Parent Company Financial Information - Statements of Cash Flows (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 830,000	$ 375,000	$ 309,000	$ 231,000	$ 555,000	$ 888,000	$ 479,000	$ 594,000	$ 1,745,182	$ 2,516,387
Adjustments to reconcile net income to net cash provided by operating activities:
Increase in other assets									215,000	(244,000)
Net cash provided by operating activities									2,225,000	3,656,000
Cash flows from financing activities:
Dividends paid									(1,143,000)	(1,138,000)
Net cash used in financing activities									(41,328,000)	22,707,000
Net (decrease) increase in cash and cash equivalents									(32,089,000)	25,088,000
Cash, end of year	30,092,000								30,092,000
Glen Burnie Bancorp
Cash flows from operating activities:
Net income									1,745,000	2,516,000
Adjustments to reconcile net income to net cash provided by operating activities:
Increase in other assets										(3,000)
Change in undistributed equity of subsidiary									(739,000)	(1,517,000)
Net cash provided by operating activities									1,006,000	996,000
Cash flows from financing activities:
Proceeds from dividend reinvestment plan									115,000	130,000
Dividends paid									(1,143,000)	(1,138,000)
Net cash used in financing activities									(1,028,000)	(1,008,000)
Net (decrease) increase in cash and cash equivalents									(22,000)	(12,000)
Cash, beginning of year				$ 99,000				$ 111,000	99,000	111,000
Cash, end of year	$ 77,000				$ 99,000				$ 77,000	$ 99,000