Document and Entity Information
Document and Entity Information | Jan. 21, 2022 |
Document Information [Line Items] | |
Document Type | 8-K/A |
Amendment Flag | true |
Amendment Description | On January 20, 2022, MainStreet Bancshares, Inc. issued a press release regarding our unaudited furnished financial results for the fourth quarter and year-ended December 31, 2021 (the “Original Press Release”). A copy of the Original Press Release was furnished as Exhibit 99.1 to our Current Report on Form 8-K dated January 20, 2022 (the “Original Form 8-K”). On January 21, 2022, we issued a second press release (the “Corrected Press Release”) to correct an inadvertent error regarding the reported net interest margin of 3.61%, rather than 3.33%. The accompanying tables also were changed in the Corrected Press Release to correct the fourth quarter and year-ended net interest margin. No other changes to the Original Press Release have been made. |
Document Period End Date | Jan. 21, 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 |