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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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	$ 11,548	$ 10,470	$ 11,047	$ 9,972
Charge-offs	(147)	(1,099)	(256)	(1,412)
Recoveries	242	129	503	493
Provision for loan losses	333	269	682	716
ALL Ending Balance	11,976	9,769	11,976	9,769
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	2,775	3,976	2,780	3,699
Charge-offs		(889)		(889)
Recoveries	1	1	30	60
Provision for loan losses	(41)	215	(75)	433
ALL Ending Balance	2,735	3,303	2,735	3,303
Acquisition and Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	2,338	1,160	1,721	1,257
Charge-offs		(7)	(29)	(98)
Recoveries	99	44	111	258
Provision for loan losses	857	(25)	1,491	(245)
ALL Ending Balance	3,294	1,172	3,294	1,172
Commercial and industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	1,125	860	1,187	869
Charge-offs	(5)	(10)	(5)	(10)
Recoveries	25	13	76	31
Provision for loan losses	2	(77)	(111)	(104)
ALL Ending Balance	1,147	786	1,147	786
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	4,497	3,678	4,544	3,444
Charge-offs	(74)	(86)	(86)	(240)
Recoveries	87	27	195	65
Provision for loan losses	(529)	125	(672)	475
ALL Ending Balance	3,981	3,744	3,981	3,744
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL Beginning Balance	313	296	315	203
Charge-offs	(68)	(107)	(136)	(175)
Recoveries	30	44	91	79
Provision for loan losses	44	31	49	157
ALL Ending Balance	319	264	319	264
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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