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v3.21.1

Subsequent Event (Details) |  | 12 Months Ended |
--- | --- | --- | ---
Mar. 03, 2021 USD ($) shares | Dec. 31, 2020 USD ($) Office | Dec. 31, 2019 USD ($)
Subsequent Event [Line Items] |  |  |
Assets |  | $ 1,933,315,000 | $ 1,559,235,000
Severn Bancorp, Inc. |  |  |
Subsequent Event [Line Items] |  |  |
Number of Community Banking Offices | Office |  | 7 |
Severn Bancorp, Inc. | Minimum |  |  |
Subsequent Event [Line Items] |  |  |
Assets |  | $ 950,000,000 |
Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Percentage of ownership Interests | 59.60% |  |
Subsequent Event | Severn Bancorp, Inc. |  |  |
Subsequent Event [Line Items] |  |  |
Percentage of ownership Interests | 40.40% |  |
Subsequent Event | Severn Bancorp, Inc. |  |  |
Subsequent Event [Line Items] |  |  |
Number of Shares to be Issued for each share | shares | 0.6207 |  |
Cash Payment for Each Share | $ 1.59 |  |

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