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RIVERVIEW BANCORP, INC. AND SUBSIDIARY - CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | Mar. 31, 2015 | Mar. 31, 2014
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Statement of Financial Position |  |
Interest-Earning accounts included in Cash | $ 45,490 us-gaap_InterestBearingDepositsInBanks | $ 51,715 us-gaap_InterestBearingDepositsInBanks
Amortized Cost of Investment securities available for sale | 15,927 us-gaap_AvailableForSaleSecuritiesShortTermInvestmentsAmortizedCost | 23,866 us-gaap_AvailableForSaleSecuritiesShortTermInvestmentsAmortizedCost
Fair Value of Mortgage-backed securities held to maturity | 95,382 us-gaap_MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure | 79,083 us-gaap_MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure
Amortized Cost of Mortgage-backed securities available for sale | 88 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis | 104 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Loans receivable Allowance for Loan Losses | $ 10,762 us-gaap_FinancingReceivableAllowanceForCreditLosses | $ 12,551 us-gaap_FinancingReceivableAllowanceForCreditLosses
Serial preferred stock par value per share | $ 0.01 us-gaap_PreferredStockParOrStatedValuePerShare | $ 0.01 us-gaap_PreferredStockParOrStatedValuePerShare
Serial preferred stock shares authorized | 250,000 us-gaap_PreferredStockSharesAuthorized | 250,000 us-gaap_PreferredStockSharesAuthorized
Serial preferred stock shares issued | 0 us-gaap_PreferredStockSharesIssued | 0 us-gaap_PreferredStockSharesIssued
Serial preferred stock shares outstanding | 0 us-gaap_PreferredStockSharesOutstanding | 0 us-gaap_PreferredStockSharesOutstanding
Common stock par value per share | $ 0.01 us-gaap_CommonStockParOrStatedValuePerShare | $ 0.01 us-gaap_CommonStockParOrStatedValuePerShare
Common stock shares authorized | 50,000,000 us-gaap_CommonStockSharesAuthorized | 50,000,000 us-gaap_CommonStockSharesAuthorized
Common stock shares issued | 22,489,890 us-gaap_CommonStockSharesIssued | 22,471,890 us-gaap_CommonStockSharesIssued
Common stock shares outstanding | 22,489,890 us-gaap_CommonStockSharesOutstanding | 22,471,890 us-gaap_CommonStockSharesOutstanding

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- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Fair value of securitized, pay-through debt securities collateralized by real estate mortgage loans classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Mortgage-Backed Securities -URI http://asc.fasb.org/extlink&oid=6517959 + Details
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