Merger with Pioneer Bancshares, Inc. - Supplemental Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]
Net interest income	$ 251,783	$ 201,501
Provision for credit losses	17,200	350
Net interest income after provision for credit losses	234,583	201,151
Noninterest income	90,993	129,373
Noninterest expenses	229,307	258,544
Income before income taxes	96,269	71,980
Provision for income taxes	19,508	13,413
Net income	76,761	58,567
Earnings per share:
Net income available to common stockholders, basic	76,761	58,567
Net income available to common stockholders, diluted	$ 76,761	$ 58,567
Basic (in dollars per share)	$ 3.09	$ 2.36
Diluted (in dollars per share)	$ 3.01	$ 2.30