Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Mar. 21, 2019	Jun. 30, 2018
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
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Well-Known Seasoned Issuer	No
Entity Shell Company	false
Entity Common Stock Shares Outstanding		2,817,821
Entity Public Float			$ 24,570,796
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	false