Income Taxes - Deferred Taxes (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Current deferred tax assets	$ 2,352	$ 2,649
Non-current deferred tax assets	0	17,229
Non-current deferred tax liabilities	(1,205)	(23,823)
Net deferred tax assets	$ 1,147
Net deferred tax liabilities		$ (3,945)