Other Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Condensed Income Statements, Captions [Line Items]
Foreign currency gain (loss)	$ 192	$ (244)	$ 739	$ (2,005)
Change in fair value of contingent consideration			(2,600)	(1,440)
Interest income	40	17	113	59
Other expense, net	102	(767)	(122)	(3,386)
Other Expense
Condensed Income Statements, Captions [Line Items]
Change in fair value of contingent consideration	$ (130)	$ (540)	$ (974)	$ (1,440)