75000 - Document - Document and Entity Information
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75010 - Statement - Consolidated Balance Sheets
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75020 - Statement - Consolidated Balance Sheets (Parenthetical)
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75030 - Statement - Consolidated Statements of Operations
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75040 - Statement - Consolidated Statements of Comprehensive Income
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75050 - Statement - Consolidated Statements of Comprehensive Income (Loss) (Parenthetical)
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75060 - Statement - Consolidated Statements of Changes in Capital
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75070 - Statement - Consolidated Statements of Changes in Capital (Parenthetical)
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75080 - Statement - Consolidated Statements of Cash Flows
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75090 - Statement - Consolidated Statements of Cash Flows (Parenthetical)
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75100 - Disclosure - Cybersecurity Risk Management, Strategy and Governance
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995457 - Disclosure - Summary of Significant Accounting Policies
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995467 - Disclosure - Investment Securities
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995477 - Disclosure - Loans and Allowance for Credit Losses
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995487 - Disclosure - Derivative Financial Instruments
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995497 - Disclosure - Premises and Equipment
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995507 - Disclosure - Deposits
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995517 - Disclosure - Federal Home Loan Bank Advances and Other Borrowings
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995527 - Disclosure - Subordinated Debt
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995537 - Disclosure - Income Taxes
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995547 - Disclosure - Other Commitments and Contingencies
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995557 - Disclosure - Related Parties
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995567 - Disclosure - Minimum Regulatory Capital Requirements
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995577 - Disclosure - Accumulated Other Comprehensive Loss
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995587 - Disclosure - Employee Benefit Plans
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995597 - Disclosure - Fair Value Measurements
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995607 - Disclosure - Earnings Per Share
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995617 - Disclosure - Condensed Financial Information (Parent Company Only)
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995627 - Disclosure - Summary of Significant Accounting Policies (Policies)
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995637 - Disclosure - Summary of Significant Accounting Policies (Tables)
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995647 - Disclosure - Investment Securities (Tables)
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995657 - Disclosure - Loans and Allowance for Credit Losses (Tables)
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995667 - Disclosure - Derivative Financial Instruments (Tables)
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995677 - Disclosure - Premises and Equipment (Tables)
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995687 - Disclosure - Deposits (Tables)
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995697 - Disclosure - Federal Home Loan Bank Advances and Other Borrowings (Tables)
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995707 - Disclosure - Income Taxes (Tables)
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995717 - Disclosure - Other Commitments and Contingencies (Tables)
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995727 - Disclosure - Related Parties (Tables)
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995737 - Disclosure - Minimum Regulatory Capital Requirements (Tables)
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995747 - Disclosure - Accumulated Other Comprehensive Loss (Tables)
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995757 - Disclosure - Employee Benefit Plans (Tables)
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995767 - Disclosure - Fair Value Measurements (Tables)
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995777 - Disclosure - Earnings Per Share (Tables)
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995787 - Disclosure - Condensed Financial Information (Parent Company Only) (Tables)
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995797 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details)
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995807 - Disclosure - Summary of Significant Accounting Policies - Summary of Impact by Segment (Details)
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995817 - Disclosure - Investment Securities - Summary of Amortized Cost and Fair Value of Securities Available for Sale and Held to Maturity, With Gross Unrealized Gains and Losses (Details)
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995827 - Disclosure - Investment Securities - Summary of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Details)
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995837 - Disclosure - Investment Securities - Additional Information (Details)
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995847 - Disclosure - Investment Securities - Summary of Securities in an Unrealized Loss Position (Details)
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995857 - Disclosure - Loans and Allowance for Credit Losses - Additional Information (Details)
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995867 - Disclosure - Loans and Allowance for Credit Losses - Schedule of Impact of Segment Update to Loan Portfolio and ACL (Details)
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995877 - Disclosure - Loans and Allowance for Credit Losses - Schedule of Composition of Net Loans (Details)
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995887 - Disclosure - Loans and Allowance for Credit Losses - Schedule of Allowance for Credit Losses by Portfolio Segment (Details)
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995897 - Disclosure - Loans and Allowance for Credit Losses - Summary Risk Ratings Within Loan Portfolio and Current Period Charge-offs, By Loan Segment and Origination Year (Details)
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995907 - Disclosure - Loans and Allowance for Credit Losses - Summary of Amortized Cost Basis of Loans on Nonaccrual Status and Loans Past Due 90 days or More and Still Accruing (Details)
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995917 - Disclosure - Loans and Allowance for Credit Losses - Summary of Aging Analysis of Past Due Loans By Portfolio Segment (Details)
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995927 - Disclosure - Loans and Allowance for Credit Losses - Summary of Amortized Cost Basis of Collateral-dependent Loans By Collateral Type (Details)
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995937 - Disclosure - Loans and Allowance for Credit Losses - Summary of Amortized Cost Basis of Loans Experiencing Financial Difficulty and Modified By Class and By Type of Modification (Details)
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995947 - Disclosure - Loans and Allowance for Credit Losses - Schedule of Performance of Loans Modified in Last 12 Months (Details)
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995957 - Disclosure - Loans and Allowance for Credit Losses - Schedule of Amortized Cost Basis of Loans Payment Default and Modified in Prior 12 Months (Details)
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995967 - Disclosure - Loans and Allowance for Credit Losses - Summary of Changes to MSRs (Details)
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995977 - Disclosure - Derivative Financial Instruments - Additional Information (Details)
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995987 - Disclosure - Derivative Financial Instruments - Summary of Derivatives Recorded (Details)
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995997 - Disclosure - Premises and Equipment - Summary of Cost and Accumulated Depreciation and Amortization of Premises and Equipment (Details)
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996007 - Disclosure - Premises and Equipment Additional Information (Details)
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996017 - Disclosure - Deposits - Summary of Deposit Balances (Details)
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996027 - Disclosure - Deposits - Additional Information (Details)
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996037 - Disclosure - Deposits - Scheduled Maturities and Weighted Average Rates of Timed Deposits (Details)
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996047 - Disclosure - Federal Home Loan Bank Advances and Other Borrowings - Summary of FHLB (Details)
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996057 - Disclosure - Federal Home Loan Bank Advances and Other Borrowing - Additional Information (Details)
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996067 - Disclosure - Subordinated Debt - Additional Information (Details)
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996077 - Disclosure - Income Taxes - Schedule of the Federal and State Income Tax Provision (Benefit) Between Current and Deferred Portions (Details)
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996087 - Disclosure - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)
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996097 - Disclosure - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Parenthetical) (Details)
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996107 - Disclosure - Income Taxes - Schedule of Income Taxes Paid Net (Details)
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996117 - Disclosure - Income Taxes - Schedule of Net Deferred Tax Asset Related To Federal And State (Details)
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996127 - Disclosure - Income Taxes - Summary of Net Deferred Tax Asset (Details)
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996137 - Disclosure - Income Taxes (Additional Information) (Details)
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996147 - Disclosure - Other Commitments and Contingencies - Additional Information (Details)
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996157 - Disclosure - Other Commitments and Contingencies - Summary of Classification of ROU Assets and Lease Liabilities on Consolidated Balance Sheets (Details)
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996167 - Disclosure - Other Commitments and Contingencies - Summary of Weighted-Average Remaining Lease Term and Discount Rate (Details)
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996177 - Disclosure - Other Commitments and Contingencies - Components of Lease Expense for Operating Leases (Details)
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996187 - Disclosure - Other Commitments and Contingencies - Components of Lease Expense for Finance Leases (Details)
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996197 - Disclosure - Other Commitments and Contingencies - Components of Lease Expense for Finance Leases (Details) 2
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996207 - Disclosure - Other Commitments and Contingencies - Supplemental Cash Flow Information Related to Leases (Details)
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996217 - Disclosure - Other Commitments and Contingencies - Future Undiscounted Lease Payments (Details)
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996227 - Disclosure - Other Commitments and Contingencies - Future Undiscounted Lease Payments (Details) 2
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996237 - Disclosure - Other Commitments and Contingencies - Future Undiscounted Lease Payments (Details) 4
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996247 - Disclosure - Other Commitments and Contingencies - Future Undiscounted Lease Payments (Details) 5
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996257 - Disclosure - Other Commitments and Contingencies - Off-Balance-Sheet Financial Instruments Related to Credit Risk (Details)
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996267 - Disclosure - Related Parties - Schedule of Aggregate Loan Transactions with Related Parties (Details)
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996277 - Disclosure - Related Parties - Additional Information (Details)
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996287 - Disclosure - Minimum Regulatory Capital Requirements - Additional Information (Details)
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996297 - Disclosure - Minimum Regulatory Capital Requirements - Schedule of Capital Amounts and Ratios (Details)
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996307 - Disclosure - Accumulated Other Comprehensive Loss - Schedule of Components of Accumulated Other Comprehensive (Loss) (Details)
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996317 - Disclosure - Employee Benefit Plans - Additional Information (Details)
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996327 - Disclosure - Employee Benefit Plans - Summary of Share information held by the ESOP (Details)
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996337 - Disclosure - Fair Value Measurements - Additional Information (Details)
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996347 - Disclosure - Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)
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996357 - Disclosure - Fair Value Measurements - Summary of Assets Measured at Fair Value on Non-recurring Basis (Details)
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996367 - Disclosure - Fair Value Measurements - Summary of Carrying Amounts and Estimated Fair Values of Consolidated Financial Instruments (Details)
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996377 - Disclosure - Earnings Per Share - Additional Information (Details)
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996387 - Disclosure - Earnings Per Share - Schedule of Basic and Diluted Earnings Per Share (Details)
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996397 - Disclosure - Condensed Financial Information (Parent Company Only) - Condensed Balance Sheets (Details)
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996407 - Disclosure - Condensed Financial Information (Parent Company Only) - Condensed Statements of Operations (Details)
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996417 - Disclosure - Condensed Financial Information (Parent Company Only) - Condensed Statements of Cash Flows (Details)
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996427 - Disclosure - Condensed Financial Information (Parent Company Only) - Condensed Statements of Cash Flows (Parenthetical) (Details)
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Equity securities
Equity Securities, FV-NI
Equity Securities, FV-NI, Total
Proceeds from Sale of Property, Plant, and Equipment
Proceeds from Sale of Property, Plant, and Equipment, Total
Proceeds from sale of premises and equipment
Retirement Plan Type [Axis]
Cash and due from banks, Fair Value
Cash and due from banks Fair Value Disclosure
Cash and due from banks Fair Value Disclosure
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
90 Days or More Past Due
Bank's Employee Stock Ownership Plan [Member]
Bank's employee stock ownership plan.
Bank's Employee Stock Ownership Plan
Home Equity
Home Equity Loan [Member]
Employee Stock Ownership Plan (ESOP), Shares in ESOP
Total shares
Shares purchased under ESOP
Financing Receivable, Allowance for Credit Loss, Writeoff
Financing Receivable, Allowance for Credit Loss, Writeoff, Total
Loans charged-off
Loans charged-off
Financing Receivable, Modified, Past Due [Table Text Block]
Schedule of Performance of Loans Modified in Last 12 Months
Loan, Nonmortgage, Held-for-Sale [Policy Text Block]
Loans Held For Sale
Finance Lease, Liability
Net lease liabilities
Net lease liabilities
Finance leases
Schedule of Related Party Transactions [Table Text Block]
Schedule of Aggregate Loan Transactions with Related Parties
Entity Incorporation, State or Country Code
Consumer Installment [Member]
Consumer Installment.
Consumer Installment
Finance Lease, Liability, to be Paid, Year Four
2029
Statement of Financial Position Location, Balance [Domain]
Redemption of Federal Home Loan Bank stock
Proceeds from Sale of Federal Home Loan Bank Stock
Deferred Tax Liabilities, Mortgage Servicing Rights
Mortgage servicing rights
Mortgage servicing rights
Interest expense:
Interest Expense, Operating [Abstract]
Expense
Financing Receivable Portfolio Segment [Axis]
Plan Name [Axis]
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer
Twelve Months or Greater
Entity Current Reporting Status
Class of Financing Receivable [Axis]
Employee Stock Ownership Plan (ESOP), Debt Structure, Direct Loan, Term
Employee Stock Ownership Plan (ESOP), Debt Structure, Direct Loan, Term
ESOP loan term
Municipal Bonds [Member]
Municipal Securities
Debt Instrument, Issuance Date
Subordinated debt, issue date
Fair Value, Inputs, Level 2 [Member]
Level 2
Deferred Tax Assets, Net of Valuation Allowance
Deferred tax assets, net of valuation allowance
Deferred tax assets
Commitments and Contingencies Disclosure [Text Block]
Other Commitments and Contingencies
Cash Flow Hedging [Member]
Cash Flow Hedges
Lease Cash Flow Information Disclosure [Table Text Block]
Supplemental cash flow information related to leases.
Supplemental Cash Flow Information Related to Leases
Common Stock, Shares Authorized
Common stock, shares authorized
MASSACHUSETTS
Massachusetts
Commercial Real Estate Multi-family [Member]
Commercial real estate multi-family.
Commercial Real Estate Multifamily
Financing Receivable Credit Loss Expense Reversal On Loans
Financing receivable credit loss expense reversal on loans.
Credit loss expense / (reversal)
Fair Value by Liability Class [Domain]
Document Fiscal Period Focus
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Finance Lease, Liability, to be Paid
Total undiscounted lease payments
Finance Lease, Liability [Abstract]
Finance lease expense:
Percentage Of Common Stock Subscribed For Employee Stock Ownership Plan In Connection With Conversion
Percentage of common stock subscribed for employee stock ownership plan in connection with conversion
Percentage of common stock subscribed for employee stock ownership plan in connection with conversion.
Debt Instrument, Interest Rate, Stated Percentage
Subordinated debt, fixed interest rate
Entity Shell Company
SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis]
Segment Reporting, Policy [Policy Text Block]
Segment Information
Defined Benefit Plan, Benefit Obligation
Defined Benefit Plan, Benefit Obligation, Ending Balance
Defined Benefit Plan, Benefit Obligation, Beginning Balance
Employee benefit plans, benefit paid
Condensed Financial Information Disclosure [Abstract]
Valuation Allowance [Line Items]
US Government-sponsored Enterprises Debt Securities [Member]
U.S. Government and Government-Sponsored Enterprise Obligations
Receivable Type [Axis]
Cybersecurity Risk Management, Strategy, and Governance [Abstract]
Common Stock, Shares, Issued
Common Stock, Shares, Issued
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]
Cybersecurity Risk Board of Directors Oversight [Text Block]
Asset Class [Domain]
Statement [Table]
Tier 1 Risk-Based Capital:, Minimum capital requirement ratio
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum
Proceeds from Loans
Proceeds from sale of loans
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Lease liabilities arising from obtaining right-of-use assets
Interest Receivable
Accrued interest receivable
Accrued interest receivable on investments
New loans
Loans and Leases Receivable, Related Parties, Additions
Loans and Leases Receivable, Related Parties, Proceeds
Repayments
Impact of Methodology Change
Impact of Methodology Change [Member]
Impact of methodology change.
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest
Loans, allowance for credit losses
Allowance for credit loan losses
Allowance for Credit Losses, Beginning Balance
Allowance for Credit Losses, Ending Balance
Allowance for credit losses
Allowance for credit losses
Statement [Line Items]
Revenue from Contracts with Customers
Revenue from Contract with Customer [Policy Text Block]
Banking Regulation, Tier 1 Risk-Based Capital, Actual
Tier 1 Risk-Based Capital:, Actual amount
Entity Filer Category
Reclassification, Comparability Adjustment [Policy Text Block]
Reclassification
60 - 89 Days Past Due
Financial Asset, 60 to 89 Days Past Due [Member]
Loss [Member]
Loss.
Loss
Financing Receivable, Past Due [Table]
Cash paid for amounts included in the measurement of lease liabilities:
Cash paid for amounts included in the measurement of lease liabilities [Abstract]
Cash paid for amounts included in the measurement of lease liabilities.
Liabilities and Equity
Total liabilities and shareholders' equity
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date
Held to maturity debt securities, amortized cost
Total securities with defined maturities, amortized cost
Financing Receivable, Allowance for Credit Loss, Recovery
Recoveries
Noninterest Income
Total non-interest income
Investment in Federal Home Loan Bank Stock [Member]
Federal Home Loan Bank Stock
Income Tax Paid, State and Local, after Refund Received, Percent
Income tax paid, state and local, after refund received, percent.
States, Percent
Long-Lived Tangible Asset [Axis]
Finance Lease, Liability, to be Paid, Year Three
2028
Fair Value, by Balance Sheet Grouping [Table Text Block]
Summary of Carrying Amounts and Estimated Fair Values of Consolidated Financial Instruments
Hedging Relationship [Axis]
Unpaid Principal Balances of Loans Serviced for Others
Unpaid principal balances of loans serviced for others.
Unpaid principal balances of loans serviced for others
Amortized cost basis of collateral dependent loans by collateral type [Table Text Block]
Amortized cost basis of collateral-dependent loans by collateral type.
Summary of Amortized Cost Basis of Collateral-dependent Loans By Collateral Type
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]
Banking Regulation, Tier 1 Leverage Capital, Actual
Tier 1 Leverage Capital:, Actual amount
Charitable contributions
Deferred Tax Assets, Charitable Contribution Carryforwards
Certificates of deposit fair value disclosure
Certificates of deposit fair value disclosure.
Certificates of deposit, Fair Value
Financial Asset, 30 to 59 Days Past Due [Member]
30 - 59 Days Past Due
Deferred Tax Assets, Valuation Allowance
Valuation allowance
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Tax at the statutory income tax rate
Shares Issued, Price Per Share
Shares issued, price per share
Cybersecurity Risk Management Third Party Engaged [Flag]
Derivative Asset, Notional Amount
Total included in other assets, Notional Amount
Goodwill
Goodwill, Ending Balance
Goodwill, Beginning Balance
Goodwill, Total
Goodwill
Effective Income Tax Rate Reconciliation, Percent
Total tax (benefit) expense
Income tax (benefit) expense
Foreclosed Real Estate Expense
Problem loan and foreclosed real estate, net
Income Tax Jurisdiction [Axis]
Deposits, by Type [Abstract]
Derivative Liability, Measurement Input
Federal Home Loan Bank, Advances, Maturities Summary, Due in Rolling Year Three
Over 2 years to 3 years, amount
Other Comprehensive Income (Loss), before Tax
Other comprehensive income, before tax
Purchases of Federal Home Loan Bank stock
Payments to Acquire Federal Home Loan Bank Stock
Increase Decrease In Issuance Of Common Shares To Charitable Foundation
Increase decrease in issuance of common shares to charitable foundation.
Issuance of common shares donated to the Avidia Bank Charitable Foundation
Financial liabilities:
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Borrowings Outstanding
Borrowings outstanding.
Borrowings outstanding
Defined Benefit Plan, Plan Assets, Benefits Paid
Employee Benefit Plans benefits paid
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost
After 1 year through 5 years
Summary of Significant Accounting Policies [Table]
Summary of significant accounting policies.
Employee Stock Ownership Plan (ESOP) Disclosures [Table Text Block]
Summary of Share information held by the ESOP
Property, Plant and Equipment [Line Items]
Proceeds from issuance of long-term Federal Home Loan Bank advances
Proceeds from Issuance of Secured Debt
Individually Analyzed Loans
Individually Analyzed Loans [Member]
Individually analyzed loans.
Deposits, Fair Value Disclosure
Deposits, other than certificates of deposit, Fair Value
Cybersecurity Risk Management, Strategy, and Governance [Table]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Schedule of Basic and Diluted Earnings Per Share
Increase (Decrease) in Other Operating Assets and Liabilities, Net
Increase (Decrease) in Other Operating Assets and Liabilities, Net, Total
Other, net
Special Mention [Member]
Special Mention
Payment to Acquire Life Insurance Policy, Investing Activities
Purchases of bank owned life insurance
Purchases of bank owned life insurance
Investments Classified by Contractual Maturity Date [Table Text Block]
Summary of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity
Earnings Per Share, Basic
Earnings Per Share, Basic, Total
Basic
Mortgage Servicing Rights Default Rate Percentage
Mortgage servicing rights default rate percentage.
Mortgage servicing rights default rate percentage
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain
Securities Held to Maturity, Gross Unrealized Gains
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure
Federal Home Loan Bank stock, Fair Value
Commercial Portfolio Segment [Member]
Commercial Loans
Commercial and Industrial Loans
Occupancy And Equipment
Occupancy and equipment.
Occupancy and equipment
Payments for (Proceeds from) Loans and Leases
Payments for (Proceeds from) Loans and Leases, Total
Loan originations, net of principal payments
Servicing Asset at Fair Value, Amount
Servicing Asset at Fair Value, Amount, Ending Balance
Servicing Asset at Fair Value, Amount, Beginning Balance
MSRs, Fair Value
Loans and Leases Receivable Disclosure [Line Items]
Repayment of long-term Federal Home Loan Bank advances
Repayments of Secured Debt
Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance
Nonaccrual with No ACL
Retirement Plan Type [Domain]
Proceeds from Sale of Equity Securities, FV-NI
Sales
Servicing Fee Income
Servicing fee income.
Servicing fee income
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Adjustments to reconcile net (loss) income to net cash used by operating activities:
Lessee, Operating Lease, Liability, to be Paid, Year Five
2030
Hedging Designation [Domain]
Income Tax Paid, Federal, after Refund Received
Income Tax Paid, Federal, after Refund Received, Total
Federal
Domestic Tax Jurisdiction [Member]
Federal
Mortgage servicing rights [Member]
Mortgage servicing rights.
Mortgage Servicing Rights
MSRs
Financing Receivable, Allowance for Credit Loss [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years
Over 10 years
Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]
Available for Sale, Fair Value
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Allowance for Credit Losses [Member]
Parent Company [Member]
Parent Company
Consolidation Items [Domain]
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits
Employee benefit plans
Equity, Attributable to Parent [Abstract]
Shareholders' equity:
Financing Receivable, Nonaccrual, Interest Income
Interest income on nonaccrual loans
Securities Borrowed
Securities held to maturity, Carrying Amount
Total securities
Entity Small Business
Interest and Dividend Income, Operating [Abstract]
Interest and dividend income:
Income:
Loans Before Allowance for Credit Loss
Loans before allowance for credit loss.
Total loans
Hedging Designation [Axis]
Deposit Liabilities, Type [Table Text Block]
Summary of Deposit Balances
Payment Deferral [Member]
Payment Delay
Deposits, other than certificates of deposit
Deposits, other than certificates of deposit.
Deposits, other than certificates of deposit, Carrying Amount
Retained Earnings (Accumulated Deficit)
Retained Earnings (Accumulated Deficit), Total
Retained earnings
Net Investment in Lease, Credit Loss Expense (Reversal)
Net Investment in Lease, Credit Loss Expense (Reversal), Total
Credit loss reversal - off-balance sheet credit exposures
Financing Receivable, Nonaccrual [Table Text Block]
Summary of Amortized Cost Basis of Loans on Nonaccrual Status
Purchases
Payments to Acquire Equity Securities, FV-NI
Securities, held to maturity, allowance for credit losses
Debt Securities, Held-to-Maturity, Allowance for Credit Loss
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Ending Balance
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Beginning Balance
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Total
Entity Well-known Seasoned Issuer
Sale of Direct Merchant Portfolio [Policy Text Block]
Sale of direct merchant portfolio.
Sale of Direct Merchant Portfolio
Amendment Flag
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax
Unrealized holding gains (losses) arising during period
Loss Contingencies [Line Items]
Deferred Tax Liabilities, Deferred loan costs, net
Deferred tax liabilities, Deferred loan costs, net,
Deferred loan costs, net
Deferred loan costs, net
Subordinated Borrowing, Due Date
Subordinated debt, maturity date
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Tax at the statutory income tax rate, Amount
Bank Premises and Vehicles [Member]
Bank Premises and Vehicles.
Bank Premises and Vehicles
Finance Lease, Interest Expense
Interest on lease liabilities
Corporate Credit Card [Member]
Corporate Credit Card.
Corporate Credit Card
Liabilities and Equity [Abstract]
Liabilities and Shareholders' Equity
Interest Expense, Subordinated Notes and Debentures
Subordinated debt
Contractual interest expense on subordinated debt
Entity Address, Postal Zip Code
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided by operating activities
Substandard [Member]
Substandard
Utilities Operating Expense, Depreciation and Amortization
Common Stock [Member]
Common Stock
All Business Assets and Real Estate [Member]
All business assets and real estate.
All Business Assets and Real Estate
Line Of Credit Facility Borrowings Percentage
Line of credit facility borrowings percentage.
Borrowings percentage
Cybersecurity Risk Role of Management [Text Block]
Employee Stock Ownership Plan (ESOP), Deferred Shares, Fair Value
Fair value of unallocated shares
Hedging Relationship [Domain]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]
Schedule of Capital Amounts and Ratios
Lessee, Operating Lease, Liability, to be Paid, Year Three
2028
Subordinated Debt Obligations, Fair Value Disclosure
Subordinated debt, Fair Value
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total
Accumulated depreciation and amortization
Dividend Income, Operating
Dividend Income, Operating, Total
Dividends from subsidiaries
Loans, net of allowance for credit losses of $21,849 in 2025 and $21,741 in 2024
Loans, net, Carrying Amount
Net Loans
Net loans
One to Four Family Residential
One To Four Family Residential [Member]
One to four family residential.
Debt Securities, Available-for-Sale [Line Items]
Income Tax Paid, by Individual Jurisdiction [Line Items]
Interest Rate Swaps Related to FHLB Advances and Agency Securities [Member]
Interest rate swaps related to FHLB advances and agency securities.
Interest Rate Swaps Related to FHLB Advances and Agency Securities
Entity Address, Address Line One
Deferred Tax Liabilities, Gross
Deferred tax liabilities
Deferred tax liabilities
Deferred tax liabilities
Deferred tax liabilities
Fair Value Hierarchy and NAV [Axis]
Earnings Per Share [Abstract]
Loss per common share:
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost
Total securities with defined maturities, amortized cost
Income Tax, Policy [Policy Text Block]
Income Taxes
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]
Consumer Portfolio Segment [Member]
Consumer
Consumer loans
Deferred Tax Assets, Swap
Deferred tax assets, Swap.
Swap
Supplementary cash flow information:
Residential Real Estate [Member]
Residential Real Estate
Financing receivable contractual past due period
Financing receivable contractual past due period.
Banking Regulation, Tier 1 Leverage Capital Ratio, Actual
Tier 1 Leverage Capital:, Actual ratio
Stock Issued During Period Shares New Issues To Charitable Foundation
Stock issued during period shares new issues to charitable foundation.
Issuance of common shares donated to Avidia Bank Charitable Foundation, Shares
Statement of Financial Position Location, Balance [Axis]
Investment Type [Axis]
Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Fair Value
Total securities with defined maturities, fair value
Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage
Percent of Loan Segment
Fair Value Measurements, Nonrecurring [Table Text Block]
Summary of Assets Measured at Fair Value on Non-recurring Basis
Operating Lease, Right-of-Use Asset
Operating leases
Less: imputed income
Finance Lease, Liability, Undiscounted Excess Amount
Less: imputed interest
Debt Securities, Available-for-Sale, Unrealized Loss Position
Total
Total
Deferred Tax Assets, Gross
Deferred tax assets
Deferred tax assets, before valuation allowance
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]
Employee Stock Ownership Plan
Employee Stock Ownership Plan [Member]
Employee Stock Ownership Plan [Member]
Payments to Acquire Debt Securities, Available-for-Sale
Purchases
Document Type
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Commercial and Mortgage Loan Commitments [Member]
Commercial and Mortgage Loan Commitments.
Commercial and Mortgage Loan Commitments
Financing Receivable, Individually Evaluated for Credit Loss
Financing Receivable, Individually Evaluated for Credit Loss, Total
Impairments
Income taxes paid, net of refunds
Income Taxes Paid, Net
Income Taxes Paid, Net, Total
Net payment
Entity Central Index Key
Banking Regulation, Tier 1 Leverage Capital, Well Capitalized, Minimum
Tier 1 Leverage Capital:, Minimum to be well capitalized under prompt corrective action provisions amount
Financing receivable excluding accrued interest nonaccrual with allowance for credit loss
Financing receivable excluding accrued interest nonaccrual with allowance for credit loss.
Non-accrual with an ACL
Investments, Debt and Equity Securities [Abstract]
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]
Balance, beginning of year
Loans and Leases Receivable, Related Parties
Balance, end of year
Valuation Approach and Technique [Axis]
Net change in cash and cash equivalents
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation
Net change in cash and cash equivalents
Condensed Balance Sheet [Table Text Block]
Condensed Balance Sheets
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Dilutive securities
Securities Available For Sale [Abstract]
Securities available for sale.
Securities available for sale
Impairment of Long-Lived Assets to be Disposed of
Net write down on premises and equipment no longer in use
Net write down on premises and equipment no longer in use
Factored accounts receivable [Member]
Factored accounts receivable.
Factored Accounts Receivable
Common Stock, Par or Stated Value Per Share
Common stock, par value
Liabilities [Abstract]
Liabilities:
Lease Quantitative Disclosure [Table Text Block]
Tabular disclosure of weighted average remaining lease term and the weighted average discount rate.
Summary of Weighted-Average Remaining Lease Term and Discount Rate
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual
Common Equity Tier 1 Risk-Based Capital, Actual amount
Financing Receivable, Credit Quality Indicator [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost
Securities available for sale, at fair value, amortized cost
Available-for-sale debt securities, amortized cost
Total, amortized cost
Components of Deferred Tax Assets and Liabilities [Abstract]
Securities Available for Sale, Fair Value
Total, fair value
Securities available for sale, at fair value (amortized cost $285,252 in 2025 and $293,649 in 2024)
Noninterest Income [Abstract]
Non-interest income:
Operating and finance lease right of use assets
Operating and finance lease right of use assets.
Total lease right-of-use assets
Document Financial Statement Error Correction [Flag]
Doubtful [Member]
Doubtful
Condensed Cash Flow Statements, Captions [Line Items]
Interest Rate Swaps Related to Customer Loans [Member]
Interest rate swaps related to customer loans.
Interest Rate Swaps Related to Customer Loans
Financing Receivable Modified Past12 Months With Payment Default
Financing receivable modified past12 months with payment default.
Loans modified in the prior 12 months with payment default
Financial assets:
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Derivative, Notional Amount
Interest rate swaps, notional amounts
Deferred Tax Assets SBA PPP Fees
Deferred tax assets SBA PPP fees.
SBA PPP fees
Current Fiscal Year End Date
Gains (Losses) on Sales of Other Real Estate
Gain on sale of other real estate owned
Phantom Stock Plan [Member]
Phantom stock plan member.
Phantom Stock Plan
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Total
Investments in subsidiaries
Document Quarterly Report
Receivables [Abstract]
Advertising Costs
Advertising Cost [Policy Text Block]
Assets Sold under Agreements to Repurchase, Type [Domain]
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale [Abstract]
Securities available for sale
Federal Reserve Bank of Boston Discount Window
Federal Reserve Bank of Boston Discount Window [Member]
Federal reserve bank of Boston discount window.
Fair Value, by Balance Sheet Grouping [Table]
Entity Address, State or Province
Information Technology and Data Processing
Data processing
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Accumulated other comprehensive loss
Comprehensive income
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Securities Available for Sale, Gross Unrealized Gains
Federal Home Loan Bank advances
Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-Term
Credit Card Receivable [Member]
Credit Cards
Increase (Decrease) in Accrued Interest Receivable, Net
Net change in accrued interest receivable
Accounts Receivables
Accounts Receivable [Member]
Contingent recourse liability
Contingent Recourse Liability
Contingent recourse liability.
Internal Credit Assessment [Axis]
Equity Securities, FV-NI, Unrealized Gain
Equity securities and recognized gains
Other General and Administrative Expense
Other general and administrative
Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing
Loans past due 90 days or more and still accruing
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total
Total
Financing receivable recorded amount
Total loans
State taxes, net of federal tax benefit, Amount
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
State
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Professional fees
Professional Fees
Thereafter
Finance Lease, Liability, to be Paid, after Year Five
Comprehensive Income, Policy [Policy Text Block]
Comprehensive Income
Reserve subject to taxation description
Reserve subject to taxation description.
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Components of The Net Deferred Tax Asset
Time Deposit Maturities, Year Five
Over 4 years to 5 years
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income:
Deferred Income Tax Assets, Net
Net deferred tax asset
Marketable Securities, Policy [Policy Text Block]
Securities
Property, Plant and Equipment [Abstract]
Interest Expense, Operating
Total interest expense
Interest expense
Interest Income (Expense), after Provision for Loan Loss
Net interest income, after credit loss expense (reversal)
Term certificate accounts of $250,000 and greater
Term certificate accounts of $250,000 and greater.
Number of Corporate Bond Which Issued by National Financial Institution
Number of corporate bond which issued by national financial institution.
Number of corporate bond which issued by national financial institution
Debt Securities
Total securities
Total securities
Securities
Derivative Liability, Notional Amount
Total included in other liabilities, Notional Amount
Proceeds from Sale of Debt Securities, Available-for-Sale
Proceeds from sales of securities available for sale
Financing Receivable, Modified, Past Due [Table]
Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value
Within 1 year
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual
Common Equity Tier 1 Risk-Based Capital, Actual ratio
State and Local Jurisdiction [Member]
State
Tax benefits related to affordable housing tax credits
Tax benefits related to affordable housing tax credits.
Available-for-Sale Securities [Member]
Available-for-sale Securities
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent [Member]
Cash [Member]
Cash
Goodwill impairment
Goodwill, Impairment Loss
Gain Loss On Sale Of Securities
Gain loss on sale of securities.
Losses on sale of securities
Summary of Significant Accounting Policies [Line Items]
Summary of significant accounting policies.
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred tax (benefit) provision
Investment, Proportional Amortization Method, Elected, Amount
Investments in qualified affordable housing projects
Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost
Available-for-sale debt securities, amortized cost
Minimum
Minimum [Member]
Financial Instrument [Axis]
Life Insurance, Corporate or Bank Owned, Change in Value
Income on bank-owned life insurance
Mortgage Servicing Rights (Payoffs) Additions
Mortgage servicing rights (payoffs) additions.
(Payoffs) additions
Real Estate [Member]
Real Estate
Deferred tax effect
Deferred tax effect
Other Comprehensive Income (Loss), Tax
Other Comprehensive Income (Loss), Tax, Total
Financial Instrument, Other [Member]
Other
Payments to Fund Long-Term Loans to Related Parties
Repayments
Repayments
Deferred Tax Asset, Debt Securities, Available-for-Sale, Unrealized Loss
Net unrealized loss on available for sale securities
Fair Value, Inputs, Level 3 [Member]
Level 3
Fair Value, Nonrecurring [Member]
Fair Value, Nonrecurring
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis
Time Deposit Maturities, Year Four
Over 3 years to 4 years
Financing Receivable, Nonaccrual [Table]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost
Over 10 years
Credit loss expense.
Credit Loss Expense
Charge to credit loss
Related Party Transactions [Abstract]
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities
Accrued expenses
Financing Receivables 30 To 89 Days Past Due [Member]
Financing receivables 30 to 89 days past due.
30-89 Days Past Due
Business Manager
Business Manager [Member]
Business manager.
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Schedule of Composition of Net Loans
Accounts Payable and Accrued Liabilities [Member]
Included in Accrued Expenses and Other Liabilities
SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain]
Deferred Compensation, Share-Based Payments [Member]
Unallocated ESOP Common Stock
Defined Benefit Plan, Service Cost
Employee benefit plans, expense
Condensed Income Statements, Captions [Line Items]
Income Tax Paid, Federal, after Refund Received, Percent
Income tax paid, federal, after refund received, percent.
Federal, Percent
Operating Lease, Liability
Net lease liabilities
Net lease liabilities
Operating leases
Auditor Firm ID
Debt Instrument, Basis Spread on Variable Rate
Subordinated debt, basis points
Credit Loss Status [Axis]
Employee Stock Ownership Plan (ESOP), Number of Allocated Shares
Allocated shares
Accrued interest receivable
Accrued interest receivable.
Accrued interest receivable, Carrying Amount
Financing Receivable, Held-for-Investment, Foreclosed Asset [Policy Text Block]
Foreclosed Assets
Weighted-average discount rate, Finance lease liabilities
Finance Lease, Weighted Average Discount Rate, Percent
Interest and Dividend Income, Operating
Total interest and dividend income
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent
Valuation allowance
Interest Income (Expense), Operating
Net interest income
Payments to Acquire Equity Method Investments
Capital contribution to Avidia Bank
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss
Total, amortized cost
Held to maturity debt securities, amortized cost
Deposits, Money Market Deposits
Money market
Consumer and Home Equity Loans
Consumer, Other [Member]
Defined Benefit Plan [Text Block]
Employee Benefit Plans
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]
Loss Contingencies [Table]
Weighted Average Number of Shares Outstanding, Basic
Weighted Average Number of Shares Outstanding, Basic, Total
Basic
Average number of basic shares outstanding
Net change in short-term Federal Home Loan Bank advances
Net change in short-term Federal Home Loan Bank advances.
Net change in short-term Federal Home Loan Bank advances
Payments For Donation
Payments for donation.
Payments for donation
Cash Surrender Value, Fair Value Disclosure
Bank-owned life insurance, Fair Value
Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract]
Available for Sale, Amortized Cost
Payment processing income
Payment Processing Income
Payment processing income.
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation
Principal Re Advance [Member]
Principal re-advance.
Principal Re-Advance
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
Twelve Months or Greater
Long-Lived Tangible Asset [Domain]
Mortgage Servicing Rights Payoffs
Payoffs
Mortgage servicing rights (payoffs).
Interest and noninterest expense
Interest and noninterest expense.
Total expense
Interest Payable
Accrued interest payable, Carrying Amount
Employee Stock Ownership Plan (ESOP), Plan [Domain]
Operating leases
Deferred Tax Assets, Operating Leases
Deferred tax assets, Operating leases.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)
Credit loss reversal - off-balance sheet credit exposures
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Loans Receivable, Fair Value Disclosure
Loans, net, Fair Value
Condominium Associations [Member]
Condominium associations.
Condominium Associations
Effective Income Tax Rate Reconciliation, Tax Credit, Percent
Effective Income Tax Rate Reconciliation, Tax Credit, Percent, Total
Tax credits (net of ammortization)
Tax credits (net of ammortization)
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual
Tier 1 Risk-Based Capital:, Actual ratio
Related Party Transactions Disclosure [Text Block]
Related Parties
Amortization of ESOP Award
ESOP shares committed to be allocated and released
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent
Tax exempt income
Bank-owned life insurance
Tax exempt income
Deferred Tax Asset, In-Process Research and Development
Research and expenditures
Valuation allowance, Amount
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
Equity, Attributable to Parent
Balances at beginning of period
Balances at end of period
Total shareholders' equity
Shareholders' equity
Financing Receivable, Held-for-Sale
Loans held for sale
Loans held for sale, Carrying Amount
Statement of Stockholders' Equity [Abstract]
Negotiable Order of Withdrawal NOW And Demand Deposits
Negotiable order of withdrawal NOW and demand deposits.
NOW and demand
Time Deposit Maturities [Table Text Block]
Scheduled Maturities and Weighted Average Rates of Timed Deposits
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss
Securities Held to Maturity, Gross Unrealized Losses
Right of use asset [Member]
RightOfUseAsset
Right of Use Asset
Valuation Approach and Technique [Domain]
Use of Estimates, Policy [Policy Text Block]
Use of Estimates
Credit Loss, Financial Instrument [Policy Text Block]
Allowance for Credit Losses
Remaining Life Method [Member]
Remaining life method.
Remaining Life Method
Internal Credit Assessment [Domain]
Weighted- Average Term Extension (months)
Financing Receivable, Modified, Weighted Average Term Increase from Modification
Leaseholds and Leasehold Improvements [Member]
Leashold Improvements
Defined Benefit Plan Disclosure [Line Items]
OCI, before Reclassifications, Net of Tax, Attributable to Parent
Other comprehensive income
Condensed Income Statement [Table Text Block]
Condensed Statements of Operations
Fair Value Disclosures [Text Block]
Fair Value Measurements
Purchases
Payments to Acquire Held-to-Maturity Securities
Purchases
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years
After 5 years through 10 years
Schedule of Net Deferred Tax Asset Related To Federal And State
Schedule of net deferred tax asset related to federal and state.
Collateral dependent loans [Member]
Collateral-dependent loans.
Collateral-dependent Loans
Banking Regulation, Tier 1 Risk-Based Capital, Well Capitalized, Minimum
Tier 1 Risk-Based Capital: Minimum to be well capitalized under prompt corrective action provisions amount
Noncash transactions
Noncash Investing and Financing Items [Abstract]
Accrued Liabilities and Other Liabilities
Accrued expenses and other liabilities
Accrued expenses
Income (Loss) from Equity Method Investments
Equity in undistributed net income of subsidiary
Equity in undistributed net income of subsidiary
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Banking Regulation, Total Risk-Based Capital, Well Capitalized, Minimum
Total Risk-Based Capital:, Minimum to be well capitalized under prompt corrective action provisions amount
Condensed Financial Information of Parent Company Only Disclosure [Text Block]
Condensed Financial Information (Parent Company Only)
Plan Name [Domain]
Past Due, Financial Instrument [Abstract]
Loans originated for sale
Payment for Origination, Loan, Mortgage, Held-for-Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Building [Member]
Buildings
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]
Stock Issued During Period, Value, Other
Common stock issued to Avidia Bank Charitable Foundation, value
Loan Restructuring Modification [Axis]
Current State and Local Tax Expense (Benefit)
State
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]
Finance Lease, Liability, to be Paid, Year One
2026
Debt Securities [Member]
Debt Securities
Other Commercial and Industrial
Other Commercial and Industrial [member]
Other commercial and industrial.
Securities Purchased under Agreements to Resell
Securities Purchased under Agreements to Resell, Total
Securities available for sale, Carrying Amount
Operating Leases
Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract]
Proceeds from Sale of Other Real Estate
Proceeds from sale of other real estate owned
Long-Term Federal Home Loan Bank Advances
Long-Term Federal Home Loan Bank Advances, Total
Federal Home Loan Bank advances
Federal Home Loan Bank advances, Carrying Amount
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Other, net, Amount
Collateral Held [Axis]
Cash and Due from Banks, Total
Cash and due from banks
Cash and Due from Banks
Cash due from Avidia Bank
Financing Receivable, Past Due [Table Text Block]
Summary of Aging Analysis of Past Due Loans By Portfolio Segment
Premises and Equipment
Property, Plant and Equipment, Policy [Policy Text Block]
Regulatory Capital Requirements under Banking Regulations [Text Block]
Minimum Regulatory Capital Requirements
Tax Credit Investments [Policy Text Block]
Tax credit investments.
Tax Credit Investments
Statistical Disclosure for Banks [Abstract]
Entity Address, City or Town
Summary of Changes to Mortgage Servicing Rights [Table Text Block]
Summary of changes to mortgage servicing rights.
Summary of Changes to Mortgage Servicing Rights
Cash, FDIC Insured Amount
Cash, FDIC insured amount
Security Exchange Name
Deposits
Interest Expense, Deposits
Interest Expense, Deposits, Total
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Other, net
Property, Plant and Equipment, Gross
Property, Plant and Equipment, Gross, Ending Balance
Property, Plant and Equipment, Gross, Beginning Balance
Property, Plant and Equipment, Gross, Total
Total premises and equipment
Noninterest Expense [Abstract]
Non-interest expense:
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current tax provision:
Common Equity Tier 1 Risk-Based Capital, Minimum to be well capitalized under prompt corrective action provisions amount
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Well Capitalized, Minimum
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
(Loss) income before income tax (benefit) expense
Loss before income taxes and equity in undistributed net income of subsidiary
Deposits, Savings Deposits
Regular and other savings
Financing Receivable, Net Deferred Loan Costs
Financing receivable, net deferred loan costs.
Net deferred loan costs
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration]
Finance Lease, Liability, to be Paid, Year Five
2030
Accrued interest receivable fair value disclosure
Accrued interest receivable fair value disclosure.
Accrued interest receivable, Fair Value
Financing Receivable, Modified, after 12 Months
Total Past Due
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax
Unrealized holding loss
Financial Asset, Not Past Due [Member]
Current
Interest paid on deposits and borrowed funds
Interest Paid, Excluding Capitalized Interest, Operating Activity
Statistical Measurement [Domain]
Residential [Member]
Residential.
Residential
Residential Real Estate
Share-Based Payment Arrangement, Expense
Expense plan amounted
Document Period End Date
Time Deposits, Weighted Average Interest Rate, Maturities Year Four
Over 3 years to 4 years, weighted average rate
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value
Over 10 years
Fair Value Hierarchy and NAV [Domain]
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year
2021
Debt Securities, Held-to-Maturity, Fair Value, Rolling Maturity [Abstract]
Held to Maturity, Fair Value
Defined Contribution Plan, Cost
401(k) Plan expense
ICFR Auditor Attestation Flag
Loan Servicing
Transfers and Servicing of Financial Assets, Policy [Policy Text Block]
Loans held for sale [Member]
Loans held for sale.
Loans Held for Sale
Credit Loss Status [Domain]
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year
Prior
Debt Instrument, Description of Variable Rate Basis
Interest rate, description
Statement of Financial Position [Abstract]
Schedule of Income Taxes Paid Net
Schedule of income taxes paid net.
Individual analyzed loans [Member]
Individual analyzed loans.
Individual Analyzed Loans
Debt Securities, Available-for-Sale, Realized Loss
Gross realized losses
Weighted Average Number Of Shares Outstanding
Weighted average number of shares outstanding.
Average number of common shares outstanding
Time Deposits, Weighted Average Interest Rate, Maturities Year Five
Over 4 years to 5 years, weighted average rate
Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value
Over 10 years
Incentive Expense And Bonus Plan
Incentive Expense And Bonus Plan
Incentive expense and bonus plan
Current Income Tax Expense (Benefit)
Total current provision
Debt Securities, Available-for-Sale, Realized Gain (Loss)
Debt Securities, Available-for-Sale, Realized Gain (Loss), Total
Net loss on sale of securities available for sale
Net loss on sale of securities avaiable for sale
Net loss on sale of securities available for sale
Reclassification Adjustment For Losses Realized In Income
Reclassification adjustment for losses realized in income.
Reclassification adjustment for losses realized in income
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Telecommunications
Telecommunications.
Advance from Federal Home Loan Bank
Total FHLB advances, amount
Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract]
Finance Leases
Not Designated as Hedging Instrument [Member]
Derivatives Not Designated as Hedging Instruments:
Financial Asset, Aging [Domain]
Increase (Decrease) in Deposits
Increase (Decrease) in Deposits, Total
Net change in deposits
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Liabilities
Total liabilities
Financial Instruments [Domain]
Other Comprehensive Income (Loss), Net (Loss) Gain On Derivatives During Period, Tax
Other comprehensive income (loss), net (loss) gain on derivatives during period, tax.
Tax effect
Payments To Purchase Of Common Shares By E S O P
Payments to purchase of common shares by ESOP.
Purchase of common shares by the ESOP
Partnership investments
Deferred Tax Assets, Investments
Stock Issued During Period Value New Issues To Charitable Foundation
Stock issued during period value new issues to charitable foundation.
Issuance of common shares donated to Avidia Bank Charitable Foundation
Schedule of Fair Value, off-Balance-Sheet Risks [Table Text Block]
Off-Balance-Sheet Financial Instruments Related to Credit Risk
Depreciation and amortization
Deferred Tax Liabilities, Depreciation and amortization
Deferred Tax Liabilities, Depreciation and amortization.
Depreciation and amortization
Dilutive Securities, Effect on Basic Earnings Per Share
Dilutive Securities, Effect on Basic Earnings Per Share, Total
Dilutive securities
Lessee, Operating Lease, Liability, to be Paid, Year Two
2027
Derivative Instruments, Gain (Loss) [Line Items]
Financing Receivable Credit Quality Indicators [Table Text Block]
Summary Risk Ratings Within Loan Portfolio and Current Period Charge-offs, By Loan Segment and Origination Year
Advertising Expense
Advertising
Financing Receivable, Modified [Table]
Finance Lease, Right-of-Use Asset, Amortization
Amortization of right-of-use asset
Off-balance-sheet financial instruments related to credit risk
Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability
Financing Receivable, Modified, Subsequent Default [Table Text Block]
Schedule of Amortized Cost Basis of Loans Payment Default and Modified in Prior 12 Months
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
Less Than Twelve Months
Stock Issued During Period, Shares, Employee Stock Ownership Plan
ESOP shares
Stock issued under employee stock ownership plan
Unadvanced Construction Loans [Member]
Unadvanced Construction Loans
Unadvanced construction loans.
Weighted Average Number of Shares Outstanding, Diluted
Weighted Average Number of Shares Outstanding, Diluted, Total
Diluted
Average number of diluted shares outstanding
Entity File Number
Related Party Deposit Liabilities
Deposits from related parties
Bank-owned Life Insurance
Bank-owned Life Insurance [Policy Text Block]
Bank-owned life insurance.
Other assets
Other Assets
Other Assets, Total
Financing Receivable, Excluding Accrued Interest, Nonaccrual
Total Non-accrual
Total Nonaccrual
Cover [Abstract]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Amortized Cost
After 5 years through 10 years
Total loans payment default on amortized cost basis
Financing Receivable, Modified, Subsequent Default
Percentage Of Common Stock Subscribed For Employee Stock Ownership Plan In Connection With The Conversion
Percentage of common stock subscribed for employee stock ownership plan in connection with the conversion.
Total Risk-Based Capital:, Minimum capital requirement ratio
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum
Subordinated Debt [Member]
Subordinated Debt Securities
Other Business [Member]
Other Business.
Other Business
Net unrealized loss on securities available for sale
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax
Reclassification adjustment for losses realized in income
Financial Asset, Aging [Axis]
Investments [Domain]
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance
Allowance for credit losses on securities
Principles of Consolidation and Nature of Operations
Principles of Consolidation and Nature of Operations [Policy Text Block]
Principles of consolidation and nature of operations.
Total securities
Securities Borrowed 1
Securities borrowed.
Vehicle Financing
Vehicle Financing [Member]
Vehicle Financing.
Carrying Value of Investment Securities Pledged as Collateral
Carrying value of investment securities pledged as collateral.
Carrying value of investment securities pledged as collateral
Sale of Stock [Domain]
Collateralized Mortgage-Backed Securities [Member]
Mortgage-backed Securities
Standby Letters of Credit [Member]
Standby Letters of Credit
Unused lines of Credit [Member]
Unadvanced Lines of Credit
Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities
Maturities, principal payments, and calls
Loans
Loans [Policy Text Block]
Loans.
Participating Mortgage Loans, Mortgage Obligations, Amount
Aggregate amount of mortgage loans for participants
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year
2022
Stock Issued During Period, Shares, Other
Common stock issued to Avidia Bank Charitable Foundation, shares
Non-Certificate Deposits
Non-Certificate deposits.
Total non-certificate accounts
Cash Provided by (Used in) Investing Activity, Continuing Operation [Abstract]
Cash flows from investing activities:
ESOP Compensation expense
Employee Stock Ownership Plan (ESOP), Compensation Expense
Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum
Total Risk-Based Capital:, Minimum to be well capitalized under prompt corrective action provisions ratio
Loan Amount Repayment Period
Loan amount repayment period.
Loan amount repayment period
Home Equity And Second Mortgages [Member]
Home Equity And Second Mortgages.
Home Equity and Second Mortgages
New Accounting Pronouncements, Policy [Policy Text Block]
Recently Adopted Accounting Standards
Subordinated debt
Subordinated Debt, Ending Balance
Subordinated Debt, Beginning Balance
Subordinated Debt, Total
Subordinated debt, issued amount
Subordinated notes
Derivative Instruments, Gain (Loss) [Table]
Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value
After 1 year through 5 years
Investment commissions
Investment Commissions
Investment commissions.
Home Equity and Consumer Loans [Member]
Home Equity and Consumer Loans.
Home Equity and Consumer Loans
Comprehensive Income (Loss) Note [Text Block]
Accumulated Other Comprehensive Loss
Deferred Tax Asset, Tax Deferred Expense, Reserve and Accrual, Financing Receivable, Allowance for Credit Loss
Allowance for credit losses
Financing Receivable, Modified, Commitment to Lend
Additional commitments to the borrowers
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]
Summary of Significant Accounting Policies
Common Stock, Shares, Outstanding
Balances at beginning of period, Shares
Balances at end of period, Shares
Common stock, outstanding
Cybersecurity Risk Management Processes Integrated [Flag]
Document Transition Report
Deferred Tax Assets, Net
Net deferred tax asset
Net deferred tax asset
Short-Term Investments
Short-Term Investments, Total
Short-term investments
Derivative Instrument Detail [Abstract]
Real Estate Loan [Member]
Residential Real Estate Loans
Securities Held to Maturity, Fair Value
Total, fair value
Securities held to maturity, at amortized cost, fair value
Impairment on securities
Asset Impairment Charges
Asset Impairment Charges, Total
Changes in Fair Value of Mortgage Servicing Rights
Changes in fair value of mortgage servicing rights.
Changes in fair value
Changes in fair value
Receivable [Domain]
Valuation Technique, Discounted Cash Flow [Member]
DCF Method
Time deposit weighted average interest rate.
Time deposit, weighted average interest rate
Total, weighted average interest rate
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of the Federal and State Income Tax Provision (Benefit) Between Current and Deferred Portions
Statement of Cash Flows [Abstract]
Employee Stock Ownership Plan ("ESOP")
Employee Stock Ownership Plan (ESOP), Policy [Policy Text Block]
Schedule of Interest Rate Derivatives [Table Text Block]
Schedule of Derivatives Recorded
Current Federal Tax Expense (Benefit)
Federal
Stock Issued During Period, Value, New Issues
Proceeds from isuance of common stock
Proceeds from stock offering and issuance of common shares (net of costs of $5,936)
Financing Receivable, Nonaccrual [Line Items]
Condensed Balance Sheet Statement [Table]
Interest Rate Swap [Member]
Interest Rate Swaps
Accounts and Financing Receivables [Table]
Earnings Per Share [Text Block]
Earnings Per Share
Deferred Tax Liabilities, Other
Other
Other
Cybersecurity Risk Management Processes Integrated [Text Block]
Net (loss) income
Net (loss) income
Institutional Investors [Member]
Institutional investors.
Institutional Investors
Debt and Equity Securities, Gain (Loss)
Debt and Equity Securities, Gain (Loss), Total
Net recognized gain on equity securities
Operating Lease, Cost
Operating lease cost
Dental Commercial and Industrial [Member]
Dental Commercial and Industrial.
Dental Commercial & Industrial
Dental C&I
Income Tax Contingency [Line Items]
Residential Real Estate Portfolio Segment [Member]
Residential real estate portfolio segment.
Residential Real Estate
Residential
Liability for Uncertainty in Income Taxes, Current
Uncertain tax positions
Operating Lease, Payments
Operating cash flows from operating leases
PPP Loans [Member]
PPP Loans
PPP Loans.
Loans
Loans [Member]
Assets:
Assets [Abstract]
Assets
Federal Home Loan Bank Stock
Federal Home Loan Bank stock, at cost
Federal Home Loan Bank stock, Carrying Amount
Construction in Progress [Member]
Construction in Process
Document Fiscal Year Focus
Financing Receivable, Modified [Table Text Block]
Summary of Amortized Cost Basis of Loans Experiencing Financial Difficulty and Modified By Class and By Type of Modification
Noncash Contribution Expense
Charitable contribution expense
Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Fair Value
After 5 years through 10 years
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Schedule of Components of Accumulated Other Comprehensive Loss
Other Assets [Member]
Included in Other Assets:
Condensed Cash Flow Statement [Table]
Operating And Finance Lease Right Of Use Asset Amortization
Operating and finance lease right of use asset amortization.
Amortization of right of use assets
Cash flows from investing activities:
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum
Tier 1 Leverage Capital:, Minimum to be well capitalized under prompt corrective action provisions ratio
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Investment Securities
Fair Value, off-Balance-Sheet Risk [Table]
Plan matching contributions
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Deferred Federal Income Tax Expense (Benefit)
Federal
Stock Conversion Description [Axis]
Subordinated Borrowing [Table]
Unrealized Gain (Loss) on Investments [Table Text Block]
Summary of Securities in an Unrealized Loss Position
Plan Of Conversion [Member]
Plan of conversion.
Plan of Conversion
Passbook CD Loans [Member]
Passbook CD Loans.
Passbook CD Loans
Allowance for Credit Losses [Member]
Allowance for credit losses.
Allowance for Credit Losses
Fees and Commissions, Mortgage Banking and Servicing
Mortgage banking income
Fair Value Disclosures [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Other
Other Debt Obligations [Member]
Gross Charge Offs [Member]
Gross Charge Offs.
Gross Charge Offs
Time Deposits, Weighted Average Interest Rate, Maturities Year Two
Over 1 year to 2 years, weighted average rate
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Tax credits (net of ammortization), Amount
Effective Income Tax Rate Reconciliation, Tax Credit, Amount
Effective Income Tax Rate Reconciliation, Tax Credit, Amount, Total
Tax credits (net of ammortization), Amount
Lessee, Operating Lease, Liability, to be Paid, Year One
2026
Interest Rate Swaps Related to FHLB Advances and Agency Security
Interest Rate Swaps Related to FHLB Advances and Agency Security [Member]
Interest rate swaps related to FHLB advances and agency security.
Derivative Instrument [Axis]
Lessee, Operating Lease, Liability, to be Paid, after Year Five
Thereafter
Deposit Liabilities Disclosures [Text Block]
Deposits
Impairment loss on securities
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Impairment Losses
Assets, Fair Value Disclosure, Total
Total included in other assets, Fair Value
Total
Total assets
Sale of Stock [Axis]
Debt Instrument, Fair Value Disclosure
Debt Instrument, Fair Value Disclosure, Total
Debt outstanding
Subordinated Debt, Fair Value
Banking Regulation, Regulatory Capital Requirement, Compliance [Table]
Employee Stock Ownership Plan (ESOP), Debt Structure, Direct Loan, Amount
Amount borrowed under ESOP
Increase (Decrease) in Income Taxes Receivable
Increase in income tax receivable
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash used by investing activities
Mortgage Servicing Rights
Mortgage servicing rights.
Mortgage servicing rights
MSRs, Carrying Amount
Beginning balance
Ending balance
Effective Income Tax Rate Reconciliation, Deduction, Dividend, Percent
Dividends received deduction
Dividends received deduction
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Abstract]
Pass [Member]
Pass
Finance Lease, Weighted Average Remaining Lease Term
Weighted-average remaining lease term (in years) Finance leases
Title of 12(b) Security
Percentage of Advances Interest Rate
Percentage of advances interest rate.
Percentage of advances interest rate
Loss Per Common Share [Abstract]
Loss per common ahare.
Loss per common share:
Income loss from continuing operations after income taxes and before equity in undistributed net income of subsidiary
Income loss from continuing operations after income taxes and before equity in undistributed net income of subsidiary.
Loss before equity in undistributed net income of subsidiary
Financing Receivable, Modified, Past Due [Line Items]
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Derivative Financial Instruments
Term certificate accounts less than $250,000
Term certificate accounts less than $250,000.
Income Tax Paid, by Individual Jurisdiction [Table]
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Life Insurance, Amount
Bank-owned life insurance, Amount
Bank-owned life insurance, Amount
Income Taxes
Income Tax Disclosure [Text Block]
Securities available-for-sale, allowance for credit loss
Debt Securities, Available-for-Sale, Allowance for Credit Loss
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Ending Balance
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Beginning Balance
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Total
Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum
Total Risk-Based Capital:, Minimum capital requirement amount
Consolidated Entities [Axis]
Finance Lease, Right-of-Use Asset, after Accumulated Amortization
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total
Finance leases
Overdraft and Unsecured [Member]
Overdraft and Unsecured.
Overdraft and Unsecured
Cash reserves from purchase price adjustments
Cash reserves from purchase price adjustments.
Cash reserves from purchase price adjustments
Condensed Balance Sheet Statements, Captions [Line Items]
Property, Plant and Equipment [Table Text Block]
Summary of Cost and Accumulated Depreciation and Amortization of Premises and Equipment
Time Deposits
Term certificate accounts
Time Deposit Maturities, Year Three
Over 2 years to 3 years
Income Tax Disclosure [Abstract]
Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum
Tier 1 Leverage Capital:, Minimum capital requirement ratio
Fair Value, Recurring and Nonrecurring [Table]
Subordinated Borrowings Disclosure [Text Block]
Subordinated Debt
Additional Paid-in Capital [Member]
Additional Paid-In Capital
Banking Regulation, Total Risk-Based Capital Ratio, Actual
Total Risk-Based Capital:, Actual ratio
Measurement Frequency [Domain]
Mortgage Servicing Rights Prepayment Speed Percentage
Mortgage servicing rights prepayment speed percentage.
Mortgage servicing rights prepayment speed percentage
Trading Symbol
Property, Plant and Equipment Disclosure [Text Block]
Premises and Equipment
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Attributable to Parent
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Attributable to Parent, Total
Income tax expense benefit associated with adjustment
Tier 1 Risk-Based Capital: Minimum to be well capitalized under prompt corrective action provisions ratio
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum
Mortgage Loans in Process of Foreclosure, Amount
Loans in process of foreclosure, amount
ESOP expense
Increase Decrease In E S O P Expense
Increase decrease in ESOP expense.
Tax exempt income, Amount
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount
Tax exempt income, Amount
Financing Receivable, Allowance for Credit Loss [Table Text Block]
Schedule of Allowance for Credit Losses by Portfolio Segment
Operating Lease, Liability [Abstract]
Operating lease expense:
Operating and Finance Lease Liability Maturity [Table Text Block]
Operating and Finance Lease Liability Maturity.
Future Undiscounted Lease Payments
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Cash flows from financing activities:
Fair Value, Recurring [Member]
Fair Value, Recurring
Entity Ex Transition Period
Subordinated Borrowings [Abstract]
Lessee, Operating Lease, Liability, to be Paid
Total undiscounted lease payments
Debt Securities, Available-for-Sale, Unrealized Loss Position [Abstract]
Fair Value
Employee Stock Ownership Plan (ESOP), Number of Committed-to-be-Released Shares
Shares committed to be released
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Less: imputed income
Less: imputed interest
Purchase of common shares by the ESOP (1,606,100 shares)
Stock Issued During Period, Value, Employee Stock Ownership Plan
Purchase of common shares by the ESOP (1,606,100 shares)
Financing Receivable Portfolio Segment [Domain]
Proceeds from Sale and Maturity of Held-to-Maturity Securities [Abstract]
Securities held to maturity
Total lease liabilities
Operating and finance lease liability
Operating and finance lease liability.
Securities
Interest and Dividend Income, Securities, Operating
Interest and Dividend Income, Securities, Operating, Total
Securities or Other Assets Sold under Agreements to Repurchase [Axis]
Conversion of Stock, Name [Domain]
Equity Components [Axis]
Municipal Securities Member
Municipal securities.
Municipal Securities
Loan To Value Ratio
Loan to value ratio.
Loan-to-value ratio
Deferred Tax Liabilities, Swap
Deferred Tax Liabilities, Swap.
Swap
Swap
Construction and Land [Member]
Construction and land.
Construction & Land
Construction and Land
Equity Component [Domain]
Asset Class [Axis]
Sales of Securities Available for Sale
Sales of securities available for sale.
Sales of securities available for sale
State and Local Tax Jurisdiction, Other [Member]
Other States
Federal Home Loan Bank Advances, Disclosure [Text Block]
Federal Home Loan Bank Advances and Other Borrowings
Equity Securities, FV-NI [Abstract]
Equity securities
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling within One Year
Within 1 year
Document Annual Report
Bank Owned Life Insurance
Bank-owned life insurance
Bank-owned life insurance, Carrying Amount
Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy, Minimum
Tier 1 Risk-Based Capital:, Minimum capital requirement amount
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Financing Receivable, Excluding Accrued Interest, Revolving
Revolving Loans
IPO [Member]
IPO
Subsidiaries [Member]
Bank
Other Interest and Dividend Income
Other
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum
Common Equity Tier 1 Risk-Based Capital, Minimum to be well capitalized under prompt corrective action provisions ratio
Depreciation, Depletion and Amortization, Nonproduction
Depreciation, Depletion and Amortization, Nonproduction, Total
Depreciation and amortization of premises and equipment
Federal Home Loan Bank Borrowings [Member]
Federal Home Loan Bank
Statement of Comprehensive Income [Abstract]
Maximum
Maximum [Member]
Liabilities, fair value
Liabilities, Fair Value Disclosure, Total
Total included in other liabilities, Fair Value
Total liabilities
Designated as Hedging Instrument [Member]
Derivatives Designated as Hedging instruments
Derivatives Designated as Hedging Instruments:
Statistical Measurement [Axis]
Time Deposit Maturities, Year One
Within 1 year
Employee Stock Ownership Plan (ESOP) Name [Axis]
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year
2023
Common stock, $0.01 par value, 120,000,000 shares authorized, 20,076,250 shares issued and outstanding in 2025; no shares issued and outstanding in 2024
Common Stock, Value, Issued
Federal Home Loan Bank, Advances, Maturities Summary, Due in Rolling Year Two
Over 1 year to 2 years, amount
Finance Lease, Principal Payments
Financing cash flows from finance leases
Financing Receivable, Allowance for Credit Loss [Table]
Federal Home Loan Bank, Advance, Maturity, Average Interest Rate, after Year Five
Total FHLB advances, weighted average rate
Income Tax Contingency [Table]
Debt Securities, Available-for-Sale, Realized Gain
Gross realized gains
Mortgage Servicing Rights Discount Rate Percentage
Mortgage servicing rights discount rate percentage.
Mortgage servicing rights discount rate percentage
Bank Owned Life Insurance Income
Increase in cash surrender value of bank-owned life insurance
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Long-lived Assets
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year
2025
Commercial And Industrial Loans Portfolio Segment [Member]
Commercial and industrial loans portfolio segment.
Commercial and Industrial Loans
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
State taxes, net of federal tax benefit
Amortization of Debt Issuance Costs
Amortization of subordinated debt issuance costs
Commercial And Industrial [Member]
Commercial and Industrial.
Commercial & Industrial
Time deposits, at 250 thousand or above FDIC insurance limit
Time Deposits, at or Above FDIC Insurance Limit
Entity Public Float
Cash Flow Hedge [Abstract]
Cash flow hedge.
Cash flow hedge:
Increase (Decrease) in Advance Payments by Borrowers for Taxes and Insurance
Net change in mortgagors' escrow accounts
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss
Total
Total
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value
Total securities with defined maturities, fair value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Entity Registrant Name
Federal Home Loan Bank, Advance, Maturity, Average Interest Rate, Year One
Within 1 year, weighted average rate
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Securities Available for Sale, Gross Unrealized Losses
Entity Voluntary Filers
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount
Total
Lessee Disclosure [Abstract]
Additional Paid in Capital
Additional Paid in Capital, Total
Deferred State and Local Income Tax Expense (Benefit)
State
Other Comprehensive Income (Loss), Net (Loss) Gain On Derivatives During Period, Before Tax
Other comprehensive income (loss), net (loss) gain on derivatives during period, before tax.
Net (loss) gain on swaps
Cybersecurity Risk Management Positions or Committees Responsible [Flag]
Conversion and Stock Offering Cost Incurred
Conversion and stock offering cost incurred.
Costs related to conversion and stock offering
Consolidated Entities [Domain]
Income tax (benefit) expense
Total tax (benefit) expense
Income tax (benefit) expense, Amount
Income tax benefit
Debt Securities, Available-for-Sale, Gain (Loss)
Debt Securities, Available-for-Sale, Gain (Loss), Total
Net loss on sale of securities available for sale
Employee Stock Ownership Plan (ESOP), Number of Suspense Shares
Unallocated shares
ACL on off-balance sheet credit exposures
Off-Balance-Sheet, Credit Loss, Liability
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance
Measurement Frequency [Axis]
Proceeds from Issuance of Common Stock
Net proceeds from stock offering and issuance of common shares
Commercial Real Estate Multifamily [Member]
Commercial Real Estate Multifamily.
Commercial Real Estate Multifamily
Entity Common Stock, Shares Outstanding
Remaining lease term
Lessee, Operating Lease, Remaining Lease Term
Liability Class [Axis]
Subordinated debt earlier prepayment permitted period description
Subordinated debt earlier prepayment permitted period description.
Subordinated debt earlier prepayment period description
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Consolidation Items [Axis]
Commercial Real Estate Portfolio Segment [Member]
Real Estate Loans
Banking Regulation, Capital Conservation Buffer, Tier 1 Risk-Based Capital, Actual
Capital conservation buffer of common equity Tier 1 capital in an amount
Payments to Acquire Property, Plant, and Equipment
Payments to Acquire Property, Plant, and Equipment, Total
Purchases of premises and equipment
Assets
Total assets
Property, Plant and Equipment [Table]
Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Rolling 12 Months
Within 1 year, amount
Federal Home Loan Bank, Advance, Maturity, Average Interest Rate, Year Two
Over 1 year to 2 years, weighted average rate
Income Tax Paid, State and Local, after Refund Received
Income Tax Paid, State and Local, after Refund Received, Total
States
Class of Financing Receivable [Domain]
Income Statement [Abstract]
Defined Benefit Plan [Abstract]
Financing Receivable, Past Due [Line Items]
Finance Lease, Interest Payment on Liability
Operating cash flows from finance leases
Federal Home Loan Bank, Advances [Table Text Block]
Summary of FHLB
Financing receivables unpaid 120 days or more [Member]
Financing receivables unpaid 120 days or more.
Financing Receivables Unpaid 120 Days or More
Deferred Income Tax Expense (Benefit)
Total deferred benefit
Deferred income tax benefit
Net recognized gains on equity securities
Equity Securities, FV-NI, Realized Gain (Loss)
Equity Securities, FV-NI, Realized Gain (Loss), Total
Gain (Loss) on Sales of Loans, Net
Gain (Loss) on Sales of Loans, Net, Total
Gain on sale of loans
Stock Issued During Period, Shares, New Issues
Common stock issued
Proceeds from stock offering and issuance of common shares (net of costs of $5,936), Shares
Payment Processing
Payment processing.
Payment processing
Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum
Tier 1 Leverage Capital: Minimum capital requirement amount
Earnings Per Share, Diluted
Earnings Per Share, Diluted, Total
Diluted
Lease Balance Sheet Disclosure [Table Text Block]
Tabular disclosure of lease balance sheet disclosure.
Summary of Classification of ROU Assets and Lease Liabilities on Consolidated Balance Sheets
Subordinated Borrowing [Line Items]
Operating Segments [Member]
Banking Regulation, Capital Conservation Buffer [Abstract]
Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value
Available-for-sale debt securities, fair value
City Area Code
Payment Delay and Term Extension [Member]
Payment delay and term extension.
Combination Payment Delay and Term Extension
Other Comprehensive Income (Loss), Net of Tax
Other comprehensive income
Financing Receivable, Credit Loss, Expense (Reversal)
Expense to credit loss
Credit loss expense - loans
Auditor Name
Deposits
Deposits
Total deposits
Deposits, other than certificates of deposit, Carrying Amount
Schedule of Impact of Segment Update to Loan Portfolio and Allowances for Credit Loss [Table Text Block]
Schedule of impact of segment update to loan portfolio and allowances for credit loss.
Schedule of Impact of Segment Update to Loan Portfolio and ACL
Commercial Real Estate [Member]
Commercial Real Estate
Income Tax Examination, Penalties and Interest Expense
Income Tax Examination, Penalties and Interest Expense, Total
Interest or penalties recorded
Financial Asset, Past Due [Member]
Total Past Due
Defined Benefit Plan [Table]
Interest and Fee Income, Loans and Leases
Interest and Fee Income, Loans and Leases, Total
Loans, including fees
Consumer Credit Card
Consumer Credit Card [Member]
Consumer Credit Card.
Bank-owned life insurance
Effective Income Tax Rate Reconciliation, Bank Owned Life Insurance, Percent
Effective income tax rate reconciliation, bank owned life insurance, percent.
Bank-owned life insurance
Variable Lease, Cost
Variable lease cost
Total lease cost, net
Finance Lease, Cost
Finance lease, cost.
Loan, Held-for-Sale, Fair Value Disclosure
Loans held for sale, Fair Value
Operating Lease, Weighted Average Remaining Lease Term
Weighted-average remaining lease term (in years) Operating leases
Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Policy [Policy Text Block]
Transfers of Financial Assets
Time Deposit Maturities, Year Two
Over 1 year to 2 years
Lease, Cost
Total lease cost, net
Weighted Average Number of Shares, Employee Stock Ownership Plan Shares Not Committed to be Released
Less: average unallocated ESOP shares
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and Cash Equivalents
Accrual of interest on loans discontinued period
Accrual of Interest on Loans Discontinued Period
Accrual of interest on loans discontinued period.
Property, Plant and Equipment, Net
Premises and equipment, net
Net premises and equipment
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Goodwill
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Capital Adequacy, Minimum
Common Equity Tier 1 Risk-Based Capital, Minimum capital requirement amount
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Cash and due from banks at beginning of year
Cash and due from banks at end of year
Corporate Bond Securities [Member]
Corporate Bonds
Retained Earnings
Retained Earnings [Member]
Payments of Stock Issuance Costs
Net of issuance costs
Other
Noninterest Income, Other Operating Income
Conversion and Change in Corporate Form
Conversion and Change in Corporate Form [Policy Text Block]
Conversion and change in corporate form.
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months
Less Than Twelve Months
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Fair Value
After 5 years through 10 years
Operating Lease, Weighted Average Discount Rate, Percent
Weighted-average discount rate, Operating leases liabilities
Level 1
Fair Value, Inputs, Level 1 [Member]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash provided by financing activities
Collateral Held [Domain]
Subordinated debt interest expense amortization period
Subordinated debt interest expense amortization period.
Debt issuance costs amortized to interest expense period
Lease, Cost [Table Text Block]
Components of Lease Expense for Operating and Finance Leases
Auditor Location
Federal Home Loan Bank Borrowings, Fair Value Disclosure
Federal Home Loan Bank advances, Fair Value
Director and Executive Retirement Plans [Member]
Director and executive retirement plans.
Director and Executive Retirement Plans
Marketable Securities [Table Text Block]
Summary of Amortized Cost and Fair Value of Securities Available for Sale and Held to Maturity, With Gross Unrealized Gains and Losses
Derivative Contract [Domain]
Unearned ESOP Shares
Unallocated ESOP common stock
Unallocated ESOP common stock
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax
Tax effect
Condensed Cash Flow Statement [Table Text Block]
Condensed Statements of Cash Flows
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum
Common Equity Tier 1 Risk-Based Capital, Minimum capital requirement ratio
Time Deposits, Weighted Average Interest Rate, Maturities Year One
Within 1 year, weighted average rate
Federal Home Loan Bank Stock
Federal Home Loan Bank Stock [Policy Text Block]
Federal home loan bank stock.
Line of Credit Assumed
Line of credit
Income Tax Jurisdiction [Domain]
Financing Receivable, Modified [Line Items]
Debt Securities, Available-for-Sale [Table]
Entity Interactive Data Current
Financing Receivable Written Down Collectible Amount Period
Financing receivable written down collectible amount period.
Financing receivable written down collectible amount period
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year
2024
Customer service fees
Customer Service Fees
Customer service fees.
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Cash flows from operating activities:
Furniture and Fixtures [Member]
Furniture and Equipment
Repayments of Lines of Credit
Line of credit available
Time Deposits, Weighted Average Interest Rate, Maturities Year Three
Over 2 years to 3 years, weighted average rate
Effective Income Tax Rate Reconciliation, Deduction, Dividends, Amount
Dividends received deduction, Amount
Dividends received deduction, Amount
Loan Restructuring Modification [Domain]
Payment Delay and Principal Re Advance [Member]
Payment delay and principal re-advance.
Combination Payment Delay and Principal Re- Advance
Accretion (Amortization) of Discounts and Premiums, Investments
Net amortization of securities
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Total
Securities held to maturity, at amortized cost (fair value $12,601 in 2025 and $16,630 in 2024)
Banking Regulation, Total Capital, Actual
Total Risk-Based Capital:, Actual
Effective Income Tax Rate Reconciliation, Bank Owned Life Insurance, Amount
Effective income tax rate reconciliation, bank owned life insurance, amount.
Bank-owned life insurance
Residential Mortgage [Member]
Residential Mortgage Loan Commitments
Entity Tax Identification Number
Land [Member]
Land
Accounts Payable and Accrued Liabilities, Fair Value Disclosure
Accounts Payable and Accrued Liabilities, Fair Value Disclosure, Total
Accrued interest payable, Fair Value
Condensed Income Statement [Table]
Percentage of Loan Guaranteed
Percentage of loan guaranteed.
Percentage of loan guaranteed
Maturities, principal payments, calls and sales
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale
Deferred tax liaility not provided to absorb loan losses
Deferred tax liaility not provided to absorb loan losses.
Impact of methodology change
Financing Receivable, Change in Method, Credit Loss Expense (Reversal)
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Loans and Allowance for Credit Losses
Federal Home Loan Bank, Advance, Maturity, Average Interest Rate, Year Three
Over 2 years to 3 years, weighted average rate
Local Phone Number
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value
After 1 year through 5 years
Solar [Member]
Solar.
Solar
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average common shares outstanding:
Auditor Opinion [Text Block]
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value
Within 1 year
Finance Lease, Liability, to be Paid, Year Two
2027
Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Fair Value, Rolling Maturity [Abstract]
Held to Maturity, Amortized Cost
Federal Deposit Insurance Corporation Premium Expense
Deposit insurance
Total non-interest expense
Noninterest Expense
Non-interest expense
Consumer Loan [Member]
Consumer
Customer Loans
Financing Receivable, Credit Quality Indicator [Table]
Accounting Policies [Abstract]
Certificates of deposit
Certificates of deposit.
Certificates of deposit, Carrying Amount
Federal Home Loan Bank, Advance
Federal Home Loan Bank, Advance, Total
Advance outstanding
Disclosure of Impact by Segment [Table Text Block]
Disclosure of impact by segment.
Summary of Impact by Segment
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost
Within 1 year
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling after One through Five Years
After 1 year through 5 years
Lessee, Operating Lease, Liability, to be Paid, Year Four
2029
Labor and Related Expense
Salaries and employee benefits
All Business Assets [Member]
All business assets.
All Business Assets
Cash, Cash Equivalents, and Short-Term Investments
Total cash and cash equivalents
Cash and due from banks, Carrying Amount
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent
Employee's compensation
Entity Emerging Growth Company
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Gross Unrealized Losses