EARNINGS PER SHARE - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net earnings attributable to Guaranty Bancshares, Inc.	$ 6,297	$ 10,903	$ 24,159	$ 32,425
Denominator:
Weighted-average shares outstanding (basic)	11,568,897	11,907,233	11,746,630	11,994,105
Effect of dilutive securities:
Common stock equivalent shares from stock options	50,445	125,158	44,573	125,344
Weighted-average shares outstanding (diluted)	11,619,342	12,032,391	11,791,204	12,119,449
Net earnings attributable to Guaranty Bancshares, Inc. per share
Basic	$ 0.54	$ 0.92	$ 2.06	$ 2.7
Diluted	$ 0.54	$ 0.91	$ 2.05	$ 2.68