Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Capital assets and other	$ 6,758	$ 7,334
Net operating loss carry forwards	44,305	39,454
Interest deductions	12,146	12,266
Refinancing charge	7,413	144
Goodwill and intangibles	179,029	178,835
Stock compensation	2,581	3,033
Pension plan	5,095	3,770
Deferred Tax Assets, Unrealized Currency Losses	15,237	15,548
Capital loss carry forwards	10,957	10,630
Accounting reserves	7,138	6,701
Gross deferred tax asset	290,659	277,715
Less: valuation allowance	(248,866)	(247,967)
Net deferred tax assets	41,793	29,748
Deferred tax liabilities:
Deferred finance charges	(333)	(323)
Capital assets and other	(388)	(797)
Goodwill amortization	(109,638)	(100,743)
Total deferred tax liabilities	(110,359)	(101,863)
Disclosed as:
Deferred tax liabilities (assets), net	(68,566)	(72,115)
Deferred tax assets	41,793	29,748
Deferred Tax Liabilities, Net, Noncurrent	$ 110,359	$ 101,863