Regulatory Matters (Details)	Dec. 31, 2022	Dec. 31, 2021
Tier 1 leverage ratio (as a percent)	0.0813	0.0939
Tier 1 leverage ratio, well-capitalized minimum (as a percent)	0.0500
Common tier 1 risk-based capital ratio (as a percent)	0.0877	0.1083
Common tier risk-based capital ratio, well-capitalized minimum (as a percent)	0.0650
Tier 1 risk-based capital ratio (as a percent)	0.0877	0.1083
Tier 1 risk-based capital ratio, well-capitalized minimum (as a percent)	0.0800
Total risk-based capital ratio (as a percent)	0.1205	0.1481
Total risk-based capital ratio, well-capitalized minimum (as a percent)	0.1000
Meridian Bank
Tier 1 leverage ratio (as a percent)	0.0995	0.1151
Common tier 1 risk-based capital ratio (as a percent)	0.1073	0.1327
Tier 1 risk-based capital ratio (as a percent)	0.1073	0.1327
Total risk-based capital ratio (as a percent)	0.1187	0.1463