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17. Fair Value Measurement: Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Mar. 31, 2012
Trust Preferred
    
Investments, Fair Value Disclosure $ 1,238 $ 1,166
Agency Securities
    
Investments, Fair Value Disclosure 4,978 4,999
Real Estate Mortgage Investment Conduits
    
Investments, Fair Value Disclosure 237 329
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC)
    
Investments, Fair Value Disclosure 191 636
Federal National Mortgage Association Certificates and Obligations (FNMA)
    
Investments, Fair Value Disclosure 3 9
Recurring Assets Measured at Fair Value
    
Investments, Fair Value Disclosure 6,647 7,288
Municipal Bonds
    
Investments, Fair Value Disclosure   149
Fair Value, Inputs, Level 2 | Agency Securities
    
Investments, Fair Value Disclosure 4,978 4,999
Fair Value, Inputs, Level 2 | Real Estate Mortgage Investment Conduits
    
Investments, Fair Value Disclosure 237 329
Fair Value, Inputs, Level 2 | Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC)
    
Investments, Fair Value Disclosure 191 636
Fair Value, Inputs, Level 2 | Federal National Mortgage Association Certificates and Obligations (FNMA)
    
Investments, Fair Value Disclosure 3 9
Fair Value, Inputs, Level 2 | Recurring Assets Measured at Fair Value
    
Investments, Fair Value Disclosure 5,409 6,122
Fair Value, Inputs, Level 2 | Municipal Bonds
    
Investments, Fair Value Disclosure   149
Fair Value, Inputs, Level 3 | Trust Preferred
    
Investments, Fair Value Disclosure 1,238 1,166
Fair Value, Inputs, Level 3 | Recurring Assets Measured at Fair Value
    
Investments, Fair Value Disclosure $ 1,238 $ 1,166