Income Taxes - Reconciliation Of Income Tax Rates (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Amount
Statutory rate	$ 3,653	$ (5,609)
Foreign tax rate differential	129	156
State income taxes, net of federal benefit	(59)	(706)
Non-deductible expenses	345	261
Global intangible low-taxed income	145	171
Income tax credit	(126)	(633)
Nondeductable executive compensation	234	351
Tax on unremitted foreign earning	216	149
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	(29,635)	10,226
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	(73)	91
Total income tax expense	$ (25,171)	$ 4,457
Effective Income Tax Rate Reconciliation, Percent
Statutory rate	21.00%	21.00%
Foreign tax rate differential	0.70%	(0.60%)
State income tax rate, net of federal benefit	(0.30%)	2.60%
Non-deductible expenses	2.00%	(1.00%)
Global intangible low-taxed income	0.80%	(0.60%)
Income tax credit	0.70%	(2.40%)
Nondeductable executive compensation	1.30%	(1.30%)
Tax on unremitted foreign earnings	1.20%	(0.60%)
Change in valuation allowance	(170.30%)	(38.30%)
Other	(0.40%)	(0.30%)
Total income tax expense/ Effective rate	(144.70%)	(16.70%)