Borrowed Money Borrowings (Details) (USD $) In Thousands, unless otherwise specified	4 Months Ended	12 Months Ended
	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2011
Subordinated Borrowing [Line Items]
Advances from Federal Home Loan Banks	$ 25,026	$ 58,000	$ 50,057
Guaranteed debt	0	0	14,068
Subordinated Debt	18,403	18,403	18,403
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Weighted Average Interest Rate	3.19%	1.63%	2.70%
Guaranteed debt rate paid at year end	0.00%	0.00%	1.69%
Subordinated Borrowing, Interest Rate	2.99%	2.99%	4.35%
Federal Home Loan Bank, Advances, Activity for Year, Maximum Outstanding at any Month End	65,034	69,011	69,086
Guaranteed debt outstanding at any month end	14,068	0	14,068
Subordinated Debt Maximum Outstanding at any month end	18,403	18,403	18,403
Federal Home Loan Bank, Advances, Activity for Year, Average Balance of Agreements Outstanding	39,305	31,531	53,454
Guaranteed debt average amount outstanding for year	8,206	0	14,068
Subordinated Debt Average Outstanding for year	$ 18,403	$ 18,403	$ 18,403
Federal Home Loan Bank, Advances, Activity for Year, Average Interest Rate for Year	2.89%	2.53%	2.72%
Guaranteed Debt average rate paid during year	1.69%	0.00%	1.69%
Subordinated Debt weighted average rate paid	3.43%	3.11%	4.45%