Consolidated Statements Of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Activities
Net Income Available to Common Shareholders	$ 117,101,000	$ 114,365,000	$ 102,071,000
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and (accretion), net	8,984,000	6,165,000	10,451,000
Provision for credit losses	1,820,000	3,243,000	474,000
Depreciation of premises and equipment	4,215,000	4,556,000	5,325,000
Deferred income tax expense (benefit)	381,000	(2,764,000)	1,469,000
Net periodic employee benefit cost	62,000	52,000	256,000
Unrealized and realized securities losses	2,650,000	4,476,000	1,581,000
Stock-based compensation expense	3,522,000	3,213,000	3,276,000
Excess tax benefit from stock-compensation expense	387,000	228,000	(292,000)
Increase in value of bank-owned life insurance	(3,992,000)	(6,037,000)	(5,559,000)
Loans originated for sale	(10,107,000)	(11,159,000)	(31,150,000)
Proceeds from the sale of loans originated for sale	10,221,000	11,306,000	31,475,000
Gain on sale of loans	(114,000)	(147,000)	(325,000)
Change in accrued interest receivable	(360,000)	(1,136,000)	(2,660,000)
Change in other assets	5,036,000	14,422,000	(20,643,000)
Change in other liabilities	(7,910,000)	(3,203,000)	20,068,000
Net Cash Provided by Operating Activities	131,896,000	137,580,000	115,817,000
Investing Activities
Net increase in loans	(147,840,000)	(223,785,000)	(102,991,000)
Purchases	294,934,000	93,681,000	519,262,000
Proceeds from sales	33,394,000	205,627,000	0
Proceeds from maturities and calls	169,200,000	119,090,000	210,912,000
Purchases	(268,000)	(8,029,000)	(302,000)
Proceeds from sales	1,599,000	536,000	449,000
Proceeds from maturities and calls	0	780,000	0
Purchases of premises and equipment	(2,706,000)	(2,962,000)	(2,141,000)
Proceeds from the disposals of premises and equipment	98,000	283,000	190,000
Proceeds from bank-owned life insurance policies	1,541,000	10,856,000	6,045,000
Payments for low income housing tax credits	(12,344,000)	(8,051,000)	(3,352,000)
Acquisition of Citizens Commerce Bancshares, Inc.	0	14,016,000	0
Net Cash (Used in) Provided by Investing Activities	(252,260,000)	14,680,000	(410,452,000)
Financing Activities
Net increase (decrease) in noninterest-bearing deposits	1,645,000	(68,906,000)	(21,710,000)
Net increase (decrease) in interest-bearing deposits	208,353,000	(165,414,000)	(33,677,000)
Net (decrease) increase in short-term borrowings	(9,201,000)	37,392,000	(21,494,000)
Proceeds from long-term debt	50,000,000	100,000,000	0
Purchases of treasury stock	(17,896,000)	(60,134,000)	(26,449,000)
Proceeds from exercise of stock options	694,000	0	798,000
Other financing activities	(636,000)	1,071,000	(762,000)
Dividends paid	(43,482,000)	(39,993,000)	(36,702,000)
Net Cash Provided by (Used in) Financing Activities	189,477,000	(195,984,000)	(139,996,000)
Increase (Decrease) in Cash and Cash Equivalents	69,113,000	(43,724,000)	(434,631,000)
Cash and cash equivalents at beginning of period	156,276,000	200,000,000	634,631,000
Cash and Cash Equivalents at End of Period	225,389,000	156,276,000	200,000,000
Supplemental Cash Flow Information [Abstract]
Interest paid	83,804,000	49,134,000	9,467,000
Income taxes paid	28,040,000	32,813,000	22,434,000
Goodwill	149,762,000	149,902,000	108,941,000
Core deposit intangible	10,282,000	12,666,000	6,793,000
Citizens Commerce Bancshares, Inc.
Identifiable assets acquired (net of purchase consideration)	0	320,099,000	0
Liabilities assumed	0	307,617,000	0
Goodwill	0	40,821,000	0
Citizens Commerce Bancshares, Inc. | Core Deposits
Core deposit intangible	$ 0	$ 8,278,000	$ 0