Commitments and Contingencies (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Commitments to extend credit
Disclosure Of Financial Instruments Indicated [Line Items]
Contractual obligation	$ 5,920,300	$ 5,680,438
Standby letters of credit
Disclosure Of Financial Instruments Indicated [Line Items]
Contractual obligation	54,532	65,154
Forward commitments to sell loans
Disclosure Of Financial Instruments Indicated [Line Items]
Contractual obligation	$ 8,495	$ 10,008