XML 117 R103.htm IDEA: XBRL DOCUMENT
v3.23.3

Commitments and Contingencies: Supply Commitment (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Sep. 30, 2022
--- | --- | ---
Commitments and Contingencies Disclosure [Abstract] |  |
Undisbursed portion of construction loans in process (see Note 4) | $ 103,194 | $ 103,168
Undisbursed lines of credit | 141,537 | 128,791
Commitments to extend credit | $ 31,667 | $ 14,699

X
- References No definition available. + Details
Name: | tsbk_CommitmentsToExtendCredit
Namespace Prefix: | tsbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | tsbk_UndisbursedLinesOfCredit
Namespace Prefix: | tsbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | tsbk_UndisbursedPortionOfConstructionLoansInProcess
Namespace Prefix: | tsbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration