Basis of Presentation - Narrative (Details) $ in Thousands	Mar. 31, 2025 USD ($) branch	Dec. 31, 2024 USD ($)	Mar. 31, 2024 USD ($)
Business Acquisition [Line Items]
Number of full-service branches | branch	77
Total assets	$ 13,136,449	$ 13,157,482	$ 12,548,320
Total loans	9,621,005	9,450,442
Deposits	11,201,998	$ 11,210,434
Southern States Bancshares, Inc.
Business Acquisition [Line Items]
Total assets	2,851,145
Total loans	2,261,272
Deposits	$ 2,425,631