Loans and Allowance for Credit Losses - Summary of Loans by Year of Origination (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2025	Dec. 31, 2024
Total Loans
2025/2024	$ 134,754	$ 133,528
2024/2023	123,988	147,599
2023/2022	130,104	199,268
2022/2021	172,866	149,583
2021/2020	134,778	117,398
Prior	366,161	294,811
Revolving Loans Amortized Cost Basis	80,735	50,439
Total	1,143,386	1,092,626
Gross Charge Offs
2025/2024	0	0
2024/2023	0	46
2023/2022	19	329
2022/2021	64	57
2021/2020	19	54
Prior	102	52
Revolving Loans Amortized Cost Basis	45	114
Total	249	652
Real Estate: \| Residential
Total Loans
2025/2024	15,084	16,932
2024/2023	15,816	34,311
2023/2022	32,549	49,238
2022/2021	45,467	41,652
2021/2020	39,240	54,422
Prior	161,972	123,420
Revolving Loans Amortized Cost Basis	23,302	18,015
Total	333,430	337,990
Real Estate: \| Commercial
Total Loans
2025/2024	71,384	70,357
2024/2023	73,914	53,861
2023/2022	59,486	69,725
2022/2021	70,879	87,074
2021/2020	83,518	46,239
Prior	178,088	155,418
Revolving Loans Amortized Cost Basis	2,126	2,839
Total	539,395	485,513
Real Estate: \| Construction
Total Loans
2025/2024	6,418	11,987
2024/2023	10,860	21,145
2023/2022	6,887	14,342
2022/2021	7,451	269
2021/2020	269	6,962
Prior	7,020	0
Revolving Loans Amortized Cost Basis	0	0
Total	38,905	54,705
Commercial and Industrial
Total Loans
2025/2024	34,316	33,295
2024/2023	22,802	25,263
2023/2022	20,961	12,280
2022/2021	7,004	5,546
2021/2020	2,868	4,374
Prior	10,273	7,751
Revolving Loans Amortized Cost Basis	45,695	23,538
Total	143,919	112,047
Consumer
Total Loans
2025/2024	552	779
2024/2023	461	8,980
2023/2022	6,383	31,806
2022/2021	20,590	15,015
2021/2020	8,883	4,830
Prior	4,218	3,669
Revolving Loans Amortized Cost Basis	8,494	5,429
Total	49,581	70,508
Other
Total Loans
2025/2024	7,000	178
2024/2023	135	4,039
2023/2022	3,838	21,877
2022/2021	21,475	27
2021/2020	0	571
Prior	4,590	4,553
Revolving Loans Amortized Cost Basis	1,118	618
Total	38,156	31,863
Pass \| Real Estate: \| Residential
Total Loans
2025/2024	14,725	16,932
2024/2023	15,816	34,311
2023/2022	30,394	46,602
2022/2021	43,914	41,652
2021/2020	39,240	54,422
Prior	161,364	122,083
Revolving Loans Amortized Cost Basis	23,302	18,015
Total	328,755	334,017
Pass \| Real Estate: \| Commercial
Total Loans
2025/2024	70,758	64,438
2024/2023	68,382	52,178
2023/2022	58,964	67,336
2022/2021	70,879	82,578
2021/2020	80,124	45,959
Prior	171,743	147,557
Revolving Loans Amortized Cost Basis	2,126	2,839
Total	522,976	462,885
Pass \| Real Estate: \| Construction
Total Loans
2025/2024	6,418	11,987
2024/2023	10,860	21,145
2023/2022	6,164	14,342
2022/2021	7,451	269
2021/2020	269	0
Prior	7,020	0
Revolving Loans Amortized Cost Basis	0	0
Total	38,182	47,743
Pass \| Commercial and Industrial
Total Loans
2025/2024	34,316	33,295
2024/2023	22,802	25,063
2023/2022	20,961	12,280
2022/2021	7,004	5,546
2021/2020	2,868	4,374
Prior	10,086	4,530
Revolving Loans Amortized Cost Basis	45,695	20,338
Total	143,732	105,426
Pass \| Consumer
Total Loans
2025/2024	552	779
2024/2023	461	8,980
2023/2022	6,383	31,806
2022/2021	20,590	14,973
2021/2020	8,854	4,809
Prior	4,130	3,519
Revolving Loans Amortized Cost Basis	8,494	5,429
Total	49,464	70,295
Pass \| Other
Total Loans
2025/2024	7,000	178
2024/2023	135	4,039
2023/2022	3,838	21,877
2022/2021	21,475	27
2021/2020	0	571
Prior	4,590	4,553
Revolving Loans Amortized Cost Basis	1,118	618
Total	38,156	31,863
Special Mention \| Real Estate: \| Residential
Total Loans
2025/2024	359	0
2024/2023	0	0
2023/2022	0	2,586
2022/2021	1,553	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	1,912	2,586
Special Mention \| Real Estate: \| Commercial
Total Loans
2025/2024	626	5,919
2024/2023	5,532	1,683
2023/2022	522	2,214
2022/2021	0	4,496
2021/2020	3,394	280
Prior	1,266	2,782
Revolving Loans Amortized Cost Basis	0	0
Total	11,340	17,374
Special Mention \| Real Estate: \| Construction
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	6,962
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	6,962
Special Mention \| Commercial and Industrial
Total Loans
2025/2024	0	0
2024/2023	0	200
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	187	3,221
Revolving Loans Amortized Cost Basis	0	3,200
Total	187	6,621
Special Mention \| Consumer
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Special Mention \| Other
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Substandard \| Real Estate: \| Residential
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	2,155	50
2022/2021	0	0
2021/2020	0	0
Prior	608	1,337
Revolving Loans Amortized Cost Basis	0	0
Total	2,763	1,387
Substandard \| Real Estate: \| Commercial
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	175
2022/2021	0	0
2021/2020	0	0
Prior	5,079	5,079
Revolving Loans Amortized Cost Basis	0	0
Total	5,079	5,254
Substandard \| Real Estate: \| Construction
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	723	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	723	0
Substandard \| Commercial and Industrial
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Substandard \| Consumer
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	42
2021/2020	29	21
Prior	88	150
Revolving Loans Amortized Cost Basis	0	0
Total	117	213
Substandard \| Other
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Doubtful \| Real Estate: \| Residential
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Doubtful \| Real Estate: \| Commercial
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Doubtful \| Real Estate: \| Construction
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Doubtful \| Commercial and Industrial
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Doubtful \| Consumer
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Doubtful \| Other
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Loss \| Real Estate: \| Residential
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Loss \| Real Estate: \| Commercial
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Loss \| Real Estate: \| Construction
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Loss \| Commercial and Industrial
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Loss \| Consumer
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Loss \| Other
Total Loans
2025/2024	0	0
2024/2023	0	0
2023/2022	0	0
2022/2021	0	0
2021/2020	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	$ 0	$ 0

Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process, Write Off

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Amortized cost, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

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