Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	35.00%	35.00%	35.00%
Operating loss carryforwards, federal	$ 0	$ 0
Operating loss carryforwards, state	325,700,000	323,900,000
Valuation allowance	(6,012,000)	(6,176,000)
Valuation allowance, decrease	200,000
Valuation allowance recorded in accumulated comprehensive income		0	$ 2,100,000
Unrecognized tax benefits	$ 1,700,000	$ 1,700,000