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Loans and Allowance for Credit Losses - Narrative (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) loan Category category borrower	Dec. 31, 2023 USD ($) loan property borrower	Dec. 31, 2022 USD ($)	Dec. 31, 2024 mortgage	Dec. 31, 2024 loan	Dec. 31, 2024	Dec. 31, 2024 numberOfBank
Activity in the allowance for loan losses [Line Items]
Servicing asset	$ 171,600,000	$ 184,300,000
Foreclosed properties held	2,800,000	$ 800,000
Number foreclosed properties held | property		2
Asset acquisition, consideration transferred	$ 500,000
Number of points in internal risk rating system | category	9
Number of categories in internal risk rating system considered as not criticized | Category	6
Commercial relationship credit review threshold amount	$ 1,000,000
Individually analyzed loans	43,200,000	$ 11,800,000
Individually evaluated for impairment	1,300,000	1,900,000
Provision (release of allowance) for credit losses	$ 3,541,000	(1,921,000)	$ 14,194,000
Number of loans modified in period | loan	22
Total loans modified in period	$ 5,007,000	22,192,000
Maximum
Activity in the allowance for loan losses [Line Items]
Percentage of commercial outstanding loan balances						40.00%
Minimum
Activity in the allowance for loan losses [Line Items]
Percentage of commercial outstanding loan balances						35.00%
Total Past Due
Activity in the allowance for loan losses [Line Items]
Amortized costs basis modified, past due	$ 2,771,000	$ 5,490,000
Payment Delay
Activity in the allowance for loan losses [Line Items]
Number of loans modified in period | loan	21	18
Number of borrowers with modified loans | borrower	20	17
Total loans modified in period	$ 4,541,000	$ 19,736,000
Term Extension
Activity in the allowance for loan losses [Line Items]
Number of loans modified in period | loan	1,000,000
Total loans modified in period	$ 466,000	2,456,000
Unfunded Loan Commitment
Activity in the allowance for loan losses [Line Items]
Provision (release of allowance) for credit losses	600,000	600,000	$ 600,000
Commercial:
Activity in the allowance for loan losses [Line Items]
Number foreclosed properties held				2	1,000,000
Investment in loans in the process of foreclosure	2,300,000
Total loans modified in period	5,007,000	22,192,000
Commercial: | Total Past Due
Activity in the allowance for loan losses [Line Items]
Amortized costs basis modified, past due	2,771,000	5,490,000
Commercial: | Payment Delay
Activity in the allowance for loan losses [Line Items]
Total loans modified in period	4,541,000	19,736,000
Commercial: | Term Extension
Activity in the allowance for loan losses [Line Items]
Total loans modified in period	466,000	2,456,000
Commercial: | Business
Activity in the allowance for loan losses [Line Items]
Total loans modified in period	5,007,000	$ 8,535,000
Number of modified loans, subsequent default | loan		2			4,000,000
Commercial: | Business | Total Past Due
Activity in the allowance for loan losses [Line Items]
Number of past due modified loans | loan		8			9
Number of past due modified loans, non-accrual | numberOfBank							6,000,000
Amortized costs basis modified, past due	2,771,000	$ 5,490,000
Commercial: | Business | Government-Guaranteed Collateral | Total Past Due
Activity in the allowance for loan losses [Line Items]
Number of loans modified in period | loan		5
Amortized costs basis modified, past due		$ 3,800,000
Commercial: | Business | Equipment | Total Past Due
Activity in the allowance for loan losses [Line Items]
Number of loans modified in period | loan		3
Amortized costs basis modified, past due		$ 1,700,000
Commercial: | Business | Payment Delay
Activity in the allowance for loan losses [Line Items]
Number of loans modified in period | loan		1,000,000
Total loans modified in period	$ 4,541,000	$ 8,535,000
Commercial: | Business | Payment Delay | Accounts Receivable
Activity in the allowance for loan losses [Line Items]
Number of loans modified in period | loan	1	1,000,000
Total loans modified in period	$ 200,000	$ 200,000
Commercial: | Business | Payment Delay | Government-Guaranteed Collateral
Activity in the allowance for loan losses [Line Items]
Number of loans modified in period | loan	21	16
Total loans modified in period	$ 4,800,000	$ 8,300,000
Commercial: | Business | Term Extension
Activity in the allowance for loan losses [Line Items]
Total loans modified in period	466,000	0
Commercial: | Real estate
Activity in the allowance for loan losses [Line Items]
Total loans modified in period	0	12,903,000
Commercial: | Real estate | Total Past Due
Activity in the allowance for loan losses [Line Items]
Amortized costs basis modified, past due	0	0
Commercial: | Real estate | Payment Delay
Activity in the allowance for loan losses [Line Items]
Total loans modified in period	0	11,201,000
Commercial: | Real estate | Term Extension
Activity in the allowance for loan losses [Line Items]
Total loans modified in period	0	1,702,000
Residential real estate
Activity in the allowance for loan losses [Line Items]
Number foreclosed properties held | loan					7,000,000
Investment in loans in the process of foreclosure	3,100,000
Total loans modified in period	0	0
Residential real estate | Total Past Due
Activity in the allowance for loan losses [Line Items]
Amortized costs basis modified, past due	0	0
Residential real estate | Payment Delay
Activity in the allowance for loan losses [Line Items]
Total loans modified in period	0	0
Residential real estate | Term Extension
Activity in the allowance for loan losses [Line Items]
Total loans modified in period	$ 0	$ 0

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