Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 366,349
Other comprehensive income (loss)	$ (640)	$ 61	(4,119)	$ (1,885)
Ending balance	395,822		395,822
Foreign Currency Translation (Losses) Gains
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(3,085)
Other comprehensive income (loss)			2,317
Ending balance	(768)		(768)
Unrealized Gain (Loss) on Derivatives, Net of Taxes
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			2,904
Other comprehensive income (loss)			(6,436)
Ending balance	(3,532)		(3,532)
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(181)
Ending balance	$ (4,300)		$ (4,300)