Label	Element	Value
Unallocated Financing Receivables [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	$ 995,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	928,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	440,008,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	411,691,000
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	1,086,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	1,264,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	111,079,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	108,392,000
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	7,586,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	13,993,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	1,740,188,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	1,598,302,000
Financing Receivables30 To59 Days Past Due [Member] | Unallocated Financing Receivables [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	628,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	550,000
Financing Receivables30 To59 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	420,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	466,000
Financing Receivables30 To59 Days Past Due [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	2,038,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	3,231,000
Financing Receivables Equal To Greater Than90 Days Past Due [Member] | Unallocated Financing Receivables [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	105,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	230,000
Financing Receivables Equal To Greater Than90 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	323,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	501,000
Financing Receivables Equal To Greater Than90 Days Past Due [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	4,731,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	9,152,000
Financing Receivables60 To89 Days Past Due [Member] | Unallocated Financing Receivables [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	262,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	148,000
Financing Receivables60 To89 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	343,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	297,000
Financing Receivables60 To89 Days Past Due [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	817,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	1,610,000
Unallocated Financing Receivables [Member] | Pass [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	405,611,000
Unallocated Financing Receivables [Member] | Substandard [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	7,008,000
Unallocated Financing Receivables [Member] | Including Accruing Troubled Debt Restructurings [Member] | Unallocated Financing Receivables [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,894,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	23,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	2,927,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	78,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	2,890,000
Unallocated Financing Receivables [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Unallocated Financing Receivables [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,894,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	23,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	2,927,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	78,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	2,890,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	8,770,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	11,055,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	326,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	13,332,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	9,520,000
Non Impaired Financing Receivable Related Allowance	us-gaap_LoansAndLeasesReceivableOtherAllowance	14,281,000
Non Impaired Financing Receivable Related Allowance	us-gaap_LoansAndLeasesReceivableOtherAllowance	12,899,000
Non-accrual loans and leases	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus	16,512,000
Non-accrual loans and leases	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus	10,791,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	8,328,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	7,423,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	1,609,101,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	1,756,842,000
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	1,617,429,000
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	1,764,265,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	us-gaap_OtherRealEstateAndForeclosedAssets	1,074,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	us-gaap_OtherRealEstateAndForeclosedAssets	1,958,000
Recoveries	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery	2,834,000
Recoveries	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery	544,000
Financing Receivable, Allowance for Credit Losses, Write-downs	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs	1,800,000
Financing Receivable, Allowance for Credit Losses, Write-downs	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs	1,095,000
Provision for credit losses	us-gaap_ProvisionForLoanLeaseAndOtherLosses	(2,752,000)
Provision for credit losses	us-gaap_ProvisionForLoanLeaseAndOtherLosses	(1,157,000)
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	277,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	355,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	16,325,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	14,607,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	12,899,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	12,141,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	8,321,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | Nonperforming Financing Receivable [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	8,321,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | Pass [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	1,705,266,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | Special Mention [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	3,668,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | Substandard [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	47,010,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,866,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	741,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	326,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	51,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | With No Related Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	6,904,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	10,314,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	13,332,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	9,520,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	226,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	355,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	12,141,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	8,321,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | Financing Receivables30 To59 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	1,189,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	2,551,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | Financing Receivables Equal To Greater Than90 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	4,034,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	4,342,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | Financing Receivables60 To89 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	3,105,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	530,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | Including Accruing Troubled Debt Restructurings [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	13,720,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	518,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	19,577,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	461,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	18,041,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	6,816,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	518,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	6,245,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	235,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	5,900,000
Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	6,904,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	13,332,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	226,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	12,141,000
Consumer Portfolio Segment [Member] | Consumer Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	112,165,000
Consumer Portfolio Segment [Member] | Pass [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	109,656,000
Consumer Portfolio Segment [Member] | Pass [Member] | Consumer Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	112,165,000
Consumer Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | Consumer Portfolio Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	881,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	58,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	823,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	347,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	823,000
Consumer Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,024,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	34,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	939,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	102,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	939,000
Consumer Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Consumer Portfolio Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	881,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	58,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	823,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	347,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	823,000
Consumer Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,024,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	34,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	939,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	102,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	939,000
Commercial Real Estate Portfolio Segment [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	3,853,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	6,118,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	677,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	35,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	7,666,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	5,933,000
Non Impaired Financing Receivable Related Allowance	us-gaap_LoansAndLeasesReceivableOtherAllowance	15,248,000
Non Impaired Financing Receivable Related Allowance	us-gaap_LoansAndLeasesReceivableOtherAllowance	13,922,000
Non-accrual loans and leases	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus	9,130,000
Non-accrual loans and leases	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus	7,022,000
Loans and leases 90 days or more past due, still accruing	us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	14,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	3,633,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	3,984,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	941,412,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	1,153,264,000
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	945,045,000
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	1,157,248,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	us-gaap_OtherRealEstateAndForeclosedAssets	10,212,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	us-gaap_OtherRealEstateAndForeclosedAssets	3,746,000
Recoveries	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery	11,727,000
Recoveries	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery	1,373,000
Financing Receivable, Allowance for Credit Losses, Write-downs	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs	1,039,000
Financing Receivable, Allowance for Credit Losses, Write-downs	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs	521,000
Provision for credit losses	us-gaap_ProvisionForLoanLeaseAndOtherLosses	(4,648,000)
Provision for credit losses	us-gaap_ProvisionForLoanLeaseAndOtherLosses	(2,820,000)
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	25,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	14,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	9,885,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	15,925,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	13,957,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	7,583,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	5,933,000
Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	5,933,000
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	1,135,618,000
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	15,697,000
Commercial Real Estate Portfolio Segment [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	300,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	739,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	677,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	35,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	1,614,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	1,130,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	10,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	1,614,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	1,130,000
Commercial Real Estate Portfolio Segment [Member] | With No Related Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	3,553,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	5,379,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	6,052,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	4,803,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	25,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	4,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	5,969,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	4,803,000
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables30 To59 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	1,017,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	2,101,000
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables Equal To Greater Than90 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	2,409,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	1,443,000
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables60 To89 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	207,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	440,000
Commercial Real Estate Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	5,312,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	721,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	9,380,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	67,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	9,297,000
Commercial Real Estate Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,759,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	721,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	3,328,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	42,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	3,328,000
Commercial Real Estate Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	3,553,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	6,052,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	25,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	5,969,000
Home Equity [Member] | Home Equity [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	589,752,000
Home Equity [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,412,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,543,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	1,795,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	1,600,000
Non Impaired Financing Receivable Related Allowance	us-gaap_LoansAndLeasesReceivableOtherAllowance	6,949,000
Non Impaired Financing Receivable Related Allowance	us-gaap_LoansAndLeasesReceivableOtherAllowance	7,174,000
Non-accrual loans and leases	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus	4,021,000
Non-accrual loans and leases	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus	3,817,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	4,753,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	6,400,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	584,999,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	622,446,000
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	589,752,000
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	628,846,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	us-gaap_OtherRealEstateAndForeclosedAssets	101,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	us-gaap_OtherRealEstateAndForeclosedAssets	39,000
Recoveries	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery	639,000
Recoveries	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery	506,000
Financing Receivable, Allowance for Credit Losses, Write-downs	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs	1,204,000
Financing Receivable, Allowance for Credit Losses, Write-downs	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs	1,884,000
Provision for credit losses	us-gaap_ProvisionForLoanLeaseAndOtherLosses	(2,028,000)
Provision for credit losses	us-gaap_ProvisionForLoanLeaseAndOtherLosses	1,603,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	22,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	10,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	9,542,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	6,949,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	7,174,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	1,795,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	857,000
Home Equity [Member] | Nonperforming Financing Receivable [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	857,000
Home Equity [Member] | Nonperforming Financing Receivable [Member] | Home Equity [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	1,795,000
Home Equity [Member] | Pass [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	616,758,000
Home Equity [Member] | Pass [Member] | Home Equity [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	577,539,000
Home Equity [Member] | Substandard [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	11,231,000
Home Equity [Member] | Substandard [Member] | Home Equity [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	10,418,000
Home Equity [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	668,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	367,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	15,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	1,000
Home Equity [Member] | With No Related Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	744,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,176,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	1,795,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	1,600,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	7,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	9,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	1,795,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	857,000
Home Equity [Member] | Financing Receivables30 To59 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	2,589,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	2,771,000
Home Equity [Member] | Financing Receivables Equal To Greater Than90 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	1,896,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	2,959,000
Home Equity [Member] | Financing Receivables60 To89 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	268,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	670,000
Home Equity [Member] | Including Accruing Troubled Debt Restructurings [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,418,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	3,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	1,825,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	22,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	1,815,000
Home Equity [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	674,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	3,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	30,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	15,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	20,000
Home Equity [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	744,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	1,795,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	7,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	1,795,000
Commercial Real Estate Financing Receivable [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	11,526,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	14,259,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	1,110,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	2,481,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	20,064,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	12,296,000
Non Impaired Financing Receivable Related Allowance	us-gaap_LoansAndLeasesReceivableOtherAllowance	24,398,000
Non Impaired Financing Receivable Related Allowance	us-gaap_LoansAndLeasesReceivableOtherAllowance	22,364,000
Non-accrual loans and leases	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus	21,741,000
Non-accrual loans and leases	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus	13,402,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	9,313,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	12,456,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	2,178,735,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	2,225,263,000
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	2,188,048,000
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	2,237,719,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	us-gaap_OtherRealEstateAndForeclosedAssets	678,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	us-gaap_OtherRealEstateAndForeclosedAssets	1,128,000
Recoveries	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery	1,656,000
Recoveries	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery	2,411,000
Financing Receivable, Allowance for Credit Losses, Write-downs	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs	3,723,000
Financing Receivable, Allowance for Credit Losses, Write-downs	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs	1,129,000
Provision for credit losses	us-gaap_ProvisionForLoanLeaseAndOtherLosses	4,013,000
Provision for credit losses	us-gaap_ProvisionForLoanLeaseAndOtherLosses	(1,945,000)
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	246,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	297,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	23,562,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	25,508,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	24,845,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	17,781,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	12,296,000
Commercial Real Estate Financing Receivable [Member] | Nonperforming Financing Receivable [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	12,296,000
Commercial Real Estate Financing Receivable [Member] | Pass [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	2,179,318,000
Commercial Real Estate Financing Receivable [Member] | Special Mention [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	634,000
Commercial Real Estate Financing Receivable [Member] | Substandard [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	45,471,000
Commercial Real Estate Financing Receivable [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	3,582,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	9,868,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	1,110,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	2,481,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	13,185,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	9,650,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	44,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	203,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	12,764,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	9,650,000
Commercial Real Estate Financing Receivable [Member] | With No Related Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	7,944,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	4,391,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	6,879,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	2,646,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	202,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	94,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	5,017,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	2,646,000
Commercial Real Estate Financing Receivable [Member] | Financing Receivables30 To59 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	2,840,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	312,000
Commercial Real Estate Financing Receivable [Member] | Financing Receivables Equal To Greater Than90 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	6,286,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	11,211,000
Commercial Real Estate Financing Receivable [Member] | Financing Receivables60 To89 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	187,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	933,000
Commercial Real Estate Financing Receivable [Member] | Including Accruing Troubled Debt Restructurings [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	15,746,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	1,217,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	21,129,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	389,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	18,633,000
Commercial Real Estate Financing Receivable [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	7,802,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	1,217,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	14,250,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	187,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	13,616,000
Commercial Real Estate Financing Receivable [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	7,944,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	6,879,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	202,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	5,017,000
Commercial Portfolio Segment [Member] | Commercial Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	1,747,774,000
Commercial Portfolio Segment [Member] | Doubtful [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	100,000
Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	8,314,000
Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member] | Commercial Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	7,127,000
Commercial Portfolio Segment [Member] | Pass [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	1,562,263,000
Commercial Portfolio Segment [Member] | Pass [Member] | Commercial Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	1,721,118,000
Commercial Portfolio Segment [Member] | Substandard [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	41,618,000
Commercial Portfolio Segment [Member] | Substandard [Member] | Commercial Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	19,529,000
Commercial Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | Commercial Portfolio Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	10,439,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	1,938,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	24,280,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	232,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	18,623,000
Commercial Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Commercial Portfolio Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	4,045,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	1,938,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	12,424,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	160,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	12,401,000
Commercial Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Commercial Portfolio Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	6,394,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	11,856,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	72,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	6,222,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	14,957,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	103,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	14,926,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	479,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	13,258,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | Commercial Real Estate Portfolio Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	6,930,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	47,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	6,176,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	39,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	6,176,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | Home Equity [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,553,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	1,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	1,613,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	10,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	860,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | Commercial Real Estate Financing Receivable [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	17,279,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	2,532,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	19,046,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	430,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	18,833,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | Agricultural Real Estate Financing Receivable [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	864,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	1,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	995,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	12,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	937,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | Residential Portfolio Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	4,092,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	300,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	5,039,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	77,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	4,108,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	4,643,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	103,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	5,406,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	124,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	4,937,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Commercial Real Estate Portfolio Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,551,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	47,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	1,373,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	35,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	1,373,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Home Equity [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	377,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	1,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	13,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	1,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	3,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Commercial Real Estate Financing Receivable [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	12,888,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	2,532,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	16,400,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	336,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	16,187,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Agricultural Real Estate Financing Receivable [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	424,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	1,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	76,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	4,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	76,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Residential Portfolio Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	2,241,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	300,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	2,734,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	55,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	2,453,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Commercial And Industrial Owner Occupied Real Estate Financing Receivable [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	10,314,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	9,520,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	355,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	8,321,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Commercial Real Estate Portfolio Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	5,379,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	4,803,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	4,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	4,803,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Home Equity [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,176,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	1,600,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	9,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	857,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Commercial Real Estate Financing Receivable [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	4,391,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	2,646,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	94,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	2,646,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Agricultural Real Estate Financing Receivable [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	440,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	919,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	8,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	861,000
Real Estate Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Residential Portfolio Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,851,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	2,305,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	22,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	1,655,000
Agricultural Real Estate Financing Receivable [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	189,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	792,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	159,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	930,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	919,000
Non Impaired Financing Receivable Related Allowance	us-gaap_LoansAndLeasesReceivableOtherAllowance	2,365,000
Non Impaired Financing Receivable Related Allowance	us-gaap_LoansAndLeasesReceivableOtherAllowance	2,172,000
Non-accrual loans and leases	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus	921,000
Non-accrual loans and leases	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus	1,546,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	315,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	1,570,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	259,045,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	243,807,000
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	259,360,000
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	245,377,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	us-gaap_OtherRealEstateAndForeclosedAssets	25,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	us-gaap_OtherRealEstateAndForeclosedAssets	22,000
Recoveries	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery	384,000
Recoveries	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery	175,000
Financing Receivable, Allowance for Credit Losses, Write-downs	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs	33,000
Financing Receivable, Allowance for Credit Losses, Write-downs	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs	110,000
Provision for credit losses	us-gaap_ProvisionForLoanLeaseAndOtherLosses	(1,247,000)
Provision for credit losses	us-gaap_ProvisionForLoanLeaseAndOtherLosses	(417,000)
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	6,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	8,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	3,420,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	2,524,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	2,172,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	872,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	861,000
Agricultural Real Estate Financing Receivable [Member] | Nonperforming Financing Receivable [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	861,000
Agricultural Real Estate Financing Receivable [Member] | Pass [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	233,939,000
Agricultural Real Estate Financing Receivable [Member] | Substandard [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	10,577,000
Agricultural Real Estate Financing Receivable [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	47,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	352,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	159,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	550,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	550,000
Agricultural Real Estate Financing Receivable [Member] | With No Related Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	142,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	440,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	380,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	919,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	6,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	8,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	322,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	861,000
Agricultural Real Estate Financing Receivable [Member] | Financing Receivables30 To59 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	176,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	969,000
Agricultural Real Estate Financing Receivable [Member] | Financing Receivables Equal To Greater Than90 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	247,000
Agricultural Real Estate Financing Receivable [Member] | Financing Receivables60 To89 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	139,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	354,000
Agricultural Real Estate Financing Receivable [Member] | Including Accruing Troubled Debt Restructurings [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	198,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	162,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	966,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	6,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	908,000
Agricultural Real Estate Financing Receivable [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	56,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	162,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	586,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	586,000
Agricultural Real Estate Financing Receivable [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	142,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	380,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	6,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	322,000
Residential Portfolio Segment [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	3,947,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	2,282,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	4,545,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	2,305,000
Non Impaired Financing Receivable Related Allowance	us-gaap_LoansAndLeasesReceivableOtherAllowance	33,198,000
Non Impaired Financing Receivable Related Allowance	us-gaap_LoansAndLeasesReceivableOtherAllowance	30,386,000
Non-accrual loans and leases	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus	21,637,000
Non-accrual loans and leases	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus	21,084,000
Loans and leases 90 days or more past due, still accruing	us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	1,655,000
Loans and leases 90 days or more past due, still accruing	us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	3,439,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	32,123,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	34,232,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	2,440,079,000
Current	us-gaap_FinancingReceivableRecordedInvestmentCurrent	2,609,734,000
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	2,472,202,000
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	2,643,966,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	us-gaap_OtherRealEstateAndForeclosedAssets	2,477,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	us-gaap_OtherRealEstateAndForeclosedAssets	857,000
Recoveries	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery	2,693,000
Recoveries	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery	1,694,000
Financing Receivable, Allowance for Credit Losses, Write-downs	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs	3,995,000
Financing Receivable, Allowance for Credit Losses, Write-downs	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs	2,687,000
Provision for credit losses	us-gaap_ProvisionForLoanLeaseAndOtherLosses	(5,515,000)
Provision for credit losses	us-gaap_ProvisionForLoanLeaseAndOtherLosses	(1,819,000)
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	85,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	22,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	40,015,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	33,198,000
Total allowance	us-gaap_FinancingReceivableAllowanceForCreditLosses	30,386,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	3,990,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	1,655,000
Residential Portfolio Segment [Member] | Residential Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	2,472,202,000
Residential Portfolio Segment [Member] | Doubtful [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	282,000
Residential Portfolio Segment [Member] | Doubtful [Member] | Residential Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	363,000
Residential Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	1,655,000
Residential Portfolio Segment [Member] | Nonperforming Financing Receivable [Member] | Residential Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	3,990,000
Residential Portfolio Segment [Member] | Pass [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	2,579,905,000
Residential Portfolio Segment [Member] | Pass [Member] | Residential Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	2,399,081,000
Residential Portfolio Segment [Member] | Special Mention [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	522,000
Residential Portfolio Segment [Member] | Substandard [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	61,602,000
Residential Portfolio Segment [Member] | Substandard [Member] | Residential Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome	68,768,000
Residential Portfolio Segment [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	368,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	431,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	9,000
Residential Portfolio Segment [Member] | With No Related Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	3,579,000
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	1,851,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	4,545,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	2,305,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	76,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	22,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	3,990,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	1,655,000
Residential Portfolio Segment [Member] | Financing Receivables30 To59 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	13,827,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	12,393,000
Residential Portfolio Segment [Member] | Financing Receivables Equal To Greater Than90 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	13,604,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	15,054,000
Residential Portfolio Segment [Member] | Financing Receivables60 To89 Days Past Due [Member] | Real Estate Segment [Member]
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	4,692,000
Financing Receivable, Recorded Investment, Past Due	us-gaap_FinancingReceivableRecordedInvestmentPastDue	6,785,000
Residential Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	5,635,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	226,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	6,441,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	151,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	5,777,000
Residential Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	2,056,000
Allowance for impaired loans and leases	us-gaap_ImpairedFinancingReceivableRelatedAllowance	226,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	1,896,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	75,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	1,787,000
Residential Portfolio Segment [Member] | Including Accruing Troubled Debt Restructurings [Member] | With No Related Allowance [Member] | Real Estate Segment [Member]
Average Recorded Investment	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment	3,579,000
Unpaid Balance of Impaired Loans	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance	4,545,000
Interest Income Recognized	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod	76,000
Recorded balance of impaired loans	us-gaap_ImpairedFinancingReceivableRecordedInvestment	$ 3,990,000