Acquisitions - Additional Information (Detail) shares in Thousands		2 Months Ended	3 Months Ended		6 Months Ended
	Apr. 20, 2017 USD ($) Rigs hp shares	Jun. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Business Acquisition [Line Items]
Pretax loss			$ 148,538,000	$ 134,893,000	$ 249,024,000	$ 240,826,000
Merger related costs			51,193,000		$ 56,349,000
Seventy Seven Energy Inc.
Business Acquisition [Line Items]
Shares of common stock exchange in business acquisition | shares	46,298
Repayment of outstanding debt	$ 472,000,000
Merger date					Apr. 20, 2017
Total fair value of the consideration transferred	$ 1,511,396,000
Number of drilling rigs acquired | Rigs	91
Number of horsepower of modern, efficient fracturing equipment | hp	500,000
Goodwill deductible for tax purposes	$ 0
Revenues		$ 190,000,000
Pretax loss		$ 16,900,000
Merger related costs			$ 28,900,000		$ 36,700,000
Seventy Seven Energy Inc. | APEX Class Rigs
Business Acquisition [Line Items]
Number of rigs | Rigs	36