Loans and Allowance for Credit Losses on Loans - Credit Quality Indicators (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Loans
2023/ 2022	$ 455,535,000	$ 735,274,000
2022/ 2021	642,395,000	874,235,000
2021/ 2020	757,210,000	161,375,000
2020/ 2019	128,649,000	240,466,000
2019/ 2018	217,307,000	155,623,000
Prior Periods	743,954,000	680,984,000
Revolving	405,823,000	451,110,000
Total loan balance	3,350,873,000	3,299,067,000
Balance to report	3,302,420,000	3,251,038,000
Loan classified as loss
Loans
Balance to report	0	0
Risk Grades
Loans
2023/ 2022	455,535,000	735,274,000
2022/ 2021	642,395,000	874,235,000
2021/ 2020	757,210,000	161,375,000
2020/ 2019	128,649,000	240,466,000
2019/ 2018	217,307,000	155,623,000
Prior Periods	743,954,000	680,984,000
Revolving	405,823,000	451,110,000
Total loan balance	3,350,873,000	3,299,067,000
Risk Grades | Pass
Loans
2023/ 2022	449,132,000	731,862,000
2022/ 2021	637,785,000	870,023,000
2021/ 2020	749,811,000	159,659,000
2020/ 2019	127,132,000	236,243,000
2019/ 2018	208,280,000	153,618,000
Prior Periods	715,749,000	653,756,000
Revolving	398,528,000	437,326,000
Total loan balance	3,286,417,000	3,242,487,000
Risk Grades | Special Mention
Loans
2023/ 2022	4,270,000	3,408,000
2022/ 2021	1,342,000	3,175,000
2021/ 2020	3,344,000	1,716,000
2020/ 2019	462,000	4,078,000
2019/ 2018	7,626,000	1,482,000
Prior Periods	13,072,000	20,031,000
Revolving	2,577,000	8,146,000
Total loan balance	32,693,000	42,036,000
Risk Grades | Substandard
Loans
2023/ 2022	2,133,000	4,000
2022/ 2021	2,489,000	660,000
2020/ 2019	100,000	145,000
2019/ 2018	1,285,000	193,000
Prior Periods	14,362,000	7,164,000
Revolving	4,576,000	5,638,000
Total loan balance	24,945,000	13,804,000
Risk Grades | Substandard-Nonaccrual
Loans
2022/ 2021	779,000	377,000
2021/ 2020	4,055,000
2020/ 2019	955,000
2019/ 2018	116,000	330,000
Prior Periods	771,000	33,000
Revolving	142,000
Total loan balance	6,818,000	740,000
Commercial. | Commercial
Loans
2023/ 2022	101,498,000	106,381,000
2022/ 2021	27,858,000	38,091,000
2021/ 2020	20,122,000	24,598,000
2020/ 2019	15,029,000	20,540,000
2019/ 2018	12,327,000	12,419,000
Prior Periods	27,874,000	27,293,000
Revolving	259,070,000	304,593,000
Total loan balance	463,778,000	533,915,000
Commercial. | Commercial | Pass
Loans
2023/ 2022	99,387,000	102,969,000
2022/ 2021	25,250,000	36,752,000
2021/ 2020	19,732,000	24,406,000
2020/ 2019	14,929,000	19,272,000
2019/ 2018	11,893,000	12,089,000
Prior Periods	22,134,000	21,127,000
Revolving	258,461,000	293,546,000
Total loan balance	451,786,000	510,161,000
Commercial. | Commercial | Special Mention
Loans
2023/ 2022	2,107,000	3,408,000
2022/ 2021	1,092,000	1,060,000
2021/ 2020	41,000	192,000
2020/ 2019		1,123,000
2019/ 2018	133,000
Prior Periods	1,134,000	6,031,000
Revolving	467,000	5,551,000
Total loan balance	4,974,000	17,365,000
Commercial. | Commercial | Substandard
Loans
2023/ 2022	4,000	4,000
2022/ 2021	1,516,000
2020/ 2019	100,000	145,000
2019/ 2018	185,000
Prior Periods	3,835,000	102,000
Revolving	142,000	5,496,000
Total loan balance	5,782,000	5,747,000
Commercial. | Commercial | Substandard-Nonaccrual
Loans
2022/ 2021		279,000
2021/ 2020	349,000
2019/ 2018	116,000	330,000
Prior Periods	771,000	33,000
Total loan balance	1,236,000	642,000
Real estate | CRE - Owner Occupied
Loans
2023/ 2022	32,993,000	92,689,000
2022/ 2021	86,938,000	118,959,000
2021/ 2020	113,854,000	75,874,000
2020/ 2019	68,646,000	61,007,000
2019/ 2018	53,985,000	58,373,000
Prior Periods	216,535,000	199,003,000
Revolving	10,302,000	8,758,000
Total loan balance	583,253,000	614,663,000
Real estate | CRE - Owner Occupied | Pass
Loans
2023/ 2022	32,993,000	92,689,000
2022/ 2021	86,688,000	116,266,000
2021/ 2020	110,613,000	75,007,000
2020/ 2019	68,184,000	59,887,000
2019/ 2018	52,885,000	58,180,000
Prior Periods	214,729,000	194,584,000
Revolving	10,302,000	8,758,000
Total loan balance	576,394,000	605,371,000
Real estate | CRE - Owner Occupied | Special Mention
Loans
2022/ 2021	250,000	2,033,000
2021/ 2020	3,241,000	867,000
2020/ 2019	462,000	1,120,000
Prior Periods	1,802,000	4,410,000
Total loan balance	5,755,000	8,430,000
Real estate | CRE - Owner Occupied | Substandard
Loans
2022/ 2021		660,000
2019/ 2018	1,100,000	193,000
Prior Periods	4,000	9,000
Total loan balance	1,104,000	862,000
Real estate | CRE - Non-Owner Occupied
Loans
2023/ 2022	225,505,000	239,556,000
2022/ 2021	243,080,000	278,051,000
2021/ 2020	267,870,000	31,848,000
2020/ 2019	28,315,000	101,854,000
2019/ 2018	100,141,000	63,905,000
Prior Periods	388,206,000	347,909,000
Revolving	3,473,000	3,245,000
Total loan balance	1,256,590,000	1,066,368,000
Real estate | CRE - Non-Owner Occupied | Pass
Loans
2023/ 2022	225,505,000	239,556,000
2022/ 2021	243,080,000	278,051,000
2021/ 2020	267,870,000	31,848,000
2020/ 2019	28,315,000	101,854,000
2019/ 2018	92,648,000	63,905,000
Prior Periods	370,552,000	337,048,000
Revolving	3,199,000	3,245,000
Total loan balance	1,231,169,000	1,055,507,000
Real estate | CRE - Non-Owner Occupied | Special Mention
Loans
2019/ 2018	7,493,000
Prior Periods	10,040,000	4,883,000
Total loan balance	17,533,000	4,883,000
Real estate | CRE - Non-Owner Occupied | Substandard
Loans
Prior Periods	7,614,000	5,978,000
Revolving	274,000
Total loan balance	7,888,000	5,978,000
Real estate | Land & Construction
Loans
2023/ 2022	44,434,000	62,241,000
2022/ 2021	52,862,000	72,847,000
2021/ 2020	31,125,000	22,459,000
2020/ 2019	10,228,000	6,030,000
2019/ 2018	1,864,000
Total loan balance	140,513,000	163,577,000
Real estate | Land & Construction | Pass
Loans
2023/ 2022	40,142,000	62,241,000
2022/ 2021	52,862,000	72,847,000
2021/ 2020	27,419,000	22,459,000
2020/ 2019	9,273,000	6,030,000
2019/ 2018	1,864,000
Total loan balance	131,560,000	163,577,000
Real estate | Land & Construction | Special Mention
Loans
2023/ 2022	2,163,000
Total loan balance	2,163,000
Real estate | Land & Construction | Substandard
Loans
2023/ 2022	2,129,000
Total loan balance	2,129,000
Real estate | Land & Construction | Substandard-Nonaccrual
Loans
2021/ 2020	3,706,000
2020/ 2019	955,000
Total loan balance	4,661,000
Real estate | Home Equity
Loans
2022/ 2021		98,000
Prior Periods	1,463,000	188,000
Revolving	117,662,000	120,438,000
Total loan balance	119,125,000	120,724,000
Real estate | Home Equity | Pass
Loans
Prior Periods	1,463,000	44,000
Revolving	111,250,000	117,950,000
Total loan balance	112,713,000	117,994,000
Real estate | Home Equity | Special Mention
Loans
Revolving	2,110,000	2,346,000
Total loan balance	2,110,000	2,346,000
Real estate | Home Equity | Substandard
Loans
Prior Periods		144,000
Revolving	4,160,000	142,000
Total loan balance	4,160,000	286,000
Real estate | Home Equity | Substandard-Nonaccrual
Loans
2022/ 2021		98,000
Revolving	142,000
Total loan balance	142,000	98,000
Real estate | Multi-Family
Loans
2023/ 2022	47,089,000	42,111,000
2022/ 2021	41,112,000	69,824,000
2021/ 2020	55,557,000	5,528,000
2020/ 2019	5,394,000	43,183,000
2019/ 2018	42,129,000	15,356,000
Prior Periods	78,098,000	68,700,000
Revolving	355,000	180,000
Total loan balance	269,734,000	244,882,000
Real estate | Multi-Family | Pass
Loans
2023/ 2022	47,089,000	42,111,000
2022/ 2021	41,112,000	69,824,000
2021/ 2020	55,557,000	4,871,000
2020/ 2019	5,394,000	42,412,000
2019/ 2018	42,129,000	15,356,000
Prior Periods	75,890,000	66,380,000
Revolving	355,000	180,000
Total loan balance	267,526,000	241,134,000
Real estate | Multi-Family | Special Mention
Loans
2021/ 2020		657,000
2020/ 2019		771,000
Prior Periods		2,320,000
Total loan balance		3,748,000
Real estate | Multi-Family | Substandard
Loans
Prior Periods	2,208,000
Total loan balance	2,208,000
Real estate | Residential Mortgage
Loans
2023/ 2022	1,684,000	191,907,000
2022/ 2021	189,169,000	296,270,000
2021/ 2020	268,617,000	1,068,000
2020/ 2019	1,037,000	7,846,000
2019/ 2018	6,861,000	4,206,000
Prior Periods	29,593,000	36,608,000
Total loan balance	496,961,000	537,905,000
Real estate | Residential Mortgage | Pass
Loans
2023/ 2022	1,684,000	191,907,000
2022/ 2021	187,417,000	296,270,000
2021/ 2020	268,617,000	1,068,000
2020/ 2019	1,037,000	6,788,000
2019/ 2018	6,861,000	2,724,000
Prior Periods	28,892,000	33,290,000
Total loan balance	494,508,000	532,047,000
Real estate | Residential Mortgage | Special Mention
Loans
2020/ 2019		1,058,000
2019/ 2018		1,482,000
Prior Periods		2,387,000
Total loan balance		4,927,000
Real estate | Residential Mortgage | Substandard
Loans
2022/ 2021	973,000
Prior Periods	701,000	931,000
Total loan balance	1,674,000	931,000
Real estate | Residential Mortgage | Substandard-Nonaccrual
Loans
2022/ 2021	779,000
Total loan balance	779,000
Consumer | Consumer and Other
Loans
2023/ 2022	2,332,000	389,000
2022/ 2021	1,376,000	95,000
2021/ 2020	65,000
2020/ 2019		6,000
2019/ 2018		1,364,000
Prior Periods	2,185,000	1,283,000
Revolving	14,961,000	13,896,000
Total loan balance	20,919,000	17,033,000
Consumer | Consumer and Other | Pass
Loans
2023/ 2022	2,332,000	389,000
2022/ 2021	1,376,000	13,000
2021/ 2020	3,000
2019/ 2018		1,364,000
Prior Periods	2,089,000	1,283,000
Revolving	14,961,000	13,647,000
Total loan balance	20,761,000	16,696,000
Consumer | Consumer and Other | Special Mention
Loans
2022/ 2021		82,000
2021/ 2020	62,000
2020/ 2019		6,000
Prior Periods	96,000
Revolving		249,000
Total loan balance	$ 158,000	$ 337,000