Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards			$ 3,000
Net tax credits		$ 1,000	$ 2,100	$ 300
Income tax expense at federal statutory rate, Percent		35.00%	35.00%	35.00%
Refundable income taxes		$ 700	$ 56,600
Increase (decrease) in deferred income taxes		(17,200)
Deferred tax expense (benefit)		17,700	(15,513)	$ (5,154)
Valuation allowance		71,474	74,918
Valuation allowance increase (decrease)		(1,800)
Net operating loss and credit carry forwards		64,644	68,735
Unrecognized deferred tax liability for thrift bad-debt reserves		21,400
Cumulative taxable temporary differences		58,000	58,000
Unrecognized tax benefits that would impact effective tax rate		2,500	3,300	3,000
Interest and penalties		(200)	1,100	$ 500
Accrued interest and penalties related to UTBs		1,700	$ 2,500
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance		67,800
Capital Loss Carryforward [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance		3,700
Valuation allowance increase (decrease)		(1,700)
Capital Loss Equity Interest [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance increase (decrease)		(2,100)
Connecticut [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance		56,500
Net operating loss and credit carry forwards		1,200,000
Tax credit carryforwards		1,400
Minimum [Member] | Forecast [Member]
Operating Loss Carryforwards [Line Items]
Decrease in UTBs	$ 1,000
Maximum [Member] | Forecast [Member]
Operating Loss Carryforwards [Line Items]
Decrease in UTBs	$ 2,100
Latest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		12,300
Shareholders' Equity [Member]
Operating Loss Carryforwards [Line Items]
Increase (decrease) in deferred income taxes		$ 1,700