Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 79,908	$ 63,955
Undistributed Earnings of Foreign Subsidiaries	0
Domestic Tax Authority [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	2,010
Operating Loss Carryforwards	$ 197,930
Internal Revenue Service (IRS) | Minimum
Tax Credit Carryforward [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2032
Internal Revenue Service (IRS) | Maximum
Tax Credit Carryforward [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2032
Foreign Tax Authority
Tax Credit Carryforward [Line Items]
Operating Loss Carryforwards	$ 39,934
State and Local Jurisdiction
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	546
Operating Loss Carryforwards	$ 232,759
State and Local Jurisdiction | Minimum
Tax Credit Carryforward [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2017
State and Local Jurisdiction | Maximum
Tax Credit Carryforward [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2017