Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Purchase commitments, net of advances	$ 7,495
Export-oriented units established, percentage	100.00%
Litigation, settlement amount		$ 2,400
Settlement payments made during the period		1,200
Aggregate disputed amount amount related to transfer pricing and permanent establishment	$ 17,924	18,177
Total bank guarantees and deposits in respect of contingencies	8,262	8,171
Amounts paid as deposits in respect of contingencies	6,343	6,272
Bank guarantee issued	$ 1,919	$ 1,899