Income Taxes - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Statutory rate		35.00%	35.00%	35.00%
Valuation allowance		$ 3,771	$ 1,936
Undistributed earnings of foreign subsidiaries		74,900	$ 304,000
Unrecognized tax benefits		300
Unrecognized tax benefits, decrease resulting from settlements with taxing authorities				$ 3,400
Income tax examination, reversal of penalties and interest accrued				$ 1,300
Income tax refunds	$ 35,200	28,400
U.S. [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward		43,200
Foreign [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carryforward		7,200
Foreign [Member] | Well Intervention [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward		3,200
Foreign [Member] | Expiration 2025 [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carryforward		2,800
Foreign [Member] | Expiration 2026 [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carryforward		$ 4,400