XML 43 R34.htm IDEA: XBRL DOCUMENT v3.22.0.1

Investment Securities: Narrative-Realized Gains (Losses) (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2021 USD ($) security	Dec. 31, 2020 USD ($) security	Sep. 30, 2021 USD ($)
Investments [Abstract]
Loss on sale of securities	$ 3	$ 3
Held-to-maturity securities, realized loss, number of securities | security	15	15
Security owned and pledged as collateral	$ 89,580		$ 97,600

X

- Definition

Held-to-Maturity Securities, Gross Realized Loss, Number of Securities

+ References

No definition available.

+ Details

Name:	tsbk_HeldToMaturitySecuritiesGrossRealizedLossNumberOfSecurities
Namespace Prefix:	tsbk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Marketable Securities, Realized Loss

+ References

No definition available.

+ Details

Name:	tsbk_MarketableSecuritiesRealizedLoss
Namespace Prefix:	tsbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_InvestmentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)(i)
-URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728

+ Details

Name:	us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant