DOCUMENT AND ENTITY INFORMATION - shares	6 Months Ended
	Jun. 30, 2020	Aug. 03, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Trading Symbol	GNTY
Entity Registrant Name	GUARANTY BANCSHARES, INC.
Entity Central Index Key	0001058867
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Common Stock, Shares Outstanding		11,014,283
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity File Number	001-38087
Entity Tax Identification Number	75-1656431
Entity Address, Address Line One	16475 Dallas Parkway, Suite 600
Entity Address, City or Town	Addison
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75001
City Area Code	888
Local Phone Number	572 - 9881
Entity Shell Company	false
Title of 12(b) Security	Common Stock, par value $1.00 per share
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	TX
Document Quarterly Report	true
Document Transition Report	false