Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current
U.S. federal	$ 0	$ (624)	$ 27,521
State	(254)	226	1,353
Foreign	(241)	(308)	0
Total Current	(495)	(706)	28,874
Deferred
U.S. federal	5,403	3,702	(7,260)
State	(280)	107	(357)
Foreign	(6,079)	2,360	1,633
Total Deferred	(956)	6,169	(5,984)
Changes in valuation allowance	(3,613)	(4,604)	(13,289)
Income tax (expense) benefit	$ (5,064)	$ 859	$ 9,601

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

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Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses.

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