XML 76 R64.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Segment and Related Information - Narrative (Details) | 3 Months Ended
--- | ---
Mar. 31, 2024 office banking_Office segment
Segment Reporting Information [Line Items] |
Number of reportable segments | segment | 3
Tompkins Insurance Agencies, Inc. |
Segment Reporting Information [Line Items] |
Noncontrolling interest, ownership percentage by parent | 100.00%
Tompkins, Cayuga, Cortland and Schuyler Counties, New York |
Segment Reporting Information [Line Items] |
Nature of operations, number of banking offices | 12
Wyoming, Livingston, Genessee, Orleans and Monroe, New York |
Segment Reporting Information [Line Items] |
Nature of operations, number of banking offices | 15
Putnam Country, Dutchess Country and Westchester, New York |
Segment Reporting Information [Line Items] |
Nature of operations, number of banking offices | 12
Berks, Montgomery, Philadelphia, Deleware and Schuylkill, Pennsylvania |
Segment Reporting Information [Line Items] |
Nature of operations, number of banking offices | 16
Western New York |
Segment Reporting Information [Line Items] |
Number of offices | office | 4

X
- Definition Nature Of Operations, Number of Banking Offices + References No definition available. + Details
Name: | tmp_NatureOfOperationsNumberOfBankingOffices
Namespace Prefix: | tmp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nature Of Operations, Number Of Offices + References No definition available. + Details
Name: | tmp_NatureOfOperationsNumberOfOffices
Namespace Prefix: | tmp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-18 + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | srt_OwnershipAxis=tmp_TompkinsInsuranceAgenciesIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=tmp_TompkinsCayugaCortlandandSchuylerCountiesNewYorkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=tmp_WyomingLivingstonGenesseeOrleansandMonroeNewYorkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=tmp_PutnamCountryDutchessCountryandWestchesterNewYorkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=tmp_BerksMontgomeryPhiladelphiaDelewareandSchuylkillPennsylvaniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=tmp_WesternNewYorkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |