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Investment Securities (Details) (USD $)
12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
Details      
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds $ 2,500,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds $ 0us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds $ 0us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds
Investment Securities, Gross Realized Gains from Sales $ 31,000fil_InvestmentSecuritiesGrossRealizedGainsFromSales $ 0fil_InvestmentSecuritiesGrossRealizedGainsFromSales $ 0fil_InvestmentSecuritiesGrossRealizedGainsFromSales