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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
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Dec. 31, 2014 | Dec. 31, 2013
Comprehensive income: |  |
Net income | $ 1,727 us-gaap_NetIncomeLoss | $ 1,611 us-gaap_NetIncomeLoss
Unrealized holding gain (loss) on investment securities available for sale, net of tax | (33)us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax | 2 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 | 0 tsbk_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLossesHeldToMaturitySecuritiesNetOfTax | (1)tsbk_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLossesHeldToMaturitySecuritiesNetOfTax
Accretion of OTTI on investment securities held to maturity, net of tax | 8 us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments | 12 us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments
Other Comprehensive Income (Loss), Net of Tax | (25)us-gaap_OtherComprehensiveIncomeLossNetOfTax | 13 us-gaap_OtherComprehensiveIncomeLossNetOfTax
Total comprehensive income | $ 1,702 us-gaap_ComprehensiveIncomeNetOfTax | $ 1,624 us-gaap_ComprehensiveIncomeNetOfTax

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- Definition The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The change in unrealized holding gain (loss), net of tax, on available-for-sale securities included in a separate component of shareholders' equity during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 + Details
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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=35737396 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 + Details
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