Income Taxes - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Line Items]
Federal tax rate	21.00%	35.00%
Increase in valuation allowance	$ 3,200	$ 2,400
Limitation on operating loss carryforward	200
Undistributed earnings for foreign operations	2,000
Uncertain tax positions, reserve	522	499	$ 499
Uncertain tax positions, reversal	200
Income (loss) from foreign operations	(31,600)	$ 14,000	$ 13,100
Credit to income tax provision	$ (900)
Grant Of Income Tax Exemption Period	20 years
Benefit of tax exemptions on diluted earnings per share	$ 0.04
Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating Loss Carryfowards Acquired In Business Combination	$ 600
Operating loss carryforwards	16,300
Operating loss carryforward, not subject to expiration	15,700
State and Local Jurisdiction
Income Tax Disclosure [Line Items]
Operating loss carryforwards	1,300
Operating loss carryforward, subject to expiration	1,000
Argentina Tax Authority [Member] | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	300
France tax authority | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	7,900
Italy tax authority | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	400
Chile tax authority | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	1,000
State Administration of Taxation, China [Member] | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	500
Czech Republic Tax Authority [Member] | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	1,000
Germany Tax Authority [Member] [Domain] | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	900
National Tax Agency, Japan [Member] | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	400
Mexican Tax Authority [Member] | Domestic Tax Authority
Income Tax Disclosure [Line Items]
Operating loss carryforwards	$ 300