Loans Receivable and Allowance for Credit Losses - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Financing Receivable, Impaired [Line Items]
With no related allowance recorded: average recorded investment	$ 22,068	$ 10,759	$ 25,379	$ 10,053
With no related allowance recorded: interest income recognized	2	125	20	236
With a related allowance recorded: average recorded investment	2,814	24,627	2,941	25,018
With a related allowance recorded: interest income recognized	232	59	232	274
Financing Receivable, Individually Evaluated for Credit Loss, Average Recorded Investment	24,882	35,386	28,320	35,071
Financing Receivable, Individually Evaluated for Credit Loss, Interest Income Recognized	234	184	252	510
Business Activities Loans
Financing Receivable, Impaired [Line Items]
With no related allowance recorded: recorded investment	21,913		21,913		$ 22,549
With no related allowance recorded: principal outstanding	39,001		39,001		38,951
With a related allowance recorded: recorded investment	2,813		2,813		2,466
With a related allowance recorded: principal outstanding	7,057		7,057		2,779
Related Allowance	1,680		1,680		463
Recorded Investment	24,726		24,726		25,015
Principal Outstanding	46,058		46,058		41,730
Commercial Real Estate
Financing Receivable, Impaired [Line Items]
With no related allowance recorded: average recorded investment	20,046	3,923	21,890	3,922
With no related allowance recorded: interest income recognized	0	0	18	0
With a related allowance recorded: average recorded investment	218	24,627	318	25,018
With a related allowance recorded: interest income recognized	63	59	63	274
Financing Receivable, Individually Evaluated for Credit Loss, Average Recorded Investment	20,264	28,550	22,208	28,940
Financing Receivable, Individually Evaluated for Credit Loss, Interest Income Recognized	63	59	81	274
Commercial Real Estate \| Business Activities Loans
Financing Receivable, Impaired [Line Items]
With no related allowance recorded: recorded investment	19,891		19,891		18,361
With no related allowance recorded: principal outstanding	36,424		36,424		34,224
With a related allowance recorded: recorded investment	218		218		974
With a related allowance recorded: principal outstanding	2,026		2,026		969
Related Allowance	116		116		403
Recorded Investment	20,109		20,109		19,335
Principal Outstanding	38,450		38,450		35,193
Residential Real Estate
Financing Receivable, Impaired [Line Items]
With no related allowance recorded: average recorded investment	58	0	59	0
With no related allowance recorded: interest income recognized	2	0	2	0
Financing Receivable, Individually Evaluated for Credit Loss, Average Recorded Investment	58	0	59	0
Financing Receivable, Individually Evaluated for Credit Loss, Interest Income Recognized	2	0	2	0
Residential Real Estate \| Business Activities Loans
Financing Receivable, Impaired [Line Items]
With no related allowance recorded: recorded investment	57		57		0
With no related allowance recorded: principal outstanding	58		58		0
Related Allowance	0		0		0
Recorded Investment	57		57		0
Principal Outstanding	58		58		0
Commercial and Industrial
Financing Receivable, Impaired [Line Items]
With no related allowance recorded: average recorded investment	1,933	4,479	2,003	3,720
With no related allowance recorded: interest income recognized	0	125	0	236
With a related allowance recorded: average recorded investment	2,596	0	2,623	0
With a related allowance recorded: interest income recognized	169	0	169	0
Financing Receivable, Individually Evaluated for Credit Loss, Average Recorded Investment	4,529	4,479	4,626	3,720
Financing Receivable, Individually Evaluated for Credit Loss, Interest Income Recognized	169	125	169	236
Commercial and Industrial \| Business Activities Loans
Financing Receivable, Impaired [Line Items]
With no related allowance recorded: recorded investment	1,934		1,934		1,831
With no related allowance recorded: principal outstanding	2,370		2,370		2,251
With a related allowance recorded: recorded investment	2,595		2,595		1,492
With a related allowance recorded: principal outstanding	5,031		5,031		1,810
Related Allowance	1,564		1,564		60
Recorded Investment	4,529		4,529		3,323
Principal Outstanding	7,401		7,401		4,061
Construction to Permanent - CRE
Financing Receivable, Impaired [Line Items]
With no related allowance recorded: average recorded investment	31	2,357	1,427	2,411
With no related allowance recorded: interest income recognized	0	0	0	0
Financing Receivable, Individually Evaluated for Credit Loss, Average Recorded Investment	31	2,357	1,427	2,411
Financing Receivable, Individually Evaluated for Credit Loss, Interest Income Recognized	0	$ 0	0	$ 0
Construction to Permanent - CRE \| Business Activities Loans
Financing Receivable, Impaired [Line Items]
With no related allowance recorded: recorded investment	31		31		2,357
With no related allowance recorded: principal outstanding	149		149		2,476
Related Allowance	0		0		0
Recorded Investment	31		31		2,357
Principal Outstanding	$ 149		$ 149		$ 2,476

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Amount of allowance for credit loss on financing receivable evaluated on individual basis. Excludes financing receivable evaluated on collective basis.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
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