Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Interest income
Interest and fees on loans	$ 197,778	$ 197,274	$ 392,871	$ 390,500
Interest Income, Securities, Operating, Taxable	15,879	13,992	31,175	28,223
Nontaxable interest and dividends on securities	2	2	3	3
Interest on loans held for sale	140	199	232	303
Interest on federal funds sold and short-term investments	4,393	397	5,831	880
Total interest and dividend income	218,192	211,864	430,112	419,909
Interest expense
Interest on deposits	59,843	61,469	119,279	115,789
Interest on borrowings	10,853	12,469	17,832	28,755
Interest Expense, Operating, Total	70,696	73,938	137,111	144,544
Net interest income	147,496	137,926	293,001	275,365
Net interest income after provision for credit losses	140,296	133,676	270,801	266,115
Noninterest income
Deposit account fees	7,141	6,332	14,194	12,560
Interchange and ATM fees	4,997	4,753	9,619	9,205
Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions	11,380	10,987	22,600	20,928
Mortgage banking income	1,072	1,320	1,813	2,116
Bank Owned Life Insurance Income	2,038	2,000	4,103	3,928
Gain Realized on Life Insurance Policies	(1,650)	0	(1,650)	(263)
Loan level derivative income	66	473	1,108	553
Other noninterest income	5,964	6,465	11,760	12,720
Total noninterest income	34,308	32,330	66,847	62,273
Noninterest expenses
Salaries and employee benefits	62,856	57,162	124,787	114,336
Occupancy and equipment expenses	13,158	12,472	27,017	25,939
Data processing & facilities management	2,783	2,405	5,425	4,888
Software Maintenance	5,166	4,475	10,193	8,569
Debit card expense	1,984	1,602	3,919	4,080
Advertising Expense	1,797	1,826	3,242	2,986
Amortization of Intangible Assets	1,197	1,465	2,541	3,028
Business Combination, Acquisition-Related Cost, Expense	2,239	0	3,394	0
FDIC assessment	2,373	2,694	5,361	5,676
Other noninterest expenses	14,227	13,516	26,682	26,574
Total noninterest expenses	108,798	99,614	214,676	199,501
Income before income taxes	65,806	66,392	122,972	128,887
Current Federal, State and Local, Tax Expense (Benefit)	14,705	15,062	27,447	29,787
Net income	$ 51,101	$ 51,330	$ 95,525	$ 99,100
Basic earnings per share (in dollars per share)	$ 1.20	$ 1.21	$ 2.24	$ 2.33
Diluted earnings per share (in dollars per share)	$ 1.20	$ 1.21	$ 2.24	$ 2.33
Weighted average common shares (basic) (in shares)	42,623,978	42,468,658	42,587,330	42,511,186
Common shares equivalents (in shares)	17,153	4,308	19,753	8,592
Weighted average common shares (diluted) (in shares)	42,641,131	42,472,966	42,607,083	42,519,778
Common Stock, Dividends, Per Share, Cash Paid				$ 1.14
Cash dividends declared per common share (in dollars per share)	$ 0.59	$ 0.57	$ 1.18	$ 1.14
Provision for Loan and Lease Losses	$ 7,200	$ 4,250	$ 22,200	$ 9,250
Professional Fees	1,018	1,997	2,115	3,425
Retained Earnings [Member]
Noninterest expenses
Net income	$ 51,101	$ 51,330	$ 95,525	$ 99,100