Business Combinations - Narrative (Details) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	Oct. 01, 2025 USD ($) branch $ / shares	Jul. 11, 2025 USD ($) branch $ / shares	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Business Combination [Line Items]
Goodwill			$ 754,645		$ 754,645			$ 732,417
Allowance for credit losses			147,453	$ 140,469	147,453	$ 140,469	$ 142,184	$ 138,055	$ 141,641	$ 148,931
Allowance on PCD Loans Acquired During the Period			106		106
Merger-related charges			$ 10,808	$ 0	$ 14,281	$ 0
Heartland Bancshares, Inc
Business Combination [Line Items]
Number of branches operated | branch		4
Percentage of common stock acquired		100.00%
Total consideration		$ 111,224
Goodwill		22,228
Book value of loans with deterioration of credit quality		7,200
Fair value of loans with deterioration of credit quality		6,400
Allowance for credit losses		2,000
Allowance on PCD Loans Acquired During the Period		$ 100
Intangible assets weighted average useful life		10 years
Loans acquired		$ 153,294
Deposits acquired		$ 705,195
Per share cash consideration for shares receiving cash (in dollars per share) | $ / shares		$ 147.10
Per share exchange ratio for shares receiving stock		4.9263
Heartland Bancshares, Inc | Acquired Non-PCD Loans
Business Combination [Line Items]
Allowance for credit losses		$ 1,900
Villages Bancorporation, Inc. | Subsequent Event
Business Combination [Line Items]
Number of branches operated | branch	19
Percentage of common stock acquired	100.00%
Total consideration	$ 829,145
Loans acquired	1,300,000
Deposits acquired	$ 3,400,000
Per share cash consideration for shares receiving cash (in dollars per share) | $ / shares	$ 1,000
Per share exchange ratio for shares receiving stock	38.5000
Acquiree shares receiving cash consideration	25.00%
Acquiree shares receiving stock consideration	75.00%
Common stock threshold of outstanding stock that will receive preferred stock	9.75%