Carrying Amounts and Fair Value of Financial Instruments: Schedule of Assets Measured on Recurring Basis (Details) (Assets, USD $)	Jun. 30, 2012	Mar. 31, 2012
FHLB Securities
Significant Other Observable Inputs (Level 2)	$ 2,511,640	$ 2,698,894
FNMA and FHLMC Bonds
Significant Other Observable Inputs (Level 2)	1,000,790	2,921,851
SBA Bonds
Significant Other Observable Inputs (Level 2)	89,401,019	86,278,802
Tax Exempt Municipal Securities
Significant Other Observable Inputs (Level 2)	31,969,427
Mortgage-Backed Securities
Significant Other Observable Inputs (Level 2)	233,381,604	237,853,835
Equity Securities
Significant Other Observable Inputs (Level 2)	72,750	75,750
Total Securities
Significant Other Observable Inputs (Level 2)	358,337,230	353,954,857
Tax Exempt Municipal Bonds
Significant Other Observable Inputs (Level 2)		$ 24,125,725