Income Taxes Benefit From 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]
Current Federal Tax Expense (Benefit)	$ 1,757	$ 1,766	$ 2
Current State and Local Tax Expense (Benefit)	883	681	821
Current Income Tax Expense (Benefit)	2,640	2,447	823
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	28,760	22,141	(102,830)
Deferred State and Local Income Tax Expense (Benefit)	3,766	(5,641)	(8,081)
Deferred Income Tax Expense (Benefit)	32,526	16,500	(110,911)
Provision (benefit) from income taxes	$ 35,166	$ 18,947	$ (110,088)