Parent Company Financial Information - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Assets
Cash	$ 24,464
Other assets	468	$ 390
Total assets	358,956	351,813
Stockholders' equity:
Common stock	2,901	2,883
Surplus	11,037	10,964
Retained earnings	22,882	23,859
Accumulated other comprehensive loss, net of benefits	(19,003)	(18,381)
Total stockholders' equity	17,817	19,325	$ 16,054
Total liabilities and stockholders' equity	358,956	351,813
Glen Burnie Bancorp
Assets
Cash	32	88	$ 77
Investment in The Bank of Glen Burnie	17,726	19,227
Other assets	59	10
Total assets	17,817	19,325
Stockholders' equity:
Common stock	2,901	2,883
Surplus	11,037	10,964
Retained earnings	22,882	23,859
Accumulated other comprehensive loss, net of benefits	(19,003)	(18,381)
Total stockholders' equity	17,817	19,325
Total liabilities and stockholders' equity	$ 17,817	$ 19,325