Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	$ 46,138	$ 13,236	$ 22,727
State and local	3,822	2,008	2,462
Foreign	376	78	0
Current Income Tax Expense (Benefit)	50,336	15,322	25,189
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	(1,797)	19,672	5,788
State and local	9	81	(504)
Foreign	(1,656)	(4,914)	0
Deferred Income Tax Expense (Benefit)	(3,444)	14,839	5,284
Income Tax Expense (Benefit), Continuing Operations	$ 46,892	$ 30,161	$ 30,473

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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