CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest and dividend income:
Loans, including fees		$ 25,033,000	$ 17,670,000	$ 71,113,000	$ 47,541,000
Taxable securities		3,537,000	2,982,000	10,750,000	8,533,000
Tax exempt securities		258,000	267,000	778,000	805,000
Interest-earning deposits		187,000	80,000	400,000	116,000
Total interest and dividend income		29,015,000	20,999,000	83,041,000	56,995,000
Interest expense:
Deposits		10,721,000	1,805,000	24,577,000	3,322,000
Borrowed funds		277,000	204,000	1,905,000	365,000
Total interest expense		10,998,000	2,009,000	26,482,000	3,687,000
Net interest income		18,017,000	18,990,000	56,559,000	53,308,000
Provision (credit) for credit losses	[1]	449,000	1,255,000	962,000	(1,634,000)
Net interest income after provision for credit losses		17,568,000	17,735,000	55,597,000	54,942,000
Non-interest income:
Changes in fair value of equity investments		(68,000)	(93,000)	(99,000)	(448,000)
Net gains (losses) on sales of loans held for sale		67,000	7,000	90,000	106,000
Net gains on sales of other real estate owned		0	22,000	14,000	68,000
Net gains on sales of other real estate owned		11,000	12,000	32,000	34,000
Other		3,106,000	570,000	4,539,000	2,219,000
Total non-interest income		7,808,000	5,036,000	18,678,000	16,018,000
Non-interest expenses:
Salaries and wages		6,542,000	6,550,000	20,029,000	18,829,000
Pension and other employee benefits		1,979,000	2,024,000	5,467,000	5,679,000
Other components of net periodic pension and postretirement benefits		(174,000)	(413,000)	(522,000)	(1,224,000)
Net occupancy		1,337,000	1,269,000	4,242,000	4,065,000
Furniture and equipment		353,000	493,000	1,232,000	1,340,000
Data processing		2,480,000	2,087,000	7,334,000	6,742,000
Professional services		554,000	442,000	1,596,000	1,627,000
Amortization of intangible assets		0	0	0	15,000
Marketing and advertising		218,000	266,000	720,000	726,000
Other real estate owned		10,000	12,000	49,000	(17,000)
FDIC insurance		525,000	389,000	1,608,000	987,000
Loan expense		249,000	(64,000)	789,000	327,000
Other		1,595,000	1,522,000	4,873,000	4,491,000
Total non-interest expenses		15,668,000	14,577,000	47,417,000	43,587,000
Income before income tax expense		9,708,000	8,194,000	26,858,000	27,373,000
Income tax expense		2,060,000	1,741,000	5,660,000	6,029,000
Net income		$ 7,648,000	$ 6,453,000	$ 21,198,000	$ 21,344,000
Weighted average shares outstanding, basic (in shares)		4,736	4,692	4,729	4,691
Weighted average shares outstanding, diluted (in shares)		4,736	4,692	4,729	4,691
Basic earnings per share (in dollars per share)		$ 1.61	$ 1.37	$ 4.48	$ 4.55
Diluted earnings per share (in dollars per share)		$ 1.61	$ 1.37	$ 4.48	$ 4.55
WMG fee income
Non-interest income:
Revenues from contracts with customer		$ 2,533,000	$ 2,403,000	$ 7,716,000	$ 7,788,000
Service charges on deposit accounts
Non-interest income:
Revenues from contracts with customer		1,018,000	989,000	2,918,000	2,789,000
Interchange revenue from debit card transactions
Non-interest income:
Revenues from contracts with customer		$ 1,141,000	$ 1,126,000	$ 3,468,000	$ 3,462,000

[1] Effective January 1, 2023, the allowance calculation is based upon Current Expected Credit loss methodology. Prior to January 1, 2023, the allowance calculation was based upon incurred loss methodology. Refer to Note 1 for further discussion.