Parent Company Financial Information - Statements of Cash Flows (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities:
Net (loss) income	$ (40,000)	$ 129,000	$ (204,000)	$ 3,000	$ 167,000	$ 552,000	$ 275,000	$ 435,000	$ (111,563)	$ 1,429,094
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Increase in other assets									(60,000)	(106,000)
Net cash provided by operating activities									28,000	1,399,000
Cash flows from financing activities:
Dividends paid									(865,000)	(1,149,000)
Net cash used in financing activities									8,348,000	(33,910,000)
(Decrease) increase in cash									9,223,000	(14,851,000)
Cash, end of year	24,464,000								24,464,000
Glen Burnie Bancorp
Cash flows from operating activities:
Net (loss) income									(112,000)	1,429,000
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Increase in other assets									(48,000)	(8,000)
Change in undistributed equity of subsidiary									879,000	(381,000)
Net cash provided by operating activities									719,000	1,040,000
Cash flows from financing activities:
Proceeds from dividend reinvestment plan									91,000	120,000
Dividends paid									(865,000)	(1,149,000)
Net cash used in financing activities									(774,000)	(1,029,000)
(Decrease) increase in cash									(55,000)	11,000
Cash, beginning of year				$ 88,000				$ 77,000	88,000	77,000
Cash, end of year	$ 32,000				$ 88,000				$ 32,000	$ 88,000