Income Taxes - Components of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of Income (loss) before income taxes
Domestic	$ (74,979)	$ (32,982)	$ (1,118)
Foreign	(3,674)	4,582	20,101
(Loss) Income before income taxes	(78,653)	(28,400)	18,983
Currently payable:
Federal	(296)	(631)	1,323
State and Local	37	36	32
Foreign	4,747	1,281	6,581
Total currently payable	4,488	686	7,936
Deferred:
Federal	(16,572)	(2,404)	(14,801)
State and Local	0	(66)	256
Foreign	(5,059)	3,624	2,030
Total deferred	(21,631)	1,154	(12,515)
(Benefit) provision for income taxes	(17,143)	1,840	(4,579)
Reconciliation of income tax expense to the U.S. Federal statutory income tax rate to actual tax provision
Tax at Statutory Rate	(16,517)	(5,962)	6,654
State income taxes, net of federal tax benefit	40	(54)	166
Effect of Foreign Items	1,004	834	2,101
Goodwill impairment	0	0	0
Valuation Allowance and unbenefited losses	(3,868)	6,018	18,452
U.S. valuation allowance release	0	0	(15,388)
Deferred Tax Rate Changes	281	240	(17,312)
Transaction Costs	671	531	470
Tax Incentives	(56)	(91)	(68)
Disallowed foreign exchange loss	573	0	0
Warrants	0	0	168
Other	729	324	178
(Benefit) provision for income taxes	$ (17,143)	$ 1,840	$ (4,579)