Income Taxes - Current and Long-Term Deferred Tax Assests and Liabilities (Details 4) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Current deferred tax assets	$ 6,025	$ 8,708
Current deferred tax liabilities	(6,731)	(8)
Total current deferred tax assets	(706)
Total current deferred tax assets		8,700
Non-current deferred tax assets	58,544	43,120
Non-current deferred tax liabilities	(450)	(195)
Total non-current deferred tax assets	58,094	42,925
Total net deferred tax assets	$ 57,388	$ 51,625