Loan Receivable and Allowance for Loan and Lease Losses Text Figures (Details) (USD $)	9 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of securities with unrealized loss	6		14
Number of loans modified with interest rate concession of 1.25%	1
Loans modified int. rate concession of 1.25%	$ 500,000
Loans Rate Concession of 1.25%	1.25%
Number of loans with charge off of $0.9 million	1
Charge off of one loan	900,000
Number of loan modification with int. rate concession		3
Loans Rate Concession of 5%		5.00%
Loans with int. rate concession of 5%		900,000
Loan Rate Concession of 3.2%		3.20%
Loans with int. rate concession of 3.2%		1,900,000
Loan Rate Concession of 0.125%		0.125%
Loans with int. rate concession of 0.125%		600,000
Number of Modified Loan Subsequently Defaulted	1
Modified Loan Subsequently Defaulted	2,400,000
Impaired and non performing TDR loans			21,000,000
Loans and Leases Receivable, Impaired, Nonperforming, Nonaccrual of Interest	35,566,000		54,588,000
Loans moved to Held for Sale	10
Loans Receivable Held-for-sale, Reconciliation to Cash Flow, Additions to Held-for-sale	9,900,000
Amount of TDR loans upgraded to performing	5
TDR loan upgraded to performing	1,700,000
Number of paid off non performing construction loans	1
paid off non performing construction loans	5,000,000
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	12,029,000		31,464,000
Financing Receivable, Modifications, Recorded Investment	18,000,000		21,000,000	[1]
impaired loans	5,500,000		2,100,000	[2]
Impaired Financing Receivable, Related Allowance	2,657,000		949,000
Loans in TDR performing modified terms	11
TDR Loans on Accrual Status	5,100,000
Other non-performing asset	22,000,000
Other OREO of 9 foreclosed properties	$ 3,000,000

[1] (2) The performing TDR category details those loans that the Company has determined that the future collection of principal and interest is reasonably assured, this generally represents those borrowers who have performed according to the restructured terms for a period of at least six months.

[2] (1) Consists of loans which are less than 90 days past due but impaired due to other risk characteristics.