Parent Company Financial Information - Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Other assets	$ 308	$ 556
Total Assets	384,942	413,046
Liabilities and Stockholders' Equity
Total Liabilities	349,262	378,995
STOCKHOLDERS' EQUITY
Common stock	2,827	2,814
Surplus	10,525	10,401
Retained earnings	22,537	22,066
Accumulated other comprehensive income (loss), net of benefits	(209)	(1,230)
Total Stockholders' Equity	35,680	34,051	$ 34,042
Total Liabilities and Stockholders' Equity	384,942	413,046
Glen Burnie Bancorp
ASSETS
Cash and cash equivalents	43	135	$ 233
Investment	35,637	33,893
Other assets		2
Total Assets	35,680	34,051
STOCKHOLDERS' EQUITY
Common stock	2,827	2,814
Surplus	10,525	10,401
Retained earnings	22,537	22,066
Accumulated other comprehensive income (loss), net of benefits	(209)	(1,230)
Total Stockholders' Equity	35,680	34,051
Total Liabilities and Stockholders' Equity	$ 35,680	34,051
Glen Burnie Bancorp | Gbb Properties Inc
ASSETS
Investment		$ 21