Other Income (Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Component of Other Income (Expense) Nonoperating [Line Items]
Interest income	$ 258	$ 536	$ 857
Other income (expense), net	(15)	(1,385)	841
Foreign exchange losses, net
Component of Other Income (Expense) Nonoperating [Line Items]
Other income (expense), net	(545)	(1,985)	(16)
Other
Component of Other Income (Expense) Nonoperating [Line Items]
Other income (expense), net	$ 272	$ 64	$ 0