General (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) country	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of Countries in which Entity Operates | country	65
Gross deferred tax assets			$ 106,900
Net cash used in operating activities	$ 14,086	$ 12,444
Accounting Standards Update 2016-09, Excess Tax Benefit Component
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Gross deferred tax assets	9,600
Valuation allowance	9,600
Accounting Standards Update 2016-09, Statutory Tax Withholding Component
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash used in operating activities	$ 500