Allowance for Credit Losses - Schedule of Amortized Cost Basis of Loan Modifications Made to Borrowers Experiencing Financial Difficulty (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2026 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	10
Amortized Cost	$ 18,558
Commercial Real Estate Relationship \| Maturity Extension:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	1
Amortized Cost	$ 135
% of Total Class of Loans and Leases	0.00%
Term increase from modification	5 years
Commercial Real Estate Relationship \| Significant Payment Delays:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	1
Amortized Cost	$ 243
% of Total Class of Loans and Leases	0.00%
Payment deferral period	180 days
Commercial Real Estate Relationship \| Combination - Maturity Extension and Significant Payment Delays
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	1
Amortized Cost	$ 8,668
% of Total Class of Loans and Leases	0.12%
Term increase from modification	6 months
Financing receivable, modified, weighted average interest rate decrease from modification	2.50%
Commercial Real Estate Relationship \| Combination - Significant Payment Delays and Interest Rate Reduction:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	1
Amortized Cost	$ 2,907
% of Total Class of Loans and Leases	0.04%
Financing receivable, modified, weighted average interest rate decrease from modification	1.89%
Payment deferral period	3 months
Commercial And Industrial Relationships
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost	$ 0
Commercial And Industrial Relationships \| Maturity Extension:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	4
Amortized Cost	$ 5,904
% of Total Class of Loans and Leases	0.20%
Equipment financing \| Combination - Maturity Extension and Significant Payment Delays
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	2
Amortized Cost	$ 701
% of Total Class of Loans and Leases	0.07%
Equipment financing \| Combination - Maturity Extension and Significant Payment Delays \| Loan Tranche One
Financing Receivable, Troubled Debt Restructuring [Line Items]
Term increase from modification	33 months
Financing receivable, modified, weighted average interest rate decrease from modification	2.00%
Equipment financing \| Combination - Maturity Extension and Significant Payment Delays \| Loan Tranche Two
Financing Receivable, Troubled Debt Restructuring [Line Items]
Term increase from modification	15 months
Financing receivable, modified, weighted average interest rate decrease from modification	2.50%

Beacon Financial Corp 10-Q