Loan Receivable and Allowance for Loan and Lease Losses Credit Risk Profile Based on Payment Activity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
One- to Four family Residential Loan	$ 72,099	$ 73,987
Loans and Leases Receivable, Gross, Consumer	247	250
Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
One- to Four family Residential Loan	65,433	66,344
Loans and Leases Receivable, Gross, Consumer	247	212
Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
One- to Four family Residential Loan	$ 6,666	$ 7,643
Loans and Leases Receivable, Gross, Consumer	0	38