Parent Company Financial Information - Statements of Cash Flows (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net income	$ 167,000	$ 552,000	$ 275,000	$ 435,000	$ 830,000	$ 375,000	$ 309,000	$ 231,000	$ 1,429,094	$ 1,745,182
Adjustments to reconcile net income to net cash provided by operating activities:
Increase in other assets									(106,000)	215,000
Net cash provided by operating activities									1,399,000	2,225,000
Cash flows from financing activities:
Dividends paid									(1,149,000)	(1,143,000)
Net cash used in financing activities									(33,910,000)	(41,328,000)
Increase (decrease) in cash									(14,851,000)	(32,089,000)
Cash, end of year	15,241,000								15,241,000
Glen Burnie Bancorp
Cash flows from operating activities:
Net income									1,429,000	1,745,000
Adjustments to reconcile net income to net cash provided by operating activities:
Increase in other assets									(8,000)
Change in undistributed equity of subsidiary									(381,000)	(739,000)
Net cash provided by operating activities									1,040,000	1,006,000
Cash flows from financing activities:
Proceeds from dividend reinvestment plan									120,000	115,000
Dividends paid									(1,149,000)	(1,143,000)
Net cash used in financing activities									(1,029,000)	(1,028,000)
Increase (decrease) in cash									11,000	(22,000)
Cash, beginning of year				$ 77,000				$ 99,000	77,000	99,000
Cash, end of year	$ 88,000				$ 77,000				$ 88,000	$ 77,000