Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Capital assets and other	$ 905	$ 5,059
Net operating loss carry forwards	70,646	49,318
Interest deductions	8,911	2,026
Refinancing charge	2,926	5,578
Goodwill and intangibles	123,504	129,455
Stock compensation	2,101	1,208
Pension plan	3,872	4,165
Deferred Tax Assets, Unrealized Currency Losses	14,645	8,653
Capital loss carry forwards	11,827	11,450
Accounting reserves	8,280	412
Gross deferred tax asset	247,617	217,324
Less: valuation allowance	(68,479)	(19,032)
Net deferred tax assets	179,138	198,292
Deferred tax liabilities:
Goodwill amortization	(91,726)	(89,727)
Total deferred tax liabilities	(91,726)	(89,727)
Deferred Tax Assets, Net	87,412	108,565
Disclosed as:
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	92,741	115,325
Net Deferred Tax Asset, Gross of Jurisdictional Netting		115,325
Deferred Tax Liabilities, Net, Noncurrent	$ 5,329	6,760
Deferred Tax Liability, Gross of Jurisdictional Netting		$ 6,760