Loans And The Allowance For Loan Losses (Data, At Class Level, Of Credit Quality Indicators Of Certain Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2017		Dec. 31, 2016	Mar. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 944,632		$ 941,729	$ 796,170
Total Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	751,247		742,941
Commercial Real Estate [Member] | Total Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	560,045	[1]	555,625	474,898	[1]
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Corporate Credit Exposure—By Credit Rating 1-3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	456,099		454,755
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Corporate Credit Exposure—By Credit Rating 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	82,894		80,196
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Corporate Credit Exposure—By Credit Rating 5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	6,641		12,506
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Corporate Credit Exposure—By Credit Rating 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	14,411		8,168
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Corporate Credit Exposure—By Credit Rating 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	95,757		93,240
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Construction [Member] | Corporate Credit Exposure—By Credit Rating 1-3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	80,643		82,520
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Construction [Member] | Corporate Credit Exposure—By Credit Rating 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	10,936		6,541
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Construction [Member] | Corporate Credit Exposure—By Credit Rating 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	4,178		4,179
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Construction [Member] | Corporate Credit Exposure—By Credit Rating 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	464,288		462,385
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Mortgages [Member] | Corporate Credit Exposure—By Credit Rating 1-3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	375,456		372,235
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Mortgages [Member] | Corporate Credit Exposure—By Credit Rating 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	71,958		73,655
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Mortgages [Member] | Corporate Credit Exposure—By Credit Rating 5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	6,641		12,506
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Mortgages [Member] | Corporate Credit Exposure—By Credit Rating 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	10,233		3,989
Commercial Real Estate [Member] | Total Real Estate Loans [Member] | Mortgages [Member] | Corporate Credit Exposure—By Credit Rating 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	192,041		197,371	$ 150,813
Commercial And Industrial [Member] | Corporate Credit Exposure—By Credit Rating 1-3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	123,648		121,414
Commercial And Industrial [Member] | Corporate Credit Exposure—By Credit Rating 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	55,746		59,117
Commercial And Industrial [Member] | Corporate Credit Exposure—By Credit Rating 5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	9,264		12,623
Commercial And Industrial [Member] | Corporate Credit Exposure—By Credit Rating 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	2,570		3,404
Commercial And Industrial [Member] | Corporate Credit Exposure—By Credit Rating 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 813		$ 813

[1] Includes construction loans