Other Borrowings and Subordinated Notes and Debentures - Schedule of Debt Components (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Sep. 30, 2025	Mar. 31, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Total other borrowings and subordinated debt		$ 762,456	$ 619,967
Fair Value Hedges
Debt Instrument [Line Items]
Valuation adjustments on hedged subordinated notes payable		(5,568)	(3,455)
FHLB advances, net of discount, due 2026 to 2032, 3.75% to 5.53% secured by real estate loans
Debt Instrument [Line Items]
Total other borrowings and subordinated debt		431,552	286,597
Other long-term debt
Debt Instrument [Line Items]
Total other borrowings and subordinated debt		15,204	15,656
Total other borrowings
Debt Instrument [Line Items]
Total other borrowings and subordinated debt		446,756	302,253
Subordinated notes
Debt Instrument [Line Items]
Fixed rate (as percent)	6.25%
Floating rate (as percent)	3.02%
Subordinated notes | Subordinated notes payable, due 10/1/2035, fixed-to-floating rate (fixed rate of 6.25% through 9/30/2030, floating rate of 3.02% above the three-month SOFR rate, reset quarterly)
Debt Instrument [Line Items]
Long-term debt, gross		$ 325,000	325,000
Fixed rate (as percent)		6.25%
Floating rate (as percent)		3.02%
Total subordinated notes and debentures
Debt Instrument [Line Items]
Total other borrowings and subordinated debt		$ 315,700	317,714
Unamortized debt issuance costs		$ (3,732)	$ (3,831)
Minimum | FHLB advances, net of discount, due 2026 to 2032, 3.75% to 5.53% secured by real estate loans
Debt Instrument [Line Items]
Fixed rate (as percent)		3.75%
Maximum | FHLB advances, net of discount, due 2026 to 2032, 3.75% to 5.53% secured by real estate loans
Debt Instrument [Line Items]
Fixed rate (as percent)		5.53%