	(95,259)
Other income (expense):
Interest income		406	110
Interest expense, net of amount capitalized		(8,270)	(10,800)
Other		17	16
Total other expense		(7,847)	(10,674)
Loss before income taxes		(100,486)	(105,933)
Income tax benefit		(36,947)	(35,430)
Net loss		$ (63,539)	$ (70,503)
Net loss per common share:
Basic		$ (0.40)	$ (0.48)
Diluted		$ (0.40)	$ (0.48)
Weighted average number of common shares outstanding:
Basic		160,062	145,770
Diluted		160,062	145,770
Cash dividends per common share		$ 0.02	$ 0.10
Contract Drilling
Operating revenues:
Oil and gas services		$ 158,728	$ 168,659
Pressure Pumping
Operating revenues:
Oil and gas services		$ 141,174	$ 96,313

[1] Other operating income includes net gains associated with the disposal of assets related to corporate strategy decisions of the executive management group. Accordingly, the related gains have been excluded from the operating results of specific segments. This caption also includes expenses related to certain legal settlements net of insurance reimbursements.