Merger with Pioneer Bancshares, Inc. - Supplemental Pro Forma Information (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) $ / shares
Business Combination and Asset Acquisition [Abstract]
Net interest income	$ 51,436
Provision for credit losses	2,850
Net interest income after provision for credit losses	48,586
Noninterest income	25,120
Noninterest expenses	42,648
Income before income taxes	31,058
Provision for income taxes	5,810
Net income	25,248
Earnings per share:
Net income available to common stockholders, basic	25,248
Net income available to common stockholders, diluted	$ 25,248
Basic (in dollars per share) | $ / shares	$ 1.02
Diluted (in dollars per share) | $ / shares	$ 0.99