Borrowed Funds - Additional Information (Details) - USD ($)					1 Months Ended		12 Months Ended
	Dec. 15, 2022	Sep. 20, 2022	May 28, 2021	Apr. 01, 2021	Jun. 30, 2021	Aug. 31, 2016	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Weighted average interest rate for short-term borrowings							1.60%	0.37%
Payments of FHLB borrowings					$ 247,500,000
Loss on extinguishment of debt							$ 0	$ 8,406,000	$ 12,036,000
FHLB advances callable for early redemption							0
Subordinated notes, interest rate			3.00%
Fair value of securities							$ 1,100,000,000	1,700,000,000
Derivative—interest rate swaps:
Debt Instrument [Line Items]
Notional amount of terminated derivative						$ 125,000,000
Derivative—interest rate swaps: | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Subordinated debt basis points					2.187%
USAmeriBancorp, Inc.
Debt Instrument [Line Items]
Subordinated notes		$ 150,000,000		$ 60,000,000
Subordinated notes, interest rate		6.25%		6.25%
Subordinated debt initial term							5 years
Subordinated debt SOFR term							3 months
FHLB
Debt Instrument [Line Items]
Loss on extinguishment of debt								8,400,000
Subordinated Debt
Debt Instrument [Line Items]
Subordinated debt initial term							5 years
Subordinated debt SOFR term							3 months
Subordinated Debt | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Subordinated debt basis points	2.36%	2.78%					5.14%
FHLB
Debt Instrument [Line Items]
Weighted average interest rate for long-term borrowings							1.88%
Effective interest rate					1.82%
Subordinated Notes Due September 2023
Debt Instrument [Line Items]
Effective interest rate						3.32%
Subordinated notes							$ 125,000,000
Subordinated notes, interest rate							5.125%
Net carrying value of subordinated debentures							$ 126,600,000	128,600,000
Subordinated Notes Due June 2025
Debt Instrument [Line Items]
Subordinated notes							$ 100,000,000
Subordinated notes, interest rate							4.55%
Net carrying value of subordinated debentures							$ 99,700,000	99,600,000
Subordinated Notes Due June 2030
Debt Instrument [Line Items]
Subordinated notes							$ 115,000,000
Subordinated notes, interest rate							5.25%
Net carrying value of subordinated debentures		$ 147,600,000					$ 113,600,000	113,400,000
Subordinated Notes Due June 2031
Debt Instrument [Line Items]
Subordinated notes					$ 300,000,000		$ 300,000,000
Subordinated notes, interest rate							3.00%
Net carrying value of subordinated debentures							$ 267,100,000	$ 293,000,000
FHLB
Debt Instrument [Line Items]
Amount of hedged debt							$ 500,000,000