Parent Company Financial Information - Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Other assets	$ 383	$ 362
Total Assets	442,066	419,486
Liabilities and Stockholders' Equity
Total Liabilities	406,350	382,393
STOCKHOLDERS' EQUITY
Common stock	2,854	2,842
Surplus	10,759	10,640
Retained earnings	22,977	23,071
Accumulated other comprehensive income (loss), net of benefits	(874)	540
Total Stockholders' Equity	35,716	37,093	$ 35,680
Total Liabilities and Stockholders' Equity	442,066	419,486
Glen Burnie Bancorp
ASSETS
Cash and cash equivalents	99	111	$ 43
Investment in The Bank of Glen Burnie	35,614	36,982
Other assets	3
Total Assets	35,716	37,093
STOCKHOLDERS' EQUITY
Common stock	2,854	2,842
Surplus	10,759	10,640
Retained earnings	22,977	23,071
Accumulated other comprehensive income (loss), net of benefits	(874)	540
Total Stockholders' Equity	35,716	37,093
Total Liabilities and Stockholders' Equity	$ 35,716	$ 37,093