XML 17 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2021
May 13, 2021
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2021  
Document Transition Report false  
Entity File Number 000-55983  
Entity Registrant Name Meridian Corp  
Entity Incorporation, State or Country Code PA  
Entity Tax Identification Number 83-1561918  
Entity Address, Address Line One 9 Old Lincoln Highway  
Entity Address, City or Town Malvern  
Entity Address, State or Province PA  
Entity Address, Postal Zip Code 19355  
City Area Code 484  
Local Phone Number 568-5000  
Title of 12(b) Security Common Stock, $1 par value  
Trading Symbol MRBK  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   6,171,550
Entity Central Index Key 0001750735  
Amendment Flag false  
Document Fiscal Year Focus 2021  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q1