Borrowings (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Federal Home Loan Bank Advances | Minimum
Short-term Debt [Line Items]
Outstanding obligations interest rates	4.57%
Federal Home Loan Bank Advances | Maximum
Short-term Debt [Line Items]
Outstanding obligations interest rates	5.07%
Subordinated Debt.
Short-term Debt [Line Items]
Principal amount	$ 25.0
Recorded balance	24.7	$ 24.7
Unamortized fair value adjustment	2.4	2.4
Subordinated Debt. | Severn Bancorp, Inc.
Short-term Debt [Line Items]
Principal amount	20.6
Recorded balance	18.4	18.4
Federal Home Loan Bank Advances
Short-term Debt [Line Items]
Short-term Debt, Total	$ 131.5	$ 40.0