Summary of Significant Accounting Policies (Details Textual) (USD $)	0 Months Ended	12 Months Ended
	Nov. 08, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jul. 29, 2012
Summary of Significant Accounting Policies (Additional Textual) [Abstract]
Capitalization related to MSRs		$ 1,106,000	$ 681,000	$ 1,048,000
Amortization related to MSRs		18,000	578,000	592,000
Carrying value of the Corporation's MSRs		3,200,000	3,300,000
Servicing residential mortgage loans		$ 426,500,000	$ 446,100,000
Loan Delinquency Period Discontinuance of Accrual of Interest		3 months
Delinquency period for charge off unsecured credits		90 days
Percentage of Valuation Allowance				100.00%
Number of Warrants Issued	2,857,143	2,857,143
Exercise price of warrants	2.10				1.75
Expiry date of warrant		11/6/2017
Options outstanding to purchase shares of common stock		576,888	587,342	463,642
Maximum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Prepayment speed range used for determining fair value		33.00%	25.50%
Discount rates range used for determining fair value		9.00%	9.00%
Minimum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Prepayment speed range used for determining fair value		4.40%	6.00%
Discount rates range used for determining fair value		7.50%	7.50%
Buildings and improvements [Member] | Maximum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life of assets		50 years
Buildings and improvements [Member] | Minimum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life of assets		10 years
Furniture, fixtures and equipment [Member] | Maximum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life of assets		25 years
Furniture, fixtures and equipment [Member] | Minimum [Member]
Summary of Significant Accounting Policies (Textual) [Abstract]
Estimated useful life of assets		3 years