Loans and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) Loan contract	Dec. 31, 2019 USD ($) Loan contract	Dec. 31, 2018 USD ($) contract
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 2,582,000	$ 3,282,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	2,480,000	3,181,000
Financing Receivable, Modifications, Recorded Investment	$ 1,480,000	$ 2,238,000
Financing Receivable, Modifications, Number of Contracts | Loan	0	0
Entity Loan Modification Program [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 644,000	$ 43,000	$ 270,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	644,000	43,000	270,000
Financing Receivable, Modifications, Recorded Investment	$ 582,000	$ 43,000	$ 266,000
Financing Receivable, Modifications, Number of Contracts | contract	3	2	1
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Entity Loan Modification Program [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 3,000
Financing Receivable, Modifications, Post-Modification Recorded Investment		3,000
Financing Receivable, Modifications, Recorded Investment		$ 3,000
Financing Receivable, Modifications, Number of Contracts | contract		1
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 8,000	$ 3,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	8,000	3,000
Financing Receivable, Modifications, Recorded Investment	6,000	3,000
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	1,806,000	2,562,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,707,000	2,463,000
Financing Receivable, Modifications, Recorded Investment	933,000	1,705,000
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Entity Loan Modification Program [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	593,000		$ 270,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	593,000		270,000
Financing Receivable, Modifications, Recorded Investment	$ 535,000		$ 266,000
Financing Receivable, Modifications, Number of Contracts | contract	1		1
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 40,000	40,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	40,000	40,000
Financing Receivable, Modifications, Recorded Investment	31,000	40,000
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member] | Entity Loan Modification Program [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment		40,000
Financing Receivable, Modifications, Post-Modification Recorded Investment		40,000
Financing Receivable, Modifications, Recorded Investment		$ 40,000
Financing Receivable, Modifications, Number of Contracts | contract		1
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	728,000	$ 677,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	725,000	675,000
Financing Receivable, Modifications, Recorded Investment	510,000	$ 490,000
Residential Portfolio [Member] | Residential Mortgage [Member] | Entity Loan Modification Program [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	51,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	51,000
Financing Receivable, Modifications, Recorded Investment	$ 47,000
Financing Receivable, Modifications, Number of Contracts | contract	2