Summary of Significant Accounting Policies - Goodwill (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments
Goodwill - Beginning Balance	$ 166,659,000	$ 173,928,000
Acquisitions and purchase price adjustment		86,502,000
Disposals and Impairments		(92,112,000)
Cumulative Translation Adjustment	258,000	(1,659,000)
Goodwill - Ending Balance	$ 166,917,000	166,659,000	$ 173,928,000
Goodwill
Long-term growth rate used to calculate terminal values for each reporting unit (as a percent)	3.00%
Goodwill impairments	$ 0		356,605,000
Discontinued Operation, additional disclosures
Goodwill for the consolidated company, expected to be deductible for tax purposes	11,200,000
Drilling and Rig Services
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments
Goodwill - Beginning Balance	166,659,000	81,816,000
Acquisitions and purchase price adjustment		86,502,000
Cumulative Translation Adjustment		(1,659,000)
Goodwill - Ending Balance		166,659,000	81,816,000
United States
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments
Goodwill - Beginning Balance	50,149,000	50,149,000
Goodwill - Ending Balance	50,149,000	50,149,000	50,149,000
International
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments
Goodwill - Beginning Balance	75,634,000
Acquisitions and purchase price adjustment		75,634,000
Goodwill - Ending Balance	75,634,000	75,634,000
Rig Services
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments
Goodwill - Beginning Balance	40,876,000	31,667,000
Acquisitions and purchase price adjustment		10,868,000
Cumulative Translation Adjustment	258,000	(1,659,000)
Goodwill - Ending Balance	$ 41,134,000	40,876,000	31,667,000
Goodwill
Goodwill impairments			21,600,000
Completion and Production Services
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments
Goodwill - Beginning Balance		92,112,000
Disposals and Impairments		(92,112,000)
Goodwill - Ending Balance			92,112,000
Production Services
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments
Goodwill - Beginning Balance		92,112,000
Disposals and Impairments		$ (92,112,000)
Goodwill - Ending Balance			$ 92,112,000