2.4.0.80045 - Disclosure - Securities (Details 3)truefalseIn Thousands, unless otherwise specifiedfalse1false USDfalsefalse$From2013-04-01to2013-06-30_us-gaap_DebtSecuritiesMemberhttp://www.sec.gov/CIK0001005817duration2013-04-01T00:00:002013-06-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$From2012-04-01to2012-06-30_us-gaap_DebtSecuritiesMemberhttp://www.sec.gov/CIK0001005817duration2012-04-01T00:00:002012-06-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$From2013-01-01to2013-06-30_us-gaap_DebtSecuritiesMemberhttp://www.sec.gov/CIK0001005817duration2013-01-01T00:00:002013-06-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDfalsefalse$From2012-01-01to2012-06-30_us-gaap_DebtSecuritiesMemberhttp://www.sec.gov/CIK0001005817duration2012-01-01T00:00:002012-06-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse1false USDtruefalse$From2013-04-01to2013-06-30_us-gaap_DebtSecuritiesMemberhttp://www.sec.gov/CIK0001005817duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseTotal debt securitiesus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DebtSecuritiesMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Total debt securities2true 4tmp_RollforwardOfCreditLossesOnDebtSecuritiesAbstracttmp_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Credit Losses On Debt Securities [Rollforward]3false 5tmp_OtherThanTemporaryImpairmentCreditLossesRecognizedInOtherComprehensiveIncomeCreditLossesOnDebtSecuritiesHeldtmp_falsedebitinstantfalsefalsefalsefalsefalsetruefalsefalseperiodStartLabel1truefalsefalse00USD$falsetruefalse2truefalsefalse245000245USD$falsetruefalse3truefalsefalse441000441USD$falsetruefalse4truefalsefalse245000245USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe cumulative amount of credit losses recognized in other comprehensive income related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).No definition available.false2Credit losses at beginning of the period4false 5tmp_OtherThanTemporaryImpairmentCreditLossesRecognizedInOtherComprehensiveIncomeAdditionsAdditionalCreditLossestmp_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse00USD$falsefalsefalse2truefalsefalse6500065USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalse4truefalsefalse6500065USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis item represents an increase to the cumulative amount of credit losses recognized in other comprehensive income for an other than temporary impairment (OTTI) of a debt security held for which a previous OTTI was recognized and the investor does not intend to sell the debt security and it is not more likely than not that the investor will be required to sell the debt security before recovery of its amortized cost basis.No definition available.false2Credit losses related to securities for which an other-than-temporary impairment was previously recognized5false 5tmp_SalesOfSecuritiesForWhichOtherthantemporaryImpairmentWasPreviouslyRecognizedtmp_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse-441000-441USD$falsefalsefalse4truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis item represents the sales of securities for which an other than temporary impairment (OTTI) of a security held for which a previous OTTI was recognized.No definition available.false2Sales of securities for which an other-than-temporary impairment was previously recognized6false 5tmp_OtherThanTemporaryImpairmentCreditLossesRecognizedInOtherComprehensiveIncomeCreditLossesOnDebtSecuritiesHeldtmp_falsedebitinstantfalsefalsefalsefalsefalsefalsetruefalseperiodEndLabel1truefalsefalse00USD$falsetruefalse2truefalsefalse310000310USD$falsetruefalse3truefalsefalse00USD$falsetruefalse4truefalsefalse310000310USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe cumulative amount of credit losses recognized in other comprehensive income related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).No definition available.false2Ending balance of credit losses on debt securities held for which a portion of an other-than-temporary impairment was recognized in other comprehensive incomefalseSecurities (Details 3) (Total debt securities, USD $)ThousandsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://tompkinstrustco.com/role/SecuritiesDetails346