Income Taxes - Allocation of Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 808	$ 115,507	$ (409)
Income tax benefit	300	127	0
Total income tax expense (benefit)	$ 508	$ 115,380	$ (409)