Income Taxes - Deferred Taxes (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Current deferred tax assets	$ 3,502	$ 2,649
Non-current deferred tax assets	0	17,229
Non-current deferred tax liabilities	(526)	(23,823)
Net deferred tax assets	$ 2,976
Net deferred tax liabilities		$ (3,945)