Investment And Mortgage-Backed Securities, Available For Sale (Details) (USD $)	Jun. 30, 2012	Mar. 31, 2012
Held to Maturity GNMA mortgage-backed securities amortized cost	$ 41,900,000	$ 42,200,000
Held to Maturity GNMA mortgage-backed securities fair value	$ 43,800,000	$ 43,900,000