EARNINGS PER SHARE - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net earnings attributable to Guaranty Bancshares, Inc.	$ 9,581	$ 10,784	$ 17,862	$ 21,522
Denominator:
Weighted-average shares outstanding (basic)	11,735,475	11,968,227	11,836,970	12,038,261
Effect of dilutive securities:
Common stock equivalent shares from stock options	21,037	130,756	44,464	135,252
Weighted-average shares outstanding (diluted)	11,756,512	12,098,983	11,881,434	12,173,513
Net earnings attributable to Guaranty Bancshares, Inc. per share
Basic	$ 0.82	$ 0.9	$ 1.51	$ 1.79
Diluted	$ 0.81	$ 0.89	$ 1.5	$ 1.77