Fair Value Disclosures [Abstract]
Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Summary of Assets Measured at Fair Value on Non Recurring Basis
Fair Value Measurements, Nonrecurring [Table Text Block]
Valuation Methodology and Unobservable Inputs for Level Three Assets Measured at Fair Value on Non Recurring Basis
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]
Carrying Amounts and Estimated Fair Value for Financial Instrument Assets and Liabilities
Fair Value, by Balance Sheet Grouping [Table Text Block]
Investments, Debt and Equity Securities [Abstract]
Available-for-sale, Amortized Cost
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due in one year or less
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis
Due after one year through five years
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis
Due after five years through ten years
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis
Due after ten years
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis
Amortized cost, total
Available-for-sale Debt Securities, Amortized Cost Basis
Available-for-sale, Fair Value
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due in one year or less
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value
Due after one year through five years
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value
Due after five years through ten years
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value
Due after ten years
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value
Fair value, total
Available-for-sale Securities, Debt Securities
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Due in one year or less
Held-to-maturity Securities, Debt Maturities, within One Year, Net Carrying Amount
Due after one year through five years
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount
Due after five years through ten years
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount
Due after ten years
Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount
Amortized Cost
Held-to-maturity Securities
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Fair Value [Abstract]
Due in one year or less
Held-to-maturity Securities, Debt Maturities, Next Twelve Months, Fair Value
Due after one year through five years
Held-to-maturity Securities, Debt Maturities, Year Two Through Five, Fair Value
Due after five years through ten years
Held-to-maturity Securities, Debt Maturities, Year Six Through Ten, Fair Value
Due after ten years
Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value
Held-to-maturity Securities, Fair Value
Held-to-maturity Securities, Fair Value
Statement of Comprehensive Income [Abstract]
Net Income
Net Income (Loss) Attributable to Parent
Other comprehensive (loss) income:
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net change in unrealized losses on available-for-sale securities:
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract]
Net change in unrealized losses on available-for-sale securities, net of tax of $816, ($1,173), $3,482 and ($926), respectively
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax
Net reclassification adjustment for net gains included in net income, net of tax of $7, $0, $7 and $0, respectively(1)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax
Net change in unrealized losses on available-for-sale securities, net of tax
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Net change in unrealized losses on cash flow hedging derivatives, net of tax of ($123), $249, ($430) and $200, respectively
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax
Net reclassification adjustment for effective portion of cash flow hedges, net of tax of ($44), ($145), ($105) and ($304), respectively(2)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax
Net change in unrealized losses on cash flow hedging derivatives, net of tax
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax
Reclassification of amortization of net unrecognized actuarial loss and prior service cost, net of tax of ($32), ($23), ($63) and ($46), respectively(3)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax
Other comprehensive (loss) income
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
FAIR VALUE MEASUREMENT AND DISCLOSURE
Fair Value Disclosures [Text Block]
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements or Change in Accounting Principle [Table]
New Accounting Pronouncements or Change in Accounting Principle [Table]
Adjustments for New Accounting Pronouncements [Axis]
Adjustments for New Accounting Pronouncements [Axis]
Type of Adoption [Domain]
Type of Adoption [Domain]
Accounting Standards Update 2016-01
Accounting Standards Update 2016-01 [Member]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
AOCI
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Retained Earnings
Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash rewards paid
Interest Expense, Cash Rewards, Deposits
Interest Expense, Cash Rewards, Deposits
Equity investments gain (loss)
Trading Securities, Change in Unrealized Holding Gain (Loss)
Cumulative effect adjustment
Cumulative Effect of New Accounting Principle in Period of Adoption
Regulatory Capital Requirements [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table]
Subordinated Borrowing [Axis]
Subordinated Borrowing [Axis]
Subordinated Borrowing, Name [Domain]
Subordinated Borrowing, Name [Domain]
Tier II Capital [Domain]
Tier II Capital [Domain]
Tier II Capital [Domain]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Minimum
Minimum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital Required for Capital Adequacy to Risk Weighted Assets
Capital Required for Capital Adequacy to Risk Weighted Assets
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets
Tier One Leverage Capital Required for Capital Adequacy to Average Assets
Tier One Leverage Capital Required for Capital Adequacy to Average Assets
Capital Conservation Buffer
Capital Conservation Buffer
Capital Conservation Buffer
Value Of Trust Preferred Securities Included In Tier One Capital
Value Of Trust Preferred Securities Included In Tier One Capital
Value of trust preferred securities included in Tier I Capital.
Subordinated Debt
Subordinated Debt
Consolidated Entities [Axis]
Consolidated Entities [Axis]
Consolidated Entities [Domain]
Consolidated Entities [Domain]
Subsidiaries
Subsidiaries [Member]
Subordinated debentures
Capital
Capital
Capital to Risk Weighted Assets
Capital to Risk Weighted Assets
Capital Required for Capital Adequacy to Risk Weighted Assets
Tier One Risk Based Capital
Tier One Risk Based Capital
Capital Required to be Well Capitalized to Risk Weighted Assets
Capital Required to be Well Capitalized to Risk Weighted Assets
Tier One Risk Based Capital to Risk Weighted Assets
Tier One Risk Based Capital to Risk Weighted Assets
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets
Common equity tier I capital
Common equity tier I capital
Common equity tier I capital
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets
Common Equity Tier I Risk Based Capital Ratio
Common Equity Tier I Risk Based Capital Ratio
Common Equity Tier I To Total Risk Weighted Assets Capital Ratio
Tier One Leverage Capital
Tier One Leverage Capital
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets
Excess Tier One Leverage Capital to Average Assets
Excess Tier One Leverage Capital to Average Assets
Tier One Leverage Capital Required for Capital Adequacy to Average Assets
Tier One Leverage Capital Required to be Well Capitalized to Average Assets
Tier One Leverage Capital Required to be Well Capitalized to Average Assets
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]
Loans and Leases Receivable Disclosure [Abstract]
Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table]
Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table]
Portfolio Segment [Axis]
Class of Financing Receivable, Type [Axis]
Financing Receivable Allowance [Domain]
Class of Financing Receivable, Type [Domain]
Residential Real Estate
Residential Portfolio Segment [Member]
Commercial Real Estate
Commercial Real Estate Portfolio Segment [Member]
Commercial
Commercial Portfolio Segment [Member]
Home Equity
Home Equity Portfolio Segment [Member]
Home Equity Portfolio Segment [Member]
Consumer
Consumer Portfolio Segment [Member]
HPFC Portfolio Segment
HPFC Portfolio Segment [Member]
HPFC Portfolio Segment [Member]
Internal Credit Assessment [Axis]
Internal Credit Assessment [Axis]
Internal Credit Assessment [Domain]
Internal Credit Assessment [Domain]
Pass (Grades 1-6)
Pass [Member]
Performing
Performing Financial Instruments [Member]
Special Mention (Grade 7)
Special Mention [Member]
Substandard (Grade 8)
Substandard [Member]
Non-performing
Nonperforming Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment [Line Items]
Loans
Loans and Leases Receivable, Net of Deferred Income
Income Statement [Abstract]
Interest Income
Interest and Dividend Income, Operating [Abstract]
Interest and fees on loans
Interest and Fee Income, Loans and Leases
Interest on U.S. government and sponsored enterprise obligations (taxable)
Interest Income, Securities, US Treasury and Other US Government
Interest on state and political subdivision obligations (nontaxable)
Interest Income, Securities, State and Municipal
Interest on deposits in other banks and other investments
Interest Income Federal Funds Sold And Other Short Term Investments
Interest income on federal funds sold. Federal funds sold represent the excess federal funds held by one commercial bank which it lends to another commercial bank, usually at an agreed-upon (federal funds) rate of interest. Such loans are made for legal reserve requirement purposes of the borrowing bank and generally are of short-duration (overnight). Also include interest income on other investments not otherwise specified in the taxonomy that will be realized in a short period of time, usually less than one year or the normal operating cycle, whichever is longer.
Total interest income
Interest and Dividend Income, Operating
Interest Expense
Interest Expense [Abstract]
Interest on deposits
Interest Expense, Deposits
Interest on borrowings
Interest Expense, Borrowings
Interest on subordinated debentures
Interest Expense, Junior Subordinated Debentures
Total interest expense
Interest Expense
Net interest income
Interest Income (Expense), Net
Provision for credit losses
Provision for Loan, Lease, and Other Losses
Net interest income after provision for credit losses
Interest Income (Expense), after Provision for Loan Loss
Non-Interest Income
Noninterest Income [Abstract]
Debit card income
Fees and Commissions, Debit Cards
Service charges on deposit accounts
Fees and Commissions, Depositor Accounts
Mortgage banking income, net
Bank Servicing Fees
Income from fiduciary services
Fees and Commissions, Fiduciary and Trust Activities
Bank-owned life insurance
Brokerage Fees And Insurance Income
Brokerage Fees and Insurance Income.
Bank-owned life insurance
Bank Owned Life Insurance Income
Other service charges and fees
Fees and Commissions, Other
Net gain on sale of securities
Gain (Loss) on Investments
Other income
Noninterest Income, Other Operating Income
Total non-interest income
Noninterest Income
Non-Interest Expense
Noninterest Expense [Abstract]
Salaries and employee benefits
Labor and Related Expense
Furniture, equipment and data processing
Equipment And Software Expense
This element represents furniture and equipment expense including depreciation, repairs, rentals, and service contract costs. This item also includes equipment purchases which do not qualify for capitalization in accordance with accounting policy. In addition, this item includes the amount charged to expense for amortization of capitalized computer software costs as well as amounts incurred for software development activities that were not capitalized.
Net occupancy costs
Occupancy, Net
Consulting and professional fees
Professional Fees
Debit card expense
Debit Card Expense
Debit Card Expense
Regulatory assessments
Regulatory Assessments
Regulatory assessments.
Amortization of intangible assets
Amortization of Intangible Assets
Other real estate owned and collection costs, net
Foreclosed Real Estate Expense
Other expenses
Other Noninterest Expense
Total non-interest expense
Noninterest Expense
Income before income tax expense
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Income tax expense
Income Tax Expense (Benefit)
Net Income
Per Share Data
Earnings Per Share [Abstract]
Basic earnings per share
Earnings Per Share, Basic
Diluted earnings per share
Earnings Per Share, Diluted
Weighted average number of common shares outstanding
Weighted Average Number of Shares Outstanding, Basic
Diluted weighted average number of common shares outstanding
Weighted Average Number of Shares Outstanding, Diluted
Cash dividends declared per share
Common Stock, Dividends, Per Share, Declared
Statement of Stockholders' Equity [Abstract]
Statement [Table]
Statement [Table]
Common Stock
Common Stock [Member]
Retained Earnings
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent [Member]
Statement [Line Items]
Statement [Line Items]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)
Shares, Outstanding
Beginning Balance
Stockholders' Equity Attributable to Parent
Cumulative-effect adjustment (Note 2)
Other comprehensive income, net of tax
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Stock-based compensation expense
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings and tax benefit (shares)
Stock Issued During Period Shares Stock Options Exercised And Issuance Of Restricted Shares
Stock Issued During Period, Shares, Stock Options Exercised and Issuance of Restricted Shares
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings
Stock Issued During Period Value Stock Options Exercised And Issuance Of Restricted Shares
Stock Issued During Period, Value, Stock Options Exercised And Issuance Of Restricted Shares
Cash dividends declared ($0.46 and $0.55 per share
Dividends, Common Stock, Cash
Ending Balance (in shares)
Ending Balance
Retirement Benefits [Abstract]
EMPLOYEE BENEFIT PLANS
Pension and Other Postretirement Benefits Disclosure [Text Block]
Proceeds from sales of investments
Proceeds from Sale of Available-for-sale Securities
Gross realized gains
Available-for-sale Securities, Gross Realized Gains
Commitments and Contingencies Disclosure [Abstract]
Derivative [Table]
Derivative [Table]
Derivative Instrument [Axis]
Derivative Instrument [Axis]
Derivative Contract Type [Domain]
Derivative Contract [Domain]
Interest rate swaps
Interest Rate Swap [Member]
Forward-Starting Interest Rate Swap
Forward-Starting Interest Rate Swap [Member]
Forward-Starting Interest Rate Swap [Member]
Derivatives, by Derivative Instrument Contract [Axis]
Derivatives By Derivative Instrument Contract [Axis]
Derivatives, by Derivative Instrument Contract [Axis]
Derivatives, by Derivative Instrument Contract [Domain]
Derivatives By Derivative Instrument Contract [Domain]
Derivatives, by Derivative Instrument Contract [Domain]
Contract, One
Contract One [Member]
Contract, One [Member]
Contract, Two
Contract Two [Member]
Contract, Two [Member]
Contract, Three
Contract Three [Member]
Contract, Three [Member]
Contract, Four
Contract Four [Member]
Contract, Four [Member]
Contract, Five
Contract Five [Member]
Contract, Five [Member]
Derivative [Line Items]
Derivative [Line Items]
Notional Amount
Derivative, Notional Amount
Trade Date
Derivative, Inception Date
Maturity Date
Derivative, Maturity Date
Variable Index Received
Federal Home Loan Bank, Advances, Maturity Period, Variable Rate
Fixed Rate Paid
Derivative, Fixed Interest Rate
Derivative, fair value
Derivative, Fair Value, Net
Loss on Cash Flow Hedge Ineffectiveness
Loss on Cash Flow Hedge Ineffectiveness
Equity securities - bank stock, Amortized Cost
Equity Securities, FV-NI Cost
Equity Securities, FV-NI Cost
Equity securities - bank stock, Unrealized Gains
Equity Securities, FV-NI, Unrealized Gain
Equity Securities, FV-NI, Unrealized Gain
Equity securities - bank stock, Unrealized Losses
Equity Securities, FV-NI, Unrealized Loss
Equity Securities, FV-NI, Unrealized Loss
Equity securities - bank stock, Fair Value
Equity Securities, FV-NI
Equity Securities, FV-NI
FHLBB (carried at cost)
Federal Home Loan Bank Stock
FRB (carried at cost)
Federal Reserve Bank Stock
Other Investments, Amortized Cost
Other Investments, Amortized Cost
Other Investments, Amortized Cost
Other Investments, Unrealized Gain
Other Investments, Unrealized Gain
Other Investments, Unrealized Gain
Other Investments, Unrealized Loss
Other Investments, Unrealized Loss
Other Investments, Unrealized Loss
Other Investments, Fair Value
Other Investments
Summary of Amortized Costs and Estimated Fair Values of Available-For-Sale Securities
Unrealized Gain (Loss) on Investments [Table Text Block]
Unrealized Gross Losses and Estimated Fair Values of Investment Securities by Length of Time that Individual Securities in Each Category in Continuous Loss Position
Schedule of Unrealized Loss on Investments [Table Text Block]
Schedule of Sale of AFS Investments
Gain (Loss) on Investments [Table Text Block]
Amortized Cost and Estimated Fair Values of Debt Securities by Contractual Maturity
Investments Classified by Contractual Maturity Date [Table Text Block]
Statement of Financial Position [Abstract]
Held-to-maturity Securities, Fair Value
Common stock, no par value (dollars per share)
Common Stock, No Par Value
Common stock, authorized (in shares)
Common Stock, Shares Authorized
Common stock, issued (in shares)
Common Stock, Shares, Issued
Common stock, outstanding (in shares)
Common Stock, Shares, Outstanding
Schedule of Financing Receivable, Troubled Debt Restructurings [Table]
Schedule of Financing Receivable, Troubled Debt Restructurings [Table]
Financing Receivable Portfolio Segment [Axis]
Financing Receivable Portfolio Segment [Axis]
Financing Receivable Portfolio Segment [Domain]
Financing Receivable Portfolio Segment [Domain]
Home Equity Loan
Home Equity Loan [Member]
Residential Real Estate
Residential Real Estate [Member]
Loan Restructuring Modification [Axis]
Loan Restructuring Modification [Axis]
Loan Restructuring Modification [Domain]
Loan Restructuring Modification [Domain]
Extended Maturity
Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications [Line Items]
Number of Contracts
Financing Receivable, Modifications, Number of Contracts
Pre-Modification Outstanding Recorded Investment
Financing Receivable, Modifications, Pre-Modification Recorded Investment
Post-Modification Outstanding Recorded Investment
Financing Receivable, Modifications, Post-Modification Recorded Investment
Specific Reserve
Allowance Related to Troubled Debt Restructurings assigned during period
Allowance Related to Troubled Debt Restructuring assigned during period
Debt Disclosure [Abstract]
BORROWINGS
Debt Disclosure [Text Block]
Net income
Dividends and undistributed earnings allocated to participating securities
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic
Net income available to common shareholders
Net Income (Loss) Available to Common Stockholders, Basic
Weighted-average common shares outstanding for basic EPS
Dilutive effect of stock-based awards (shares)
Weighted Average Number Diluted Shares Outstanding Adjustment
Weighted-average common and potential common shares for diluted EPS (shares)
Basic EPS (in dollars per share)
Diluted EPS (in dollars per share)
Antidilutive Stock options (shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Schedule of Investments [Table]
Schedule of Investments [Table]
Major Types of Debt and Equity Securities [Axis]
Major Types of Debt and Equity Securities [Axis]
Major Types of Debt and Equity Securities [Domain]
Major Types of Debt and Equity Securities [Domain]
Residential Mortgage Backed Securities
Residential Mortgage Backed Securities [Member]
Collateralized Mortgage Backed Securities
Collateralized Mortgage Backed Securities [Member]
Mortgage Backed Securities and Collateralized Mortgage Obligations
Mortgage Backed Securities and Collateralized Mortgage Obligations [Member]
Mortgage Backed Securities and Collateralized Mortgage Obligations [Member]
Collateralized Mortgage Obligations
Collateralized Mortgage Obligations [Member]
Schedule of Investments [Line Items]
Schedule of Investments [Line Items]
Net unrealized gains (losses) on available-for-sale securities, net of tax
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax
Deferred tax assets, unrealized losses on available for sale securities
Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross
Payments to acquire investments
Payments to Acquire Investments
AFS securities in unrealized loss positions, number of positions
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions
AFS and HTM securities in Continuous Unrealized Loss Position
AFS and HTM securities in Continues Unrealized Loss Position
AFS and HTM securities in Continues Unrealized Loss Position
AFS and HTM Securities Unrealized Loss Accumulated in Investments
AFS and HTM Securities Unrealized Loss Accumulated in Investments
AFS and HTM Securities Unrealized Loss Accumulated in Investments
Fair Value - 12 Months of More
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
Unrealized Loss as a Percent of Fair Value
Unrealized Loss as a Percent of Fair Value
Unrealized Loss as a Percent of Fair Value
Investment securities sold, carrying amount
Investment Securities Sold, Carrying Amount
Investment Securities Sold, Carrying Amount
Security pledged as collateral, amortized cost
Security Owned And Pledged As Collateral Amortized Cost
Security Owned and Pledged as Collateral, Amortized Cost
Security pledged as collateral, fair value
Security Owned and Pledged as Collateral, Fair Value
Unrealized loss, change in fair value of bank stock equity securities
Marketable Securities, Unrealized Gain (Loss)
Gain on sale of other investment
Gain (Loss) on Sale of Other Investments, Miscellaneous
Gain (Loss) on Sale of Other Investments, Miscellaneous
INVESTMENTS
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Obligations of states and political subdivisions
US States and Political Subdivisions Debt Securities [Member]
Subordinated corporate bonds
Corporate Debt Securities [Member]
Equity investments
Equity Securities [Member]
Total AFS investments
Debt Securities [Member]
AFS Investments (carried at fair value):
Available-for-sale Securities [Abstract]
Amortized Cost
Available-for-sale Securities, Amortized Cost Basis
Unrealized Gains
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax
Unrealized Losses
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax
Available-for-sale securities, at fair value
Available-for-sale Securities
HTM Investments (carried at amortized cost):
Held-to-maturity Securities [Abstract]
Unrealized Gains
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain
Unrealized Losses
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss
Fair Value
Summary of Contractual and Notional Amounts of Financial Instruments
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]
Summary of Derivative Financial Instruments
Schedule of Derivative Instruments [Table Text Block]
Forward Delivery Commitments
Other Commitments [Table Text Block]
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss)
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]
Net reclassification adjustment for effective portion of cash flow hedges included in interest expense, gross
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net
Banking and Thrift [Abstract]
Schedule of Assets Sold under Agreements to Repurchase [Table]
Schedule of Assets Sold under Agreements to Repurchase [Table]
Counterparty Name [Axis]
Counterparty Name [Axis]
Counterparty Name [Domain]
Counterparty Name [Domain]
Retail Customers
Retail [Member]
Retail Member
Repurchase Agreements and Similar Transactions, Maturity Periods [Axis]
Repurchase Agreements and Similar Transactions, Maturity Periods [Axis]
Repurchase Agreements and Similar Transactions, Maturity Periods [Domain]
Repurchase Agreements and Similar Transactions, Maturity Periods [Domain]
Overnight and Continuous
Maturity Overnight [Member]
Up to 30 Days
Maturity Less than 30 Days [Member]
30 - 90 Days
Maturity 30 to 90 Days [Member]
Greater than 90 Days
Maturity Greater than 90 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase [Line Items]
Certificates of Deposit, at Carrying Value
Certificates of Deposit, at Carrying Value
Repurchase Agreements
Securities Sold under Agreements to Repurchase
Analysis of Basic and Diluted Earnings Per Share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Schedule of Available-for-sale Securities [Table]
Schedule of Available-for-sale Securities [Table]
Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises
Schedule of Available-for-sale Securities [Line Items]
Schedule of Available-for-sale Securities [Line Items]
Fair Value - Less Than 12 Months
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
Unrealized Losses - Less Than 12 Months
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
Unrealized Losses - 12 Months or More
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Unrealized losses
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss
Composition of Loan Portfolio, Excluding Residential Loans Held for Sale
Loan Portfolio [Table Text Block]
Loan Portfolio
Schedule of Loan Balances by Portfolio Segment
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Summary of Activity in Allowance for Loan Losses
Allowance for Credit Losses on Financing Receivables [Table Text Block]
Schedule of Provision for Credit Losses
Schedule of Provision for Credit Losses [Table Text Block]
[Table Text Block] for Schedule of Provision for Credit Losses [Table]
Credit Risk Exposure Indicators by Portfolio Segment
Financing Receivable Credit Quality Indicators [Table Text Block]
Loan Aging Analysis by Portfolio Segment
Past Due Financing Receivables [Table Text Block]
Troubled Debt Restructuring and Specific Reserve Related to TDRs
Troubled Debt Restructuring and Specific Reserve Related to TDRs [Table Text Block]
[Table Text Block] for Troubled Debt Restructuring and Specific Reserve Related to TDRs [Table]
Schedule of Loan Modifications
Troubled Debt Restructurings on Financing Receivables [Table Text Block]
Summary of Impaired Loan Balances and Associated Allowance by Portfolio Segment
Impaired Financing Receivables [Table Text Block]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Table]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Table]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Table]
Asset Class [Axis]
Asset Class [Axis]
Asset Class [Domain]
Asset Class [Domain]
Collateral-dependent impaired loans
Impaired Loans collateral dependent [Member]
Impaired Loans collateral dependent [Member]
Other real estate owned
Other Real Estate Owned [Member]
Other Real Estate Owned
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurements, Nonrecurring
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Hierarchy [Axis]
Fair Value, Hierarchy [Axis]
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Fair Value Hierarchy [Domain]
Readily Available Market Prices (Level 1)
Fair Value, Inputs, Level 1 [Member]
Observable Market Data (Level 2)
Fair Value, Inputs, Level 2 [Member]
Company Determined Fair Value (Level 3)
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Fair Value
Assets, Fair Value Disclosure
Cash dividends declared, per share
Balance Sheet Location [Axis]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Balance Sheet Location [Domain]
Other Liabilities [Member]
Other Liabilities [Member]
Receivable Type [Axis]
Receivable Type [Axis]
Receivable [Domain]
Receivable [Domain]
Loans [Member]
Loans [Member]
Industry Sector [Axis]
Industry Sector [Axis]
Industry Sector [Domain]
Industry Sector [Domain]
Commercial and Industrial Sector [Member]
Commercial and Industrial Sector [Member]
Derivative Contract [Domain]
Variable Rate [Axis]
Variable Rate [Axis]
Variable Rate [Domain]
Variable Rate [Domain]
Federal home loan bank 30-day
federal home loan bank 30-day [Member]
federal home loan bank 30-day [Member]
Derivative, Number of Instruments Held
Derivative, Number of Instruments Held
Notional amount of derivative
Schedule of Financing Receivable, Allowance for Credit Losses [Table]
Schedule of Financing Receivable, Allowance for Credit Losses [Table]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses [Line Items]
Reserve for unfunded commitments
Reserve for unfunded commitments
Reserve for unfunded commitments
Activity in ALL:
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance
Financing Receivable, Allowance for Credit Losses
Loans charged off
Financing Receivable, Allowance for Credit Losses, Write-downs
Recoveries
Financing Receivable, Allowance for Credit Losses, Recovery
Provision (credit)(1)
Provision for Loan and Lease Losses
Ending balance
Ending Balance: Individually evaluated for impairment
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment
Ending Balance: Collectively evaluated for impairment
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment
Ending Balance: Individually evaluated for impairment
Financing Receivable, Individually Evaluated for Impairment
Ending Balance: Collectively evaluated for impairment
Financing Receivable, Collectively Evaluated for Impairment
Total Loans Outstanding
Financing Receivable, Troubled Debt Restructuring [Domain]
Number of Contracts
Financing Receivable Modifications Number Of Contracts Outstanding
Financing Receivable Modifications Number Of Contracts Outstanding
Recorded Investment
Financing Receivable, Modifications, Recorded Investment
Specific Reserve
Allowance For Credit Losses Related To Troubled Debt Restructured Loans
Allowance for Credit Losses, Related to Troubled Debt Restructured Loans
Financing Receivable, Modifications, Pre-Modification Recorded Investment
Financing Receivable, Modifications, Post-Modification Recorded Investment
Allowance Related to Troubled Debt Restructurings assigned during period
Components of Net Period Benefit Cost
Schedule of Net Benefit Costs [Table Text Block]
Statement of Cash Flows [Abstract]
Operating Activities
Net Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile net income to net cash provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Originations of mortgage loans held for sale
Payments for Origination of Mortgage Loans Held-for-sale
Proceeds from the sale of mortgage loans
Proceeds from Sale of Mortgage Loans Held-for-sale
Gain on sale of mortgage loans, net of origination costs
Gain (Loss) on Sale of Mortgage Loans
Depreciation and amortization expense
Depreciation, Depletion and Amortization, Nonproduction
Investment securities amortization and accretion, net
Accretion (Amortization) of Discounts and Premiums, Investments
Purchase accounting accretion, net
Purchase Accounting Accretion During Period
Purchase Accounting Accretion
Stock-based compensation expense
Share-based Compensation
Net (gain) loss on sale of premises and equipment
Gain (Loss) on Disposition of Property Plant Equipment
Net gain on sale of investment securities
Gain (Loss) on Sale of Investments
Net increase in other real estate owned valuation allowance and gain on disposition
Real Estate Owned, Valuation Allowance, Period Increase (Decrease)
(Increase) decrease in other assets
Increase (Decrease) in Other Operating Assets
Increase in other liabilities
Increase (Decrease) in Other Operating Liabilities
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Investing Activities
Net Cash Provided by (Used in) Investing Activities [Abstract]
Proceeds from maturities of held-to-maturity securities
Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities
Proceeds from the sale and maturity of available-for-sale securities
Proceeds from Sale and Maturity of Available-for-sale Securities
Purchase of available-for-sale securities
Payments to Acquire Available-for-sale Securities
Net increase in loans
Payments for (Proceeds from) Loans and Leases
Purchase of Federal Home Loan Bank stock
Payments for Federal Home Loan Bank Stock
Payments for Federal Home Loan Bank Stock
Proceeds from sale of Federal Home Loan Bank stock
Proceeds from sale of Federal Home Loan Bank and Federal Reserve Bank stock
Proceeds from sale of Federal Home Loan Bank and Federal Reserve Bank stock
Purchase of premises and equipment
Payments to Acquire Property, Plant, and Equipment
Proceeds from the sale of premises and equipment
Proceeds from Sale of Property, Plant, and Equipment
Proceeds from the liquidation of equity investment
Payments for (Proceeds from) Investments
Recoveries of previously charged-off loans
Proceeds from Recoveries of Loans Previously Charged off
Proceeds from the sale of other real estate owned
Proceeds from Sale of Foreclosed Assets
Net cash used by investing activities
Net Cash Provided by (Used in) Investing Activities
Financing Activities
Net Cash Provided by (Used in) Financing Activities [Abstract]
Net increase in deposits
Increase (Decrease) in Deposits
Net proceeds from borrowings less than 90 days
Proceeds from (Repayments of) Short-term Debt, Maturing in Three Months or Less
Repayments of wholesale repurchase agreements
Proceeds from (Repayments of) Other Debt
Exercise of stock options and issuance of restricted stock, net of repurchase for tax withholdings
Proceeds Payments From Common Stock Issued Under Stock Compensation Plans
Proceeds Payments from Common Stock Issued under Stock Compensation Plans
Cash dividends paid on common stock
Payments of Dividends
Net cash provided by financing activities
Net Cash Provided by (Used in) Financing Activities
Net increase in cash, cash equivalents and restricted cash
Cash and Cash Equivalents, Period Increase (Decrease)
Cash, cash equivalents, and restricted cash at beginning of period
Cash and Cash Equivalents, at Carrying Value
Cash, cash equivalents and restricted cash at end of period
Supplemental information
Supplemental Cash Flow Information [Abstract]
Interest paid
Interest Paid
Income taxes paid
Income Taxes Paid
Other Commitments [Table]
Other Commitments [Table]
Derivatives By Derivative Instrument Contract [Axis]
Derivatives By Derivative Instrument Contract [Domain]
Contract One [Member]
Variable Rate [Domain]
Forward Contracts [Member]
Forward Contracts [Member]
Other Commitments [Line Items]
Other Commitments [Line Items]
Loss Contingency Accrual
Loss Contingency Accrual
Derivative Instrument Payment Of Interest Rate Swaps Designated As Cash Flow Hedges
Derivative Instrument Payment Of Interest Rate Swaps Designated As Cash Flow Hedges
Derivative Instrument Payment Of Interest Rate Swaps Designated As Cash Flow Hedges
Number of interest rate swap agreements
Derivative, Number of Interest Rate Swap Agreements
Derivative, Number of Interest Rate Swap Agreements
Cash held as collateral
Restricted Cash and Cash Equivalents
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred
Unrealized Gain (Loss) on Derivatives
Unrealized Gain (Loss) on Derivatives
Receivables [Abstract]
Net Unamortized fair Value Mark (Discount) on Loans
Net Unamortized fair Value Mark (Discount) on Loans
Net Unamortized fair Value Mark (Discount) on Loans
Loans and Leases Receivable, Deferred Income
Loans and Leases Receivable, Deferred Income
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums
Schedule of Borrowed Funds Outstanding
Schedule of Debt [Table Text Block]
Document and Entity Information [Abstract]
Document and Entity Information [Abstract]
Document Type
Document Type
Amendment Flag
Amendment Flag
Document Period End Date
Document Period End Date
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Trading Symbol
Trading Symbol
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Filer Category
Entity Filer Category
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Schedule of Impaired Financing Receivable [Table]
Schedule of Impaired Financing Receivable [Table]
Class of Financing Receivable [Axis]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Impaired [Line Items]
Recorded Investment - with an allowance recorded
Impaired Financing Receivable, with Related Allowance, Recorded Investment
Unpaid Principal Balance - with an allowance recorded
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance
Related Allowance
Impaired Financing Receivable, Related Allowance
Average Recorded Investment - with an allowance recorded
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment
Interest Income Recognized - with an allowance recorded
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method
Recorded Investment - without allowance recorded
Impaired Financing Receivable, with No Related Allowance, Recorded Investment
Unpaid Principal Balance - without allowance recorded
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance
Impaired Financing Receivable With No Related Allowance Related Allowance
Impaired Financing Receivable With No Related Allowance Related Allowance
Impaired Financing Receivable, With No Related Allowance, Related Allowance
Average Recorded Investment - without allowance recorded
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment
Interest Income Recognized - without allowance recorded
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method
Impaired Financing Receivable, Recorded Investment
Impaired Financing Receivable, Recorded Investment
Impaired financing receivable, unpaid principal balance
Impaired Financing Receivable, Unpaid Principal Balance
Impaired Financing Receivable, Average Recorded Investment
Impaired Financing Receivable, Average Recorded Investment
Impaired Financing Receivable, Interest Income, Accrual Method
Impaired Financing Receivable, Interest Income, Accrual Method
LOANS AND ALLOWANCE FOR LOAN LOSSES
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
LOANS AND ALLOWANCE FOR LOAN LOSSES [Abstract]
LOANS AND ALLOWANCE FOR LOAN LOSSES [Abstract]
Change in reserve for unfunded commitments
Allowance for Loan and Lease Losses, Period Increase (Decrease)
Provision for credit losses
Schedule of Defined Benefit Plans Disclosures [Table]
Schedule of Defined Benefit Plans Disclosures [Table]
Retirement Plan Type [Axis]
Retirement Plan Type [Axis]
Retirement Plan Type [Domain]
Retirement Plan Type [Domain]
Supplemental Employee Retirement Plan [Member]
Supplemental Employee Retirement Plan [Member]
Other Postretirement Benefit Plan
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost
Defined Benefit Plan, Service Cost
Interest cost
Defined Benefit Plan, Interest Cost
Recognized net actuarial loss
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)
Amortization of prior service credit
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Net period benefit cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Other Assets [Member]
Other Assets [Member]
Interest Rate Lock Commitments
Interest Rate Lock Commitments [Member]
Derivative Asset, Fair Value, Gross Asset
Derivative Asset, Fair Value, Gross Asset
Derivative Liability, Fair Value, Gross Liability
Derivative Liability, Fair Value, Gross Liability
Derivative, Fair Value, Net
REGULATORY CAPITAL REQUIREMENTS
Regulatory Capital Requirements under Banking Regulations [Text Block]
ASSETS
Assets [Abstract]
Cash and due from banks
Cash and Due from Banks
Interest-bearing deposits in other banks
Interest-bearing Deposits in Banks and Other Financial Institutions
Cash
Cash
Investments:
Marketable Securities [Abstract]
Held-to-maturity securities, at amortized cost (fair value of $91.6 million and $94.9 million, respectively)
Other investments
Total investments
Marketable Securities
Loans held for sale, at fair value
Loans Receivable Held-for-sale, Amount
Less: allowance for loan losses
Loans and Leases Receivable, Allowance
Net loans
Loans and Leases Receivable, Net Amount
Goodwill
Goodwill
Other intangible assets
Other Intangible Assets, Net
Bank-owned life insurance
Bank Owned Life Insurance
Premises and equipment, net
Property, Plant and Equipment, Net
Deferred tax assets
Deferred Tax Assets, Net of Valuation Allowance
Other assets
Other Assets
Total assets
Assets
LIABILITIES AND SHAREHOLDERS’ EQUITY
Liabilities and Equity [Abstract]
Liabilities
Liabilities [Abstract]
Deposits:
Deposits [Abstract]
Demand
Demand Deposit Accounts
Interest checking
Interest-bearing Deposit Liabilities
Savings and money market
Savings and Money Market Deposits
Savings and Money Market Deposits
Certificates of deposit
Time Deposits
Brokered deposits
Interest-bearing Domestic Deposit, Brokered
Total deposits
Deposits
Short-term borrowings
Other Short-term Borrowings
Long-term borrowings
Other Borrowings
Accrued interest and other liabilities
Accrued Interest Payable And Other Liabilities
Accrued interest payable and other liabilities.
Total liabilities
Liabilities
Commitments and Contingencies
Commitments and Contingencies
Shareholders’ Equity
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, no par value: authorized 40,000,000 shares, issued and outstanding 15,576,249 and 15,524,704 on June 30, 2018 and December 31, 2017, respectively
Common Stock, Value, Issued
Retained earnings
Retained Earnings (Accumulated Deficit)
Accumulated other comprehensive loss:
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net unrealized losses on available-for-sale debt securities, net of tax
Net unrealized losses on cash flow hedging derivative instruments, net of tax
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax
Net unrecognized losses on postretirement plans, net of tax
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax
Total accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss), Net of Tax
Total shareholders’ equity
Total liabilities and shareholders’ equity
Liabilities and Equity
Interest Rate Lock Commitments [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]
Measurement Basis [Axis]
Measurement Basis [Axis]
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Portion at Fair Value Measurement [Member]
Portion at Fair Value Measurement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans
Loans and Leases Receivable, Gross
Net unamortized loan origination costs
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Customer Loan Swaps
Customer Loan Swaps [Member]
Customer Loan Swaps [Member]
Carrying Amount
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial assets:
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Available-for-sale Securities
Held-to-maturity securities, at amortized cost
Loans held for sale
Loans Held-for-sale, Fair Value Disclosure
Loans receivable, net of allowance
Loans Receivable, Fair Value Disclosure
Mortgage servicing rights
Servicing Asset at Fair Value, Amount
Customer loan swaps
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value
Financial liabilities:
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Time deposits
Deposits, Fair Value Disclosure
Short-term Debt, Fair Value
Short-term Debt, Fair Value
Long-term Debt, Fair Value
Long-term Debt, Fair Value
Subordinated debentures
Debt Instrument, Fair Value Disclosure
Junior subordinated debt interest rate swaps
Derivative Liability
Customer loan swaps
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value
COMMITMENTS, CONTINGENCIES AND DERIVATIVES
Commitments and Contingencies Disclosure [Text Block]
EARNINGS PER SHARE
Earnings Per Share [Text Block]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Substandard [Member]
Impaired Loans Specifically Reserved
Impaired Loans Specifically Reserved [Member]
Impaired Loans Specifically Reserved [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financing Receivable, Individually Evaluated for Impairment
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
Short-term Debt, Type [Axis]
Short-term Debt, Type [Axis]
Short-term Debt, Type [Domain]
Short-term Debt, Type [Domain]
Short-term Debt [Member]
Short-term Debt [Member]
Long-term Debt [Member]
Long-term Debt [Member]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
FHLBB advances less than 90 days
Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months
FHLBB and correspondent bank overnight borrowings
FHLBB and Correspondent Bank Overnight Borrowings
FHLBB and Correspondent Bank Overnight Borrowings
Total short-term borrowings
Short-term Debt
Long-term Federal Home Loan Bank Advances
Long-term Federal Home Loan Bank Advances
Capital lease obligation
Capital Lease Obligations, Noncurrent
Total long-term borrowings
Long-term Debt
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]
REPURCHASE AGREEMENTS
Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block]
Net change in unrealized gains on available-for-sale securities, tax effect
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax
Net change in unrealized gains (losses) on cash flow hedging derivatives, tax effect
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax
Net reclassification adjustment for effective portion of cash flow hedges included in interest expense, tax effect
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax
Reclassification of amortization of prior service cost included in net periodic cost, tax effect
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, Tax
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net
Schedule of Financing Receivables Past Due [Table]
Schedule of Financing Receivables Past Due [Table]
Commercial Portfolio Segment [Member]
Residential Portfolio Segment [Member]
Financing Receivables, Period Past Due [Axis]
Financing Receivables, Period Past Due [Axis]
Financing Receivables, Period Past Due [Domain]
Financing Receivables, Period Past Due [Domain]
30-59 Days Past Due
Financing Receivables, 30 to 59 Days Past Due [Member]
60-89 Days Past Due
Financing Receivables, 60 to 89 Days Past Due [Member]
Greater than 90 Days
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of TDRs
Total Past Due
Financing Receivable, Recorded Investment, Past Due
Current
Financing Receivable, Recorded Investment, Current
Loans 90 Days Past Due and Accruing
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Non-Accrual Loans
Financing Receivable, Recorded Investment, Nonaccrual Status
Fair Value Inputs, Assets, Quantitative Information [Table]
Fair Value Inputs, Assets, Quantitative Information [Table]
Fair Value, Inputs, Level 3 [Member]
Impaired Loans Partially Charged Off
Impaired Loans Partially Charged Off [Member]
Impaired Loans Partially Charged Off [Member]
Valuation Technique [Axis]
Valuation Technique [Axis]
Valuation Technique [Domain]
Valuation Technique [Domain]
Market Approach Valuation Technique
Market Approach Valuation Technique [Member]
Maximum
Maximum [Member]
Weighted Average
Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Management adjustment of appraisal
Fair Value Inputs, Discount Rate
Estimated selling cost
Fair Value Inputs Estimated Selling Cost
Fair Value Inputs, Estimated Selling Cost
Financial Instruments [Table]
Financial Instruments [Table]
Financial Instruments [Table]
Financial Instrument [Axis]
Financial Instrument [Axis]
Financial Instruments [Domain]
Financial Instruments [Domain]
Home Equity
Home Equity Line of Credit [Member]
Commercial and commercial real estate
Commercial And Commercial Real Estate [Member]
Commercial and Commercial Real Estate [Member]
Residential
Residential Mortgage [Member]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Long-term Debt, Type [Domain]
Letters of Credit
Letter of Credit [Member]
Concentration Risk Type [Axis]
Concentration Risk Type [Axis]
Concentration Risk Type [Domain]
Concentration Risk Type [Domain]
Other Commitments
Other Commitments [Member]
Other Commitments [Member]
Interest rate lock commitments
Mortgage Loan Commitments [Member]
Mortgage Loan Commitments [Member]
Financial Instruments [Line Items]
Financial Instruments [Line Items]
Financial Instruments [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Table]
Fair Value Assets And Liabilities Measured On Recurring Basis [Table]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Table]
Fair Value, Measurements, Recurring
Fair Value, Measurements, Recurring [Member]
Corporate Bond Securities [Member]
Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial assets:
Assets, Fair Value Disclosure [Abstract]
Customer loan swaps
Financial liabilities:
Liabilities, Fair Value Disclosure [Abstract]
Portion at Fair Value Measurement [Member]
Non-Residential Building Operators Industry Sector
Non-Residential Building Operators Industry Sector [Member]
Non-Residential Building Operators Industry Sector [Member]
Loan Concentration Risk
Loan Concentration Risk [Member]
Loan Concentration Risk [Member]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark [Domain]
Total Loan Portfolio
Total Loan Portfolio [Member]
Total Loan Portfolio [Member]
Commercial Real Estate Portfolio
Minimum
Income Statement Location [Axis]
Income Statement Location [Axis]
Income Statement Location [Domain]
Income Statement Location [Domain]
Nonoperating Income (Expense)
Nonoperating Income (Expense) [Member]
Financing Receivable, Troubled Debt Restructuring [Axis]
Fixed Rate Residential Mortgage
Fixed Rate Residential Mortgage [Member]
Other Real Estate Owned [Axis]
Other Real Estate Owned [Axis]
Other Real Estate Owned [Axis]
Other Real Estate Owned [Domain]
Other Real Estate Owned [Domain]
[Domain] for Other Real Estate Owned [Axis]
Loans
Loans Receivable [Member]
Term to maturity
term to maturity
term to maturity
Concentration risk (percentage)
Concentration Risk, Percentage
Other industry exposures
Number of Portfolio Concentration Industries
Number of Portfolio Concentration Industries
Interest lost on nonaccrual loans
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans
Loans restructured due to credit difficulties that are now performing
Financing Receivables Impaired Troubled Debt Restructuring Performing
Financing Receivables, Impaired, Troubled Debt Restructuring, Performing
Financing receivables impaired TDR non-performing
Financing Receivables Impaired Troubled Debt Restructuring Non-Performing
Financing Receivables Impaired Troubled Debt Restructuring Non-Performing
Loans modified
Financing Receivable, Modifications, Subsequent Default, Number of Contracts
Financing Receivable, Modifications, Subsequent Default, Recorded Investment
Financing Receivable, Modifications, Subsequent Default, Recorded Investment
Gain on sale of mortgage loans
Unrealized gain (loss) on loans held for sale
Unrealized gain (loss) on loans held for sale
Unrealized gain (loss) on loans held for sale
Mortgage Loans in Process of Foreclosure, Amount
Mortgage Loans in Process of Foreclosure, Amount
Financing Receivable, Allowance for Credit Losses
Number of Months
Number of Months
Number of months to resolve foreclosure
FHLB advances, general debt obligations, pledged collateral
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged
Income Tax Disclosure [Abstract]
INCOME TAXES
Income Tax Disclosure [Text Block]
Income tax expense
Income before income tax expense
Effective tax rate(1)
Effective Income Tax Rate Reconciliation, Percent
Schedule of Underlying Assets of Repurchase Agreements when Amount of Repurchase Agreements Exceeds 10 Percent of Assets
Schedule of Underlying Assets of Repurchase Agreements when Amount of Repurchase Agreements Exceeds 10 Percent of Assets [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]