Goodwill and Other Intangible Assets - Changes in Goodwill and Other Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Finite-lived Intangible Assets [Roll Forward]
Other intangible assets, beginning of period	$ 97,242
Amortization	(3,527)	$ (3,850)
Other intangible assets, end of period	93,714		$ 97,242
Core deposit premiums:
Finite-lived Intangible Assets [Roll Forward]
Other intangible assets, beginning of period	87,575	101,344	101,344
Amortization	(3,120)		(13,769)
Other intangible assets, end of period	84,455		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	(408)		(1,634)
Other intangible assets, end of period	$ 9,259		$ 9,667