Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Mar. 31, 2022
Finite Lived Intangible Assets [Line Items]
Goodwill, net	$ 140,412	$ 140,412
Delta Bancshares Company
Finite Lived Intangible Assets [Line Items]
Goodwill, net	$ 28,558		$ 28,200	$ 28,600