XML 21 R37.htm IDEA: XBRL DOCUMENT v2.4.1.9
Loans Receivable And Allowance For Loan Losses: Schedule of loans evaluated individually for impairment and collectively evaluated for impairment in the allowance for loan losses (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Sep. 30, 2014
Dec. 31, 2013
Jun. 30, 2013
Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Individually Evaluated for Impairment $ 2,589us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 $ 2,007us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1      
Allowance for Loan Losses, Collectively Evaluated for Impairment 7,733us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment 8,420us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment      
Allowance for Loan Losses, Total 10,322us-gaap_FinancingReceivableAllowanceForCreditLosses 10,427us-gaap_FinancingReceivableAllowanceForCreditLosses 10,427us-gaap_FinancingReceivableAllowanceForCreditLosses 10,745us-gaap_FinancingReceivableAllowanceForCreditLosses 11,136us-gaap_FinancingReceivableAllowanceForCreditLosses
Recorded Investment in Loans, Individually Evaluated for Impairment 28,879us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment 33,474us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment      
Recorded Investment in Loans, Collectively Evaluated for Impairment 556,878us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment 544,451us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment      
Loans receivable 585,757tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross 577,925tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross      
Mortgage loans, one-to-four family          
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Individually Evaluated for Impairment 603us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		 709us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		      
Allowance for Loan Losses, Collectively Evaluated for Impairment 901us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		 941us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		      
Allowance for Loan Losses, Total 1,504us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		 1,650us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		 1,650us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		 1,321us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		 1,449us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember
Recorded Investment in Loans, Individually Evaluated for Impairment 6,920us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		 7,011us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		      
Recorded Investment in Loans, Collectively Evaluated for Impairment 96,101us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		 91,523us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		      
Loans receivable 103,021tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		 98,534tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansOneToFourFamilyMember		      
Mortgage loans, multi-family          
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Individually Evaluated for Impairment 27us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		 39us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		      
Allowance for Loan Losses, Collectively Evaluated for Impairment 341us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		 348us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		      
Allowance for Loan Losses, Total 368us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		 387us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		 387us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		 551us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		 749us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember
Recorded Investment in Loans, Individually Evaluated for Impairment 3,306us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		 3,317us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		      
Recorded Investment in Loans, Collectively Evaluated for Impairment 42,117us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		 42,889us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		      
Loans receivable 45,423tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		 46,206tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansMultiFamilyMember		      
Mortgage loans, construction - speculative one-to-four family          
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		      
Allowance for Loan Losses, Collectively Evaluated for Impairment 50us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		 52us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		      
Allowance for Loan Losses, Total 50us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		 52us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		 52us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		 118us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		 96us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember
Recorded Investment in Loans, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		      
Recorded Investment in Loans, Collectively Evaluated for Impairment 1,191us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		 1,204us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		      
Loans receivable 1,191tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		 1,204tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionSpeculativeOneToFourFamilyMember		      
Mortgage loans, construction – commercial          
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		      
Allowance for Loan Losses, Collectively Evaluated for Impairment 28us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		 78us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		      
Allowance for Loan Losses, Total 28us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		 78us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		 78us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		 80us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		 56us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember
Recorded Investment in Loans, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		      
Recorded Investment in Loans, Collectively Evaluated for Impairment 1,042us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		 2,887us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		      
Loans receivable 1,042tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		 2,887tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCommercialMember		      
Mortgage loans, construction - Multi-family          
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		      
Allowance for Loan Losses, Collectively Evaluated for Impairment 75us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		 25us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		      
Allowance for Loan Losses, Total 75us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		 25us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		 25us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		    
Recorded Investment in Loans, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		      
Recorded Investment in Loans, Collectively Evaluated for Impairment 1,126us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		 419us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		      
Loans receivable 1,126tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		 419tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionMultiFamilyMember		      
Mortgage loans, construction - land development          
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Total       0us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionLandDevelopmentMember		 0us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionLandDevelopmentMember
Mortgage loans, land          
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Individually Evaluated for Impairment 1,724us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		 300us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		      
Allowance for Loan Losses, Collectively Evaluated for Impairment 1,093us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		 1,134us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		      
Allowance for Loan Losses, Total 2,817us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		 1,434us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		 1,434us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		 1,865us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		 1,940us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember
Recorded Investment in Loans, Individually Evaluated for Impairment 5,107us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		 5,158us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		      
Recorded Investment in Loans, Collectively Evaluated for Impairment 23,526us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		 24,431us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		      
Loans receivable 28,633tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		 29,589tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_MortgageLoansLandMember		      
Consumer loans, home equity and second mortgage          
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Individually Evaluated for Impairment 158us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		 162us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		      
Allowance for Loan Losses, Collectively Evaluated for Impairment 643us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		 717us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		      
Allowance for Loan Losses, Total 801us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		 879us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		 879us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		 809us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		 782us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember
Recorded Investment in Loans, Individually Evaluated for Impairment 862us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		 797us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		      
Recorded Investment in Loans, Collectively Evaluated for Impairment 34,892us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		 34,124us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		      
Loans receivable 35,754tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		 34,921tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConsumerLoansHomeEquityAndSecondMortgageMember		      
Consumer loans, other          
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		      
Allowance for Loan Losses, Collectively Evaluated for Impairment 159us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 176us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		      
Allowance for Loan Losses, Total 159us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 176us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 176us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 208us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 200us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember
Recorded Investment in Loans, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 3us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		      
Recorded Investment in Loans, Collectively Evaluated for Impairment 4,453us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 4,696us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		      
Loans receivable 4,453tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 4,699tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		      
Mortgage loans, commercial          
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Individually Evaluated for Impairment 77us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		 797us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		      
Allowance for Loan Losses, Collectively Evaluated for Impairment 3,569us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		 4,039us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		      
Allowance for Loan Losses, Total 3,646us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		 4,836us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		 4,836us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		 5,113us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		 5,275us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember
Recorded Investment in Loans, Individually Evaluated for Impairment 12,527us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		 17,188us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		      
Recorded Investment in Loans, Collectively Evaluated for Impairment 282,586us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		 277,166us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		      
Loans receivable 295,113tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		 294,354tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember		      
Mortgage loans, construction - custom and owner/builder          
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		      
Allowance for Loan Losses, Collectively Evaluated for Impairment 460us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		 450us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		      
Allowance for Loan Losses, Total 460us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		 450us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		 450us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		 332us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		 262us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember
Recorded Investment in Loans, Individually Evaluated for Impairment 157us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		      
Recorded Investment in Loans, Collectively Evaluated for Impairment 36,887us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		 34,553us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		      
Loans receivable 37,044tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		 34,553tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= tsbk_ConstructionCustomAndOwnerbuilderMember		      
Commercial business loans          
Financing Receivable, Allowance for Credit Losses [Line Items]          
Allowance for Loan Losses, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		      
Allowance for Loan Losses, Collectively Evaluated for Impairment 414us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		 460us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		      
Allowance for Loan Losses, Total 414us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		 460us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		 460us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		 348us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		 327us-gaap_FinancingReceivableAllowanceForCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember
Recorded Investment in Loans, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		      
Recorded Investment in Loans, Collectively Evaluated for Impairment 32,957us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		 30,559us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		      
Loans receivable $ 32,957tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember		 $ 30,559tsbk_LoansReceivableIncludingLoansHeldForSaleAndUndisbursedPortionOfLoanBalanceGross
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialLoanMember