Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Capital assets and other	$ 43,031	$ 45,496
Net operating loss carry forwards	37,490	39,525
Interest deductions	17,347	17,456
Refinancing charge	144	5,176
Deferred acquisition consideration	16,197	5,204
Stock compensation	3,033	1,561
Pension plan	3,770	3,597
Deferred Tax Assets, Unrealized Currency Losses	15,548	6,954
Capital loss carry forwards	10,630	14,834
Accounting reserves	6,700	5,135
Gross deferred tax asset	153,890	144,938
Less: valuation allowance	(124,143)	(119,117)
Net deferred tax assets	29,747	25,821
Disclosed Deferred Tax Liabilities	92,844	78,044
Deferred tax liabilities:
Deferred finance charges	(323)	(386)
Capital assets and other	(797)	(396)
Goodwill amortization	(91,724)	(77,603)
Total deferred tax liabilities	(92,844)	(78,385)
Disclosed as:
Deferred tax liabilities (assets), net	(63,097)	(52,564)
Disclosed Deferred Tax Assets	$ 29,747	$ 25,480