DESCRIPTION OF PLAN (Details) - EBP 002	12 Months Ended
Dec. 31, 2025 USD ($) Year classification	Dec. 31, 2024 USD ($)
EBP, Description of Plan [Line Items]
Age requirement (year) \| Year	21
Requisite service period	1 year
Contribution vesting percentage	100.00%
Contribution vesting service period	3 years
Catch-up contribution age \| Year	50
Participant contribution, automatic deferral rate	3.00%
Participant contribution, maximum annual compensation percentage	10.00%
Participant contribution, annual increase in deferral rate	1.00%
Employer contribution, discretionary employee classifications \| classification	9
Note receivable from participant, minimum borrowing amount	$ 1,000
Note receivable from participant, maximum borrowing amount	$ 50,000
Note receivable from participant, maximum borrowing percentage	50.00%
Note receivable from participant, basis spread on variable rate	1.00%
Note receivable from participant, primary residence maximum borrowing term	5 years
Transfer from Tompkins Financial Corporation Employee Stock Ownership Plan	$ 175,787	$ 200,084
Forfeited nonvested account, decrease from employer contribution	223,800	$ 136,600
Forfeited nonvested account	$ 160,300
Minimum
EBP, Description of Plan [Line Items]
Additional catch-up contribution age \| Year	60
Employer contribution, discretionary percentage	3.00%
Note receivable from participant, general loan maximum borrowing term	1 year
Maximum
EBP, Description of Plan [Line Items]
Additional catch-up contribution age \| Year	63
Employer contribution, discretionary percentage	7.00%
Note receivable from participant, general loan maximum borrowing term	5 years
EBP, Employer Contribution, First Match
EBP, Description of Plan [Line Items]
Employer contribution, matching percentage	100.00%
Employer contribution, participant compensation matched percentage	2.00%
EBP, Employer Contribution, Second Match
EBP, Description of Plan [Line Items]
Employer contribution, matching percentage	100.00%
Employer contribution, participant compensation matched percentage	2.00%

EBP, Catch-Up Age

No definition available.

Name:	tmp_EBPCatchUpAge
Namespace Prefix:	tmp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Catch-Up Age, Additional Contributions

+ References

No definition available.

+ Details

Name:	tmp_EBPCatchUpAgeAdditionalContributions
Namespace Prefix:	tmp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution, Discretionary Employee Classifications

+ References

No definition available.

+ Details

Name:	tmp_EBPEmployerContributionDiscretionaryEmployeeClassifications
Namespace Prefix:	tmp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution, Discretionary Percentage

+ References

No definition available.

+ Details

Name:	tmp_EBPEmployerContributionDiscretionaryPercentage
Namespace Prefix:	tmp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Company contribution and/ or investment earning percentage vesting to the participant in Company Matching Contributions, Fixed Rate Contributions, Discretionary Profit-Sharing Contributions, Qualified Non-Elective Contributions, and Disability Contributions, upon completion of minimum service period or attainment of maximum vesting age

+ References

No definition available.

+ Details

Name:	tmp_EBPEmployerContributionVestingPercentage
Namespace Prefix:	tmp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum Vesting service period for company contribution and/ or investment earning to the participant in Company Matching Contributions, Fixed Rate Contributions, Discretionary Profit-Sharing Contributions, Qualified Non-Elective Contributions, and Disability Contributions.

+ References

No definition available.

+ Details

Name:	tmp_EBPEmployerContributionVestingServicePeriod
Namespace Prefix:	tmp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Note Receivable From Participant, Account, Primary Residence, Borrowing Term

+ References

No definition available.

+ Details

Name:	tmp_EBPNoteReceivableFromParticipantAccountPrimaryResidenceBorrowingTerm
Namespace Prefix:	tmp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Note Receivable From Participant, General Loan, Borrowing Term

+ References

No definition available.

+ Details

Name:	tmp_EBPNoteReceivableFromParticipantGeneralLoanBorrowingTerm
Namespace Prefix:	tmp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Annual increase in percentage of eligible compensation contributed for participant automatically enrolled in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) until the contribution reaches maximum threshold.

+ References

No definition available.

+ Details

Name:	tmp_EBPParticipantContributionAutomaticAnnualIncreaseDeferralRate
Namespace Prefix:	tmp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Loan, Basis Spread On Variable Rate

+ References

No definition available.

+ Details

Name:	tmp_EBPParticipantLoanBasisSpreadOnVariableRate
Namespace Prefix:	tmp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Requisite Age Requirement

+ References

No definition available.

+ Details

Name:	tmp_EBPRequisiteAgeRequirement
Namespace Prefix:	tmp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Requisite Service Period

+ References

No definition available.

+ Details

Name:	tmp_EBPRequisiteServicePeriod
Namespace Prefix:	tmp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of net asset available for benefit transferred to (from) fund within employee stock ownership plan (ESOP) or feature within employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) for debt service.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-02)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitTransferToFromFundWithinEsop
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of employer matching contribution on eligible participant contribution to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionMatchingPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of participant compensation eligible for employer matching contribution for participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionParticipantCompensationMatchedPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of plan asset, in forfeited nonvested account, no longer allocated to participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanForfeitedNonvestedAccount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of decrease in forfeited nonvested account of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) from employer contribution.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (j)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-04(5)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanForfeitedNonvestedAccountDecreaseForEmployerContribution
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingAmount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow to total participant account balance.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingToTotalAccountPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of minimum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMinimumBorrowingAmount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage of eligible compensation contributed for participant automatically enrolled in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanParticipantContributionAutomaticDeferralRate
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of maximum pretax annual compensation that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), is permitted to contribute to total pretax annual compensation.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanParticipantContributionPretaxMaximumAnnualCompensationToTotalCompensationPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=tmp_EBP002Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	tmp_EBPEmployerMatchingContributionAxis=tmp_EBPEmployerContributionFirstMatchMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	tmp_EBPEmployerMatchingContributionAxis=tmp_EBPEmployerContributionSecondMatchMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: