Derivatives - Total Net Fair Value of Derivatives (Details) - Foreign Currency Exchange Contracts - Measured on a Recurring Basis - Not designated as hedging instrument - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Total Balance
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts	$ (172)	$ (249)
Level 1
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts	0	0
Level 2
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts	(172)	(249)
Level 3
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts	$ 0	$ 0