Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Mar. 15, 2020	Jun. 30, 2019
Document And Entity Information [Abstract]
Entity Registrant Name	GLEN BURNIE BANCORP
Entity Central Index Key	0000890066
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Well-Known Seasoned Issuer	No
Entity Shell Company	false
Entity Common Stock Shares Outstanding		2,830,358
Entity Public Float			$ 25,027,142
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Entity Interactive Data Current	Yes
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	false