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Loans and Related Allowance for Loan Losses (Allowance for Loan Losses Summarized by Loan Portfolio Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	$ 11,976	$ 9,769	$ 11,047	$ 9,972
Charge-offs	(146)	(257)	(402)	(1,669)
Recoveries	154	340	657	833
Provision for loan losses	(13)	471	669	1,187
ALL Ending Balance	11,971	10,323	11,971	10,323
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	2,735	3,303	2,780	3,699
Charge-offs				(889)
Recoveries	37		67	60
Provision for loan losses	(87)	(490)	(162)	(57)
ALL Ending Balance	2,685	2,813	2,685	2,813
Acquisition and Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	3,294	1,172	1,721	1,257
Charge-offs			(29)	(98)
Recoveries	21	32	132	290
Provision for loan losses	65	291	1,556	46
ALL Ending Balance	3,380	1,495	3,380	1,495
Commercial and industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	1,147	786	1,187	869
Charge-offs	(70)	(22)	(75)	(32)
Recoveries	1	13	77	44
Provision for loan losses	117	224	6	120
ALL Ending Balance	1,195	1,001	1,195	1,001
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	3,981	3,744	4,544	3,444
Charge-offs		(113)	(86)	(353)
Recoveries	64	258	259	323
Provision for loan losses	(146)	329	(818)	804
ALL Ending Balance	3,899	4,218	3,899	4,218
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	319	264	315	203
Charge-offs	(76)	(122)	(212)	(297)
Recoveries	31	37	122	116
Provision for loan losses	38	117	87	274
ALL Ending Balance	312	296	312	296
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	500	500	500	500
ALL Ending Balance	$ 500	$ 500	$ 500	$ 500

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