Loans Receivable and Allowance for Credit Losses - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
2023	$ 115,406
2022	215,433
2021	151,370
2020	23,832
2019	85,599
Prior	176,907
Revolving	121,345
Loans receivable, gross	889,892	$ 848,316
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	115,200
2022	214,126
2021	147,197
2020	23,832
2019	59,837
Prior	168,526
Revolving	121,345
Loans receivable, gross	850,063
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	7
2022	0
2021	3,271
2020	0
2019	142
Prior	11
Revolving	0
Loans receivable, gross	3,431
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	199
2022	1,307
2021	902
2020	0
2019	25,620
Prior	8,370
Revolving	0
Loans receivable, gross	36,398
Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
2023	104,575
2022	154,128
2021	112,405
2020	3,705
2019	51,671
Prior	72,648
Revolving	0
Loans receivable, gross	499,132	437,443
Commercial Real Estate \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	104,575
2022	154,128
2021	112,405
2020	3,705
2019	30,436
Prior	67,304
Revolving	0
Loans receivable, gross	472,553
Commercial Real Estate \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	21,235
Prior	5,344
Revolving	0
Loans receivable, gross	26,579
Residential Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
2023	26
2022	1,259
2021	3,111
2020	11,990
2019	15,830
Prior	79,803
Revolving	581
Loans receivable, gross	112,600	124,140
Residential Real Estate \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	26
2022	1,259
2021	3,111
2020	11,990
2019	15,830
Prior	78,180
Revolving	581
Loans receivable, gross	110,977
Residential Real Estate \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	1,623
Revolving	0
Loans receivable, gross	1,623
Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2023	2,625
2022	15,188
2021	24,232
2020	8,137
2019	11,860
Prior	9,210
Revolving	89,244
Loans receivable, gross	160,496	138,787
Commercial and Industrial \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	2,601
2022	14,653
2021	22,623
2020	8,137
2019	7,812
Prior	7,818
Revolving	89,244
Loans receivable, gross	152,888
Commercial and Industrial \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	7
2022	0
2021	808
2020	0
2019	142
Prior	11
Revolving	0
Loans receivable, gross	968
Commercial and Industrial \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	17
2022	535
2021	801
2020	0
2019	3,906
Prior	1,381
Revolving	0
Loans receivable, gross	6,640
Consumer and Other
Financing Receivable, Credit Quality Indicator [Line Items]
2023	8,180
2022	44,858
2021	5,848
2020	0
2019	5,759
Prior	15,246
Revolving	31,520
Loans receivable, gross	111,411	141,091
Consumer and Other \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	7,998
2022	44,086
2021	5,747
2020	0
2019	5,759
Prior	15,224
Revolving	31,520
Loans receivable, gross	110,334
Consumer and Other \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	182
2022	772
2021	101
2020	0
2019	0
Prior	22
Revolving	0
Loans receivable, gross	1,077
Construction
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	3,311
2020	0
2019	479
Prior	0
Revolving	0
Loans receivable, gross	3,790	4,922
Construction \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	3,311
2020	0
2019	0
Prior	0
Revolving	0
Loans receivable, gross	3,311
Construction \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	479
Prior	0
Revolving	0
Loans receivable, gross	479
Construction to Permanent - CRE
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	2,463
2020	0
2019	0
Prior	0
Revolving	0
Loans receivable, gross	2,463	$ 1,933
Construction to Permanent - CRE \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	2,463
2020	0
2019	0
Prior	0
Revolving	0
Loans receivable, gross	$ 2,463

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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