Goodwill and Other Intangible Assets - Schedule of Changes in Goodwill and Other Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Finite-lived Intangible Assets [Roll Forward]
Other intangible assets, beginning of period			$ 97,242
Amortization	$ (3,097)	$ (3,851)	(9,722)	$ (11,553)
Other intangible assets, end of period	87,520		87,520		$ 97,242
Core deposit premiums:
Finite-lived Intangible Assets [Roll Forward]
Other intangible assets, beginning of period			87,575	101,344	101,344
Amortization			(8,497)		(13,769)
Other intangible assets, end of period	79,078		79,078		87,575
Books of business and other intangibles:
Finite-lived Intangible Assets [Roll Forward]
Other intangible assets, beginning of period			9,667	$ 11,301	11,301
Amortization			(1,225)		(1,634)
Other intangible assets, end of period	$ 8,442		$ 8,442		$ 9,667