Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Federal	$ 74,769	$ 101,530	$ 11,950
Current State and Local Tax Expense	38,933	52,551	28,167
Current Income Tax Expense	113,702	154,081	40,117
Deferred Federal Income Tax Expense	63,463	55,857	128,436
Deferred State and Local Income Tax Expense	19,748	(4,168)	11,964
Deferred Income Tax Expense (Benefit)	83,211	51,689	140,400
Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations	$ 196,913	$ 205,770	$ 180,517