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Timberland Bancorp, Inc. and Subsidiary Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2015 | Mar. 31, 2014
Comprehensive income: |  |  |  |
Net income | $ 1,451 us-gaap_NetIncomeLoss | $ 1,159 us-gaap_NetIncomeLoss | $ 3,178 us-gaap_NetIncomeLoss | $ 2,770 us-gaap_NetIncomeLoss
Unrealized holding gain (loss) on investment securities available for sale, net of tax | 8 us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax | (69)us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax | (25)us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax | (67)us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax
Change in OTTI on investment securities held to maturity, net of tax: |  |  |  |
Additional amount recovered related to credit loss for which OTTI was previously recognized | 1 tsbk_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLossesHeldToMaturitySecuritiesNetOfTax | 1 tsbk_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLossesHeldToMaturitySecuritiesNetOfTax | 1 tsbk_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLossesHeldToMaturitySecuritiesNetOfTax | 0 tsbk_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLossesHeldToMaturitySecuritiesNetOfTax
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold, Held-to-maturity Securities, Net of Tax | 1 tsbk_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSoldHeldToMaturitySecuritiesNetOfTax | 0 tsbk_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSoldHeldToMaturitySecuritiesNetOfTax | 1 tsbk_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSoldHeldToMaturitySecuritiesNetOfTax | 0 tsbk_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSoldHeldToMaturitySecuritiesNetOfTax
Accretion of OTTI on investment securities held to maturity, net of tax | 7 us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments | 12 us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments | 15 us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments | 24 us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments
Other Comprehensive Income (Loss), Net of Tax | 17 us-gaap_OtherComprehensiveIncomeLossNetOfTax | (56)us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |
Total comprehensive income | $ 1,468 us-gaap_ComprehensiveIncomeNetOfTax | $ 1,103 us-gaap_ComprehensiveIncomeNetOfTax | $ 3,170 us-gaap_ComprehensiveIncomeNetOfTax | $ 2,727 us-gaap_ComprehensiveIncomeNetOfTax

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