Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Components of income tax expense (benefit) [Abstract]
Federal - current	$ 18,930,000	$ 0
State - current	15,911,000	48,000
Total current	34,841,000	48,000
Federal - deferred	38,167,000	0
Change in valuation allowance	(38,167,000)	0
Total deferred	0	0
Income tax expense (benefit)	34,841,000	48,000
Components of pretax income/loss and difference between income taxes [Abstract]
Income (loss) before income taxes	180,770,000	(1,845,000)
Tax expense (benefit) [Abstract]
Tax at statutory federal rate	63,270,000	646,000
Permanent items	(6,173,000)	0
State income taxes	15,911,000	48,000
Accounting loss benefit not recognized	0	(646,000)
Change in valuation allowance	(38,167,000)	0
Income tax expense (benefit)	34,841,000	48,000
Reconciliation of federal statutory rate to effective income tax rate [Abstract]
Tax at statutory federal rate (in hundredths)	35.00%	35.00%
State income taxes (in hundredths)	8.80%	2.60%
Accounting loss benefit not recognized (in hundredths)	0.00%	(35.00%)
Change in valuation allowance (in hundredths)	(21.10%)	0.00%
Permanent differences, tax credits and other adjustments (in hundredths)	(3.40%)	0.00%
Effective income tax rate (in hundredths)	19.30%	2.60%
Estimated remaining initial tax basis related to Company's investment in Carteret/Carteret FSB	152,000,000
Approximate amount of tax basis related to Company's investment in Carteret/Carteret FSB to be utilized in connection with the filing of the 1992 Amended Return	56,000,000
Approximate tax basis related to Company's investment in Carteret/Carteret FSB remaining after recognition of the 1992 Amended Return	96,000,000
Federal income tax liability owed by Carteret FSB	32,000,000
Federal income tax liability including interest and penalty, minimum	501,000
NOL carryforward deductions utilized to reduce current federal taxable income	25,000,000
Amount paid related to federal income taxes attributable to Alternative Minimum Tax	501,000
Tax gross-up from the United States recorded as receivable	501,000
Uncertain tax position reserve	34,157,000	0
Uncertain tax position reserve pertaining to federal	18,400,000
Indemnification asset for federal tax gross-up as it relates to tax reserve	18,400,000
Connecticut NOL carryforward deductions utilized	25,000,000
Connecticut net operating loss carryforward deductions remaining available for future use	1,900,000
Net operating loss expected to be carryback to prior tax years	56,000,000
Operating Loss Carryforwards	24,100,000
AMT Credits	21,000,000
Net deferred tax asset [Abstract]
Net deferred tax asset	0	38,000,000
Valuation allowance	0	(38,000,000)
Net deferred tax asset recognized	$ 0	$ 0