Loans and Allowance for Credit Losses (Narrative) (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022 USD ($) contract item	Mar. 31, 2021 contract	Dec. 31, 2021 USD ($) item
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, modifications, number of contracts | contract	0	0
Financing receivable, modifications. subsequently defaulted within 12 months | contract	0	0
Financing receivable, recorded investment, doubtful	$ 0		$ 0
Financing receivable, recorded investment, nonaccrual status	2,848		2,004
Mortgage loans in process of foreclosure, amount	198		203
Loans and leases receivable, net amount, total	2,166,396		2,105,231
Other real estate owned, net	$ 561		$ 532
Allowance from loan losses, as a percentage of total loans	0.67%		0.66%
Allowance from loan losses excluding PPP loans, as a percentage of total loans	0.92%		0.93%
Cares Act And Consolidated Appropriates Act Paycheck Protection Program [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Amount of Loans Authorized			$ 27,600
Small Business Administration (SBA), CARES Act, Paycheck Protection Program [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Amount of Loans Authorized	$ 14,900
Federal National Mortgage Association
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and leases receivable, net amount, total	336,500
Federal Home Loan Mortgage Corporation
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and leases receivable, net amount, total	75,900
Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, recorded investment, nonaccrual status	1,546		803
Mortgage loans in process of foreclosure, amount	$ 297		$ 311
Number of residential real estate property | item	2		1
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, recorded investment, nonaccrual status	$ 15
Northwest Bank Branches [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Deferred fees	795		$ 1,200
Discounts On Acquired Loans	480		516
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financing Receivable Net of Allowance	36,500		39,900
Severn Bancorp, Inc.
Financing Receivable, Allowance for Credit Losses [Line Items]
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financing Receivable Net of Allowance	506,500		553,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financing Receivable, Related Discount	8,000		8,400
Financing Receivable, Amount of Loans Authorized			9,200
Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, recorded investment, nonaccrual status	$ 2,800		$ 2,000