XML 102 R87.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Trust Preferred Debentures (Details) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 31, 2003 USD ($) | Dec. 31, 2018 USD ($) subsidiary_trust | Jun. 30, 2003 USD ($) | Sep. 26, 2002 USD ($)
Debt Instrument [Line Items] |  |  |  |
Number of unconsolidated subsidiary trusts | subsidiary_trust |  | 3 |  |
Sleepy Hollow Capital Trust I |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Par Amount | $ 4,000,000 | $ 4,000,000 |  |
Interest rate, basis spread | 3.05% |  |  |
Common equity securities issued to the Company | $ 100,000 |  |  |
Sleepy Hollow Capital Trust I | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, basis spread |  | 3.05% |  |
Leesport Capital Trust II |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Par Amount |  | $ 10,000,000 |  | $ 10,000,000
Leesport Capital Trust II | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, basis spread |  | 3.45% |  |
Madison Statutory Trust I |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Par Amount |  | $ 5,000,000 | $ 5,000,000 |
Madison Statutory Trust I | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate, basis spread |  | 3.10% |  |
Madison Statutory Trust I | Madison Statutory Trust I | Unconsolidated subsidiary |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Ownership percentage by parent |  | 100.00% |  |
Leesport Capital Trust II | Leesport Capital Trust II | Unconsolidated subsidiary |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Ownership percentage by parent |  | 100.00% |  |
Sleepy Hollow Capital Trust I | Tompkins Capital Trust I | Unconsolidated subsidiary |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Ownership percentage by parent |  | 100.00% |  |

X
- Definition The value of common equity securities issued to the Company from the trust. Proceeds of these offerings were used to acquire Subordinated Debentures currently held in trust. + References No definition available. + Details
Name: | tmp_CommonEquitySecuritiesIssuedToTheCompany
Namespace Prefix: | tmp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Nature of Operations, Number of Unconsolidated Subsidiary Trusts + References No definition available. + Details
Name: | tmp_NatureOfOperationsNumberOfUnconsolidatedSubsidiaryTrusts
Namespace Prefix: | tmp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
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_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=tmp_SleepyHollowTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=tmp_LeesportTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=tmp_MadisonTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | tmp_SubsidiaryNameAxis=tmp_MadisonTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | tmp_SubsidiaryNameAxis=tmp_LeesportTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | tmp_SubsidiaryNameAxis=tmp_TompkinsTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |