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Loans Receivable And Allowance For Loan Losses: Schedule 1 of Troubled debt restructured loans (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	$ 14,371us-gaap_FinancingReceivableModificationsRecordedInvestment	$ 19,088us-gaap_FinancingReceivableModificationsRecordedInvestment
Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	12,337us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_AccrualMember	16,804us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_AccrualMember
Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	2,034us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_NonAccrualMember	2,284us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_NonAccrualMember
Mortgage loans, one-to-four family
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	2,795us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansOneToFourFamilyMember	2,867us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansOneToFourFamilyMember
Mortgage loans, one-to-four family | Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	2,624us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_AccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansOneToFourFamilyMember	2,634us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_AccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansOneToFourFamilyMember
Mortgage loans, one-to-four family | Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	171us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_NonAccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansOneToFourFamilyMember	233us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_NonAccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansOneToFourFamilyMember
Mortgage loans, multi-family
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	3,306us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansMultiFamilyMember	3,317us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansMultiFamilyMember
Mortgage loans, multi-family | Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	3,306us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_AccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansMultiFamilyMember	3,317us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_AccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansMultiFamilyMember
Mortgage loans, multi-family | Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	0us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_NonAccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansMultiFamilyMember	0us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_NonAccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansMultiFamilyMember
Mortgage loans, commercial
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	6,798us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	11,428us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialMortgageBackedSecuritiesMember
Mortgage loans, commercial | Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	5,359us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_AccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	9,960us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_AccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialMortgageBackedSecuritiesMember
Mortgage loans, commercial | Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	1,439us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_NonAccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialMortgageBackedSecuritiesMember	1,468us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_NonAccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialMortgageBackedSecuritiesMember
Mortgage loans, land
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	1,022us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansLandMember	1,025us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansLandMember
Mortgage loans, land | Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	750us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_AccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansLandMember	594us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_AccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansLandMember
Mortgage loans, land | Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	272us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_NonAccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansLandMember	431us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_NonAccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_MortgageLoansLandMember
Consumer loans, home equity and second mortgage
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	450us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember	451us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember
Consumer loans, home equity and second mortgage | Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	298us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_AccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember	299us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_AccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember
Consumer loans, home equity and second mortgage | Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	$ 152us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_NonAccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember	$ 152us-gaap_FinancingReceivableModificationsRecordedInvestment / tsbk_AccrualStatusAxis = tsbk_NonAccrualMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

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