EARNINGS PER SHARE - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Numerator:
Net earnings attributable to Guaranty Bancshares, Inc.	$ 31,537	$ 30,037	$ 40,447
Denominator:
Weighted-average shares outstanding (basic)	11,456,540	11,693,761	11,980,209
Effect of dilutive securities:
Common stock equivalent shares from stock options	46,142	44,844	112,638
Weighted-average shares outstanding (diluted)	11,502,682	11,738,605	12,092,847
Net earnings attributable to Guaranty Bancshares, Inc. per share
Basic	$ 2.75	$ 2.57	$ 3.38
Diluted	$ 2.74	$ 2.56	$ 3.34