Income Taxes - Deferred Tax Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Equity increase, deferred tax realization	$ 1,400
Net Deferred Income Tax Liability [Abstract]
Deferred income tax assets	8,904	$ 12,368
Long-term deferred income tax assets	0	9,546
Non-current deferred income tax liabilities	(18,380)	0
Other long-term liabilities	0	(60)
Net deferred income tax liabilities	$ (9,476)	$ 21,854