Document and Entity Information
Document and Entity Information | Apr. 20, 2022 |
Document Information [Line Items] | |
Document Type | 8-K |
Amendment Flag | false |
Document Period End Date | Apr. 20, 2022 |
Entity Registrant Name | MainStreet Bancshares, Inc. |
Entity Central Index Key | 0001693577 |
Entity File Number | 001-38817 |
Entity Incorporation, State or Country Code | VA |
Entity Tax Identification Number | 81-2871064 |
Entity Address, Address Line One | 10089 Fairfax Boulevard |
Entity Address, City or Town | Fairfax |
Entity Address, State or Province | VA |
Entity Address, Postal Zip Code | 22030 |
City Area Code | 703 |
Local Phone Number | 481-4567 |
Written Communications | false |
Soliciting Material | false |
Pre-commencement Tender Offer | false |
Pre-commencement Issuer Tender Offer | false |
Entity Emerging Growth Company | true |
Entity Ex Transition Period | true |
Common Stock [Member] | |
Document Information [Line Items] | |
Security12b Title | Common Stock |
Trading Symbol | MNSB |
Security Exchange Name | NASDAQ |
Depositary Shares [Member] | |
Document Information [Line Items] | |
Security12b Title | Depositary Shares (each representing a 1/40th interest in a share of 7.50% Series A Fixed-Rate Non-Cumulative Perpetual Preferred Stock |
Trading Symbol | MNSBP |
Security Exchange Name | NASDAQ |