Allowance for Credit Losses - By Loan Rating and Year of Origination (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2026	Dec. 31, 2025
Term Loans Amortized Cost Basis by Origination Year
Loans, gross	$ 2,075,052,000	$ 2,054,576,000
Commercial and consumer loan portfolio
Term Loans Amortized Cost Basis by Origination Year
2026/2025	77,327,000	211,865,000
2025/2024	204,906,000	287,003,000
2024/2023	272,126,000	212,519,000
2023/2022	199,461,000	252,660,000
2022/2021	247,834,000	165,286,000
Prior	497,157,000	347,804,000
Revolving Loans Recorded Balance	114,415,000	112,086,000
Revolving Loans Converted to Term	1,180,000	1,078,000
Loans, gross	1,614,406,000	1,590,301,000
Commercial and consumer loan portfolio \| Pass
Term Loans Amortized Cost Basis by Origination Year
2026/2025	77,327,000	211,865,000
2025/2024	204,906,000	286,890,000
2024/2023	271,868,000	211,664,000
2023/2022	198,640,000	252,387,000
2022/2021	247,648,000	165,084,000
Prior	496,479,000	347,325,000
Revolving Loans Recorded Balance	114,415,000	112,086,000
Revolving Loans Converted to Term	1,086,000	977,000
Loans, gross	1,612,369,000	1,588,278,000
Commercial and consumer loan portfolio \| Special Mention
Term Loans Amortized Cost Basis by Origination Year
2024/2023	161,000	22,000
2023/2022	21,000	84,000
2022/2021	82,000	202,000
Prior	520,000	419,000
Revolving Loans Converted to Term	94,000	101,000
Loans, gross	878,000	828,000
Commercial and consumer loan portfolio \| Substandard
Term Loans Amortized Cost Basis by Origination Year
Prior	60,000	60,000
Loans, gross	60,000	60,000
Commercial and consumer loan portfolio \| Substandard Nonaccrual
Term Loans Amortized Cost Basis by Origination Year
2025/2024		113,000
2024/2023	97,000	833,000
2023/2022	800,000	189,000
2022/2021	104,000
Prior	98,000
Loans, gross	1,099,000	1,135,000
Commercial real estate
Term Loans Amortized Cost Basis by Origination Year
2026/2025	29,748,000	72,184,000
2025/2024	72,456,000	110,069,000
2024/2023	114,721,000	120,853,000
2023/2022	130,789,000	162,934,000
2022/2021	160,904,000	120,074,000
Prior	361,900,000	249,089,000
Revolving Loans Converted to Term	125,000	229,000
Loans, gross	870,643,000	835,432,000
Revolving Loans Converted to Term During The Period		128,000
Commercial real estate \| Pass
Term Loans Amortized Cost Basis by Origination Year
2026/2025	29,748,000	72,184,000
2025/2024	72,456,000	110,069,000
2024/2023	114,721,000	120,853,000
2023/2022	130,789,000	162,934,000
2022/2021	160,904,000	120,074,000
Prior	361,830,000	249,017,000
Revolving Loans Converted to Term	125,000	229,000
Loans, gross	870,573,000	835,360,000
Commercial real estate \| Special Mention
Term Loans Amortized Cost Basis by Origination Year
Prior	70,000	72,000
Loans, gross	70,000	72,000
Commercial business
Term Loans Amortized Cost Basis by Origination Year
2026/2025	6,536,000	9,557,000
2025/2024	8,790,000	7,623,000
2024/2023	7,213,000	10,169,000
2023/2022	9,434,000	13,091,000
2022/2021	12,853,000	11,841,000
Prior	34,803,000	26,507,000
Revolving Loans Recorded Balance	38,838,000	36,875,000
Revolving Loans Converted to Term	160,000	47,000
Loans, gross	118,627,000	115,710,000
Revolving Loans Converted to Term During The Period	119,000
Commercial business \| Pass
Term Loans Amortized Cost Basis by Origination Year
2026/2025	6,536,000	9,557,000
2025/2024	8,790,000	7,623,000
2024/2023	7,213,000	10,169,000
2023/2022	9,434,000	13,091,000
2022/2021	12,853,000	11,841,000
Prior	34,694,000	26,507,000
Revolving Loans Recorded Balance	38,838,000	36,875,000
Revolving Loans Converted to Term	160,000	47,000
Loans, gross	118,518,000	115,710,000
Commercial business \| Special Mention
Term Loans Amortized Cost Basis by Origination Year
Prior	107,000
Loans, gross	107,000
Commercial business \| Substandard Nonaccrual
Term Loans Amortized Cost Basis by Origination Year
Prior	2,000
Loans, gross	2,000
Construction - commercial real estate
Term Loans Amortized Cost Basis by Origination Year
2026/2025	3,424,000	10,384,000
2025/2024	7,885,000	54,141,000
2024/2023	47,184,000	31,892,000
2023/2022	13,582,000	3,187,000
2022/2021	3,187,000
Loans, gross	75,262,000	99,604,000
Construction - commercial real estate \| Pass
Term Loans Amortized Cost Basis by Origination Year
2026/2025	3,424,000	10,384,000
2025/2024	7,885,000	54,141,000
2024/2023	47,184,000	31,892,000
2023/2022	13,582,000	3,187,000
2022/2021	3,187,000
Loans, gross	75,262,000	99,604,000
Land acquisition and development
Term Loans Amortized Cost Basis by Origination Year
2026/2025	16,040,000	18,966,000
2025/2024	23,716,000	41,178,000
2024/2023	37,595,000
2023/2022		371,000
2022/2021	371,000
Prior	4,753,000	5,733,000
Loans, gross	82,475,000	66,248,000
Land acquisition and development \| Pass
Term Loans Amortized Cost Basis by Origination Year
2026/2025	16,040,000	18,966,000
2025/2024	23,716,000	41,178,000
2024/2023	37,595,000
2023/2022		371,000
2022/2021	371,000
Prior	4,753,000	5,733,000
Loans, gross	82,475,000	66,248,000
Builder lines
Term Loans Amortized Cost Basis by Origination Year
2026/2025	4,976,000	27,069,000
2025/2024	19,435,000	8,855,000
2024/2023	4,978,000	826,000
2023/2022	446,000	784,000
2022/2021	1,018,000
Prior	205,000	404,000
Loans, gross	31,058,000	37,938,000
Builder lines \| Pass
Term Loans Amortized Cost Basis by Origination Year
2026/2025	4,976,000	27,069,000
2025/2024	19,435,000	8,855,000
2024/2023	4,978,000	826,000
2023/2022	446,000	784,000
2022/2021	1,018,000
Prior	205,000	404,000
Loans, gross	31,058,000	37,938,000
Construction - consumer real estate
Term Loans Amortized Cost Basis by Origination Year
2026/2025	2,934,000	24,158,000
2025/2024	27,061,000	5,130,000
2024/2023	2,545,000
Loans, gross	32,540,000	29,288,000
Construction - consumer real estate \| Pass
Term Loans Amortized Cost Basis by Origination Year
2026/2025	2,934,000	24,158,000
2025/2024	27,061,000	5,130,000
2024/2023	2,545,000
Loans, gross	32,540,000	29,288,000
Residential mortgage
Term Loans Amortized Cost Basis by Origination Year
2026/2025	11,717,000	44,390,000
2025/2024	41,452,000	57,495,000
2024/2023	55,787,000	47,461,000
2023/2022	44,102,000	71,623,000
2022/2021	68,921,000	33,289,000
Prior	94,698,000	65,278,000
Loans, gross	316,677,000	319,536,000
Residential mortgage \| Pass
Term Loans Amortized Cost Basis by Origination Year
2026/2025	11,717,000	44,390,000
2025/2024	41,452,000	57,382,000
2024/2023	55,529,000	46,606,000
2023/2022	43,281,000	71,350,000
2022/2021	68,735,000	33,087,000
Prior	94,199,000	64,871,000
Loans, gross	314,913,000	317,686,000
Residential mortgage \| Special Mention
Term Loans Amortized Cost Basis by Origination Year
2024/2023	161,000	22,000
2023/2022	21,000	84,000
2022/2021	82,000	202,000
Prior	343,000	347,000
Loans, gross	607,000	655,000
Residential mortgage \| Substandard
Term Loans Amortized Cost Basis by Origination Year
Prior	60,000	60,000
Loans, gross	60,000	60,000
Residential mortgage \| Substandard Nonaccrual
Term Loans Amortized Cost Basis by Origination Year
2025/2024		113,000
2024/2023	97,000	833,000
2023/2022	800,000	189,000
2022/2021	104,000
Prior	96,000
Loans, gross	1,097,000	1,135,000
Equity lines
Term Loans Amortized Cost Basis by Origination Year
Prior	490,000	493,000
Revolving Loans Recorded Balance	75,535,000	75,165,000
Revolving Loans Converted to Term	895,000	802,000
Loans, gross	76,920,000	76,460,000
Revolving Loans Converted to Term During The Period	169,000	516,000
Equity lines \| Pass
Term Loans Amortized Cost Basis by Origination Year
Prior	490,000	493,000
Revolving Loans Recorded Balance	75,535,000	75,165,000
Revolving Loans Converted to Term	801,000	701,000
Loans, gross	76,826,000	76,359,000
Equity lines \| Special Mention
Term Loans Amortized Cost Basis by Origination Year
Revolving Loans Converted to Term	94,000	101,000
Loans, gross	94,000	101,000
Other consumer
Term Loans Amortized Cost Basis by Origination Year
2026/2025	1,952,000	5,157,000
2025/2024	4,111,000	2,512,000
2024/2023	2,103,000	1,318,000
2023/2022	1,108,000	670,000
2022/2021	580,000	82,000
Prior	308,000	300,000
Revolving Loans Recorded Balance	42,000	46,000
Loans, gross	10,204,000	10,085,000
Other consumer \| Pass
Term Loans Amortized Cost Basis by Origination Year
2026/2025	1,952,000	5,157,000
2025/2024	4,111,000	2,512,000
2024/2023	2,103,000	1,318,000
2023/2022	1,108,000	670,000
2022/2021	580,000	82,000
Prior	308,000	300,000
Revolving Loans Recorded Balance	42,000	46,000
Loans, gross	$ 10,204,000	$ 10,085,000

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
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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