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Loans Receivable and Allowance for Credit Losses - Individually Evaluated for Impairment (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	$ 13,777	$ 15,925	$ 24,780	$ 10,310
Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated loans	3,344	4,205
Allowance for credit losses, collectively evaluated for impairment	10,433	11,720
Allowance for credit loss	13,777	15,925
Individually evaluated loans	22,513	17,133
Collectively evaluated for impairment, amount	787,810	831,726
Loans receivable, gross	810,323	848,859
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	5,620	6,089	9,809	6,966
Commercial Real Estate | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated loans	3,321	3,813
Allowance for credit losses, collectively evaluated for impairment	2,299	2,276
Allowance for credit loss	5,620	6,089
Individually evaluated loans	15,914	12,775
Collectively evaluated for impairment, amount	446,633	459,318
Loans receivable, gross	462,547	472,093
Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	671	607	853	665
Residential Real Estate | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated loans	0	0
Allowance for credit losses, collectively evaluated for impairment	671	607
Allowance for credit loss	671	607
Individually evaluated loans	0	0
Collectively evaluated for impairment, amount	102,881	106,783
Loans receivable, gross	102,881	106,783
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	1,199	1,269	1,799	1,403
Commercial and Industrial | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated loans	23	392
Allowance for credit losses, collectively evaluated for impairment	1,176	877
Allowance for credit loss	1,199	1,269
Individually evaluated loans	3,706	3,904
Collectively evaluated for impairment, amount	144,714	159,661
Loans receivable, gross	148,420	163,565
Consumer and Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	6,280	7,843	12,251	1,207
Consumer and Other | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated loans	0	0
Allowance for credit losses, collectively evaluated for impairment	6,280	7,843
Allowance for credit loss	6,280	7,843
Individually evaluated loans	0	0
Collectively evaluated for impairment, amount	89,772	99,688
Loans receivable, gross	89,772	99,688
Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	7	4	21	24
Construction | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated loans	0	0
Allowance for credit losses, collectively evaluated for impairment	7	4
Allowance for credit loss	7	4
Individually evaluated loans	429	454
Collectively evaluated for impairment, amount	3,810	3,812
Loans receivable, gross	4,239	4,266
Construction to Permanent - CRE
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	0	113	47	10
Construction to Permanent - CRE | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated loans	0	0
Allowance for credit losses, collectively evaluated for impairment	0	113
Allowance for credit loss	0	113
Individually evaluated loans	2,464	0
Collectively evaluated for impairment, amount	0	2,464
Loans receivable, gross	2,464	2,464
Unallocated
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	$ 0	$ 0	$ 0	$ 35

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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