Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Accrued expense	$ 1,089	$ 927
Unrealized foreign exchange loss	1,426	652
Net operating loss carryforward	3,066	1,999
Deferred financing costs	1,355	1,564
Stock compensation	1,166	322
Other	555	486
Total gross deferred tax asset	8,657	5,950
Valuation allowance	(4,930)	(3,717)
Net deferred tax assets	3,727	2,233
Deferred tax liabilities:
Plant, property and leasehold improvements	(6,393)	(5,881)
Intangibles	(17,159)	(18,962)
Prepaid expense	(1,436)	(1,463)
Total gross deferred tax liabilities	(24,988)	(26,306)
Net deferred tax liabilities	$ (21,261)	$ (24,073)