Document and Entity Information [Abstract] Document Information [Table] Legal Entity [Axis] Entity [Domain] Represents the Retirement Plan Number 004. E B P 004 [Member] 401(K) Plan Document Information [Line Items] Document Type Entity Registrant Name Entity Tax Identification Number Employer identification number Entity Central Index Key Amendment Flag STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS EBP, Statement of Net Asset Available for Benefit [Table] Investment Type [Axis] Investments [Domain] Money Market Funds [Member] Money Market Accounts Money Market Accounts Common Collective Trust [Member] Collective Investment Funds Mutual Fund [Member] Mutual Funds EBP, Employer, Common Stock Fund [Member] Orange County Bancorp, Inc. Stock Fund Common Stock EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Asset [Abstract] ASSETS EBP, Investment, Fair Value [Abstract] Investments, at fair value: EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value Total Investments Fair Value of Orange County Bancorp Inc. common stock owned by the ESOP EBP, Receivable [Abstract] Receivables: EBP, Note Receivable from Participant Notes Received from Participants EBP, Participant Contribution, Receivable Participant contributions EBP, Employer Contribution, Receivable Employer contributions EBP, Receivable Total Receivables EBP, Asset Total Assets EBP, Net Asset Available for Benefit NET ASSETS AVAILABLE FOR BENEFITS END OF YEAR NET ASSETS AVAILABLE FOR BENEFITS BEGINNING OF YEAR NET ASSETS AVAILABLE FOR BENEFITS STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS EBP, Change in Net Asset Available for Benefit, Increase [Abstract] ADDITIONS EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Investment Income: EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Unrealized Gain (Loss) on Investment Net appreciation in fair value investments EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment Dividend and interest income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Total Investment Income EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Interest income on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Participants EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Rollover EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash Employer EBP, Change in Net Asset Available for Benefit, Increase from Contribution Total Contributions EBP, Change in Net Asset Available for Benefit, Increase TOTAL ADDITIONS EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] DEDUCTIONS EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Benefits paid to participants EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease TOTAL DEDUCTIONS EBP, Change in Net Asset Available for Benefit, Increase (Decrease) NET INCREASE DESCRIPTION OF PLAN EBP, Description of Plan [Table] EBP, Description of Plan [Line Items] DESCRIPTION OF PLAN PLAN TERMINATION EBP, Description of Plan [Text Block] DESCRIPTION OF PLAN SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES EBP, Accounting Policy [Table] EBP, Accounting Policy [Line Items] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES EBP, Summary of Accounting Policy [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES TAX STATUS EBP, Tax Status [Table] EBP, Tax Status [Line Items] TAX STATUS EBP, Tax Status [Text Block] TAX STATUS FAIR VALUE MEASUREMENTS EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Line Items] FAIR VALUE MEASUREMENTS EBP, Investment, Fair Value and NAV [Text Block] FAIR VALUE MEASUREMENTS No definition available. ORANGE COUNTY BANCORP INC., STOCK FUND Disclosure of information about employer stock fund. Employee Benefit Plan, Employer, Stock Fund [Table] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Employee Benefit Plan, Employer, Stock Fund [Line Items] ORANGE COUNTY BANCORP INC., STOCK FUND The entire disclosure for employer stock fund in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Employer, Stock Fund [Text Block] ORANGE COUNTY BANCORP INC., STOCK FUND RISKS AND UNCERTAINTIES EBP, Risk and Uncertainty [Table] EBP, Risk and Uncertainty [Line Items] RISKS AND UNCERTAINTIES CONCENTRATIONS EBP, Risk and Uncertainty [Text Block] RISKS AND UNCERTAINTIES No definition available. ADMINISTRATION OF PLAN ASSETS Disclosure of information about administration of plan asset. Employee Benefit Plan, Administration Of Plan Assets [Table] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Employee Benefit Plan, Administration Of Plan Assets [Line Items] ADMINISTRATION OF PLAN ASSETS The entire disclosure for administration of plan assets in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Administration Of Plan Assets [Text Block] ADMINISTRATION OF PLAN ASSETS No definition available. PLAN TERMINATION EBP, Plan Termination [Text Block] PLAN TERMINATION The entire disclosure of concentrations of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Concentrations [Text Block] CONCENTRATIONS RELATED PARTY TRANSACTIONS EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Line Items] RELATED PARTY TRANSACTIONS EBP, Related Party and Party-in-Interest Transactions [Text Block] RELATED PARTY TRANSACTIONS No definition available. NONEXEMPT TRANSACTIONS Disclosure of information about nonexempt items. Employee Benefit Plan, Nonexempt Transactions [Table] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Employee Benefit Plan, Nonexempt Transactions [Line Items] NONEXEMPT TRANSACTIONS The entire disclosure for nonexempt transactions with employee stock purchase, savings, or a similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Nonexempt Transactions [Text Block] NONEXEMPT TRANSACTIONS SCHEDULE OF DELINQUENT PARTICIPANT CONTRIBUTIONS EBP, Schedule of Delinquent Participant Contribution [Table] EBP, Schedule of Delinquent Participant Contribution [Line Items] SCHEDULE OF DELINQUENT PARTICIPANT CONTRIBUTIONS EBP, Schedule of Delinquent Participant Contribution [Text Block] SCHEDULE OF DELINQUENT PARTICIPANT CONTRIBUTIONS SCHEDULE OF ASSETS (HELD AT YEAR END) - SCHEDULE H, PART IV, LINE 4i EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Line Items] SCHEDULE OF ASSETS (HELD AT YEAR END) - SCHEDULE H, PART IV, LINE 4i EBP, Schedule of Asset Held for Investment [Text Block] SCHEDULE OF ASSETS (HELD AT YEAR END) - SCHEDULE H, PART IV, LINE 4i EBP, Basis of Accounting [Policy Text Block] Basis of Accounting EBP, Use of Estimate [Policy Text Block] Use of Estimates Disclosure of accounting policy for income recognition and investment valuation held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Investment Valuation and Income Recognition [Policy Text Block] Investment Valuation and Income Recognition. EBP, Payment to Participant [Policy Text Block] Payment of Benefits. EBP, Note Receivable from Participant [Policy Text Block] Notes Receivable From Participants EBP, Contribution [Policy Text Block] Contributions EBP, Expense [Policy Text Block] Operating Expenses. EBP, Investment, Fair Value and NAV [Table Text Block] Schedule of Plan's Assets Fair Value Hierarchy Tabular disclosure of components of employer stock fund with employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Employer, Stock Fund, Components [Table Text Block] Schedule of components of employer stock fund EBP, Related Party and Party-in-Interest Transactions [Table Text Block] Schedule of ESOP holdings Represents the age to be attained for eligibility under the plan. Employee Benefit Plan, Age For Plan Eligibility Age for Plan eligibility Represents the minimum service period for plan eligibility under employee benefit plan (EBP). Employee Benefit Plan, Minimum Service Period For Plan Eligibility Minimum service period for Plan eligibility Represents the minimum service hours for plan eligibility under employee benefit plan (EBP). Employee Benefit Plan, Minimum Service Hours For Plan Eligibility Minimum service hours for Plan eligibility Represents the age to be attained for Employer Matching Contributions and Discretionary Employer contributions eligibility under employee benefit plan (EBP). Employee Benefit Plan, Age For Employer Matching Contributions And Discretionary Employer Contributions Eligibility Age for Employer Matching and Discretionary Employer contributions eligibility Represents the minimum service hours for Employer Matching Contributions and Discretionary Employer contributions eligibility under employee benefit plan (EBP). Employee Benefit Plan, Minimum Service Hours For Employer Matching Contributions And Discretionary Employer Contributions Eligibility Minimum service hours for Employer Matching and Discretionary Employer contributions eligibility EBP, Participant Contribution, Automatic, Deferral Rate Percentage of participant contribution, automatic deferral rate Percentage of employer safe harbor non-elective contribution in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Employer Safe Harbor Nonelective Contribution, Percentage Percentage of safe harbor employer contribution EBP, Employer Contribution, Participant Compensation Matched, Percentage Percentage of participant eligible compensation Represents the percentage of vesting per year. Employee Benefit Plan, Vesting Percentage, Per Year Vesting percentage, per year Represents the percentage of vesting. Employee Benefit Plan, Vesting Percentage Vesting percentage Represents the period of vesting. Employee Benefit Plan, Vesting Period Vesting period Statistical Measurement [Axis] Statistical Measurement [Domain] Minimum [Member] Minimum Maximum [Member] Maximum EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Note receivable, minimum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Note receivable, maximum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Note receivable, maximum borrowing percentage EBP, Asset Held for Investment, Participant Loan, Interest Rate Loan interest rate Represents the minimum vested balance for automatic rollover in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Minimum Vested Balance For Automatic Rollover Minimum vested balance Represents the maximum vested balance for automatic rollover in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Maximum Vested Balance For Automatic Rollover Maximum vested balance Represents the age to qualify for withdrawal. Employee Benefit Plan, Age For Qualifying Withdrawal Age to qualify for withdrawal EBP, Forfeited Nonvested Account Forfeited non-vested accounts EBP, Forfeited Nonvested Account, Decrease from Administrative Expense Amount of forfeited nonvested accounts used to offset administrative expenses EBP, Tax Determination Letter, Obtained [true false] Determination letter obtained EBP, Tax Determination Letter, Date Determination letter date EBP, Tax Qualification Status [Extensible Enumeration] Tax qualification status Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 1 [Member] Quoted Prices in Active Markets (Level 1) Fair Value, Inputs, Level 2 [Member] Significant Other Observable Inputs (Level 2) Cash Equivalents [Member] Fidelity Institutional Money Market Funds EBP, Employer, Common Stock [Member] Orange County Bancorp, Inc. Stock EBP, Investment, Number of Shares Number of shares Number of Orange County Bancorp, Inc. shares Market value per share or unit of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Value Per Share Or Unit Value per unit Represents the percentage of vesting of participant accounts in the event of plan termination. Employee Benefit Plan, Vesting Percentage In Event of Plan Termination Vesting percentage on termination Number of investment at fair value held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), to net assets available for benefit representing concentration risk at or above applicable threshold. Employee Benefit Plan, Concentration Of Investment, Number Number of investments EBP, Risk and Uncertainty, Concentration of Investment at Fair Value to Net Assets, Percentage Percentage of net assets available for benefits EBP, Related Party and Party-in-Interest [Axis] EBP, Related Party and Party-in-Interest [Domain] Represents the information pertaining to employer. Employee Benefit Plan, Employer [Member] Orange County Bancorp, Inc. Percentage of shares or units of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Investment, Shares Held, Percentage Percentage of Orange County Bancorp Inc. common stock owned by the ESOP EBP, Investment, Excluding Plan Interest in Master Trust, Cost Cost bases of Orange County Bancorp Inc. common stock owned by the ESOP EBP, Investment, Sold, Number of Shares Number of shares sold EBP, Investment Sold, Excluding Plan Interest in Master Trust, Selling Price Fair value of shares sold EBP, Investment, Purchased, Number of Shares Number of shares purchased EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Purchase Price Fair value of shares purchased EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Dividend income Amount of participant contributions and loan repayments that have failed to be deposited within the required time frame of employee stock purchase, savings, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Undeposited Amount Undeposited amount EBP, Plan Number Plan number EBP, Schedule of Delinquent Participant Contribution, Transferred Late to Plan Participant contributions transferred late to plan EBP, Schedule of Delinquent Participant Contribution, Corrected Outside VFCP Contributions corrected outside VFCP Investment, Identifier [Axis] EBP, Investment, Issuer Name [Extensible Enumeration] EBP, Investment, Issuer Name [Extensible Enumeration] EBP, Investment, Current Value, Type [Extensible Enumeration] EBP, Investment, Current Value, Type [Extensible Enumeration] EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Current Value EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Participant Loans EBP, Asset Held for Investment Total Assets under investment with Principal Trust Company EBP, Asset Held for Investment, Party-in-Interest [true false] EBP, Asset Held for Investment, Party-in-Interest [true false] EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]