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Mortgage-backed Securities: Schedule of Temporarily Impaired Mortgage-backed securities, Fair Value and Unrealized Losses (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Mar. 31, 2014
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Real estate mortgage investment conduits |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 1,323 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_RealEstateMortgageInvestmentConduitsMember | [1] | $ 4,996 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_RealEstateMortgageInvestmentConduitsMember | [2]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | (1)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_RealEstateMortgageInvestmentConduitsMember | [1] | (77)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_RealEstateMortgageInvestmentConduitsMember | [2]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 1,323 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_RealEstateMortgageInvestmentConduitsMember | [1] | 4,996 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_RealEstateMortgageInvestmentConduitsMember | [2]
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | (1)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_RealEstateMortgageInvestmentConduitsMember | [1] | (77)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_RealEstateMortgageInvestmentConduitsMember | [2]
Mortgage-backed |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  |  | 49,177 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_MortgageBackedMember | [3]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses |  |  | (547)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_MortgageBackedMember | [3]
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 5,098 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_MortgageBackedMember | [3] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | (60)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_MortgageBackedMember | [3] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 5,098 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_MortgageBackedMember | [3] | 49,177 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_MortgageBackedMember | [3]
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | (60)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_MortgageBackedMember | [3] | (547)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_MortgageBackedMember | [3]
Other mortgage-backed securities |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  |  | 1,526 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_OtherMortgageBackedSecurities3Member | [4]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses |  |  | (13)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_OtherMortgageBackedSecurities3Member | [4]
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 1,417 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_OtherMortgageBackedSecurities3Member | [4] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | (12)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_OtherMortgageBackedSecurities3Member | [4] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 1,417 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_OtherMortgageBackedSecurities3Member | [4] | 1,526 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_OtherMortgageBackedSecurities3Member | [4]
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | (12)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_OtherMortgageBackedSecurities3Member | [4] | (13)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_OtherMortgageBackedSecurities3Member | [4]
All Mortgage-backed Securities |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 1,323 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_AllMortgageBackedSecuritiesMember |  | 55,699 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_AllMortgageBackedSecuritiesMember |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | (1)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_AllMortgageBackedSecuritiesMember |  | (637)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_AllMortgageBackedSecuritiesMember |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 6,515 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_AllMortgageBackedSecuritiesMember |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | (72)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_AllMortgageBackedSecuritiesMember |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 7,838 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_AllMortgageBackedSecuritiesMember |  | 55,699 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_AllMortgageBackedSecuritiesMember |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | $ (73)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_AllMortgageBackedSecuritiesMember |  | $ (637)us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2 / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = fil_AllMortgageBackedSecuritiesMember |
[1] | Comprised of a FHLMC security.
[2] | Comprised of FHLMC, FNMA and Ginnie Mae issued securities.
[3] | Comprised of FHLMC and FNMA issued securities.
[4] | Comprised of SBA issued securities.

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- Definition Amount of the excess of amortized cost basis over fair value of securities that have been in a loss position for twelve months or longer for securities which are categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
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- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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