Investment Securities (Amortized Cost and Fair Value of Investment Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities And Available-for-sale Securities [Line Items]
Amortized cost: Total available-for-sale debt securities	$ 180,557	$ 184,196
Gross unrealized gains: Available-for-sale debt securities	4,698	1,533
Gross unrealized losses: Available-for-sale debt securities	(138)	(2,919)
Fair value: Available-for-sale debt securities	185,117	182,810
Agency - GSE [Member]
Schedule of Held-to-maturity Securities And Available-for-sale Securities [Line Items]
Amortized cost: Total available-for-sale debt securities	5,941	5,926
Gross unrealized gains: Available-for-sale debt securities	218	8
Gross unrealized losses: Available-for-sale debt securities		(17)
Fair value: Available-for-sale debt securities	6,159	5,917
Obligations Of States And Political Subdivisions [Member]
Schedule of Held-to-maturity Securities And Available-for-sale Securities [Line Items]
Amortized cost: Total available-for-sale debt securities	51,857	51,603
Gross unrealized gains: Available-for-sale debt securities	2,871	1,259
Gross unrealized losses: Available-for-sale debt securities	(10)	(287)
Fair value: Available-for-sale debt securities	54,718	52,575
MBS - GSE Residential [Member]
Schedule of Held-to-maturity Securities And Available-for-sale Securities [Line Items]
Amortized cost: Total available-for-sale debt securities	122,759	126,667
Gross unrealized gains: Available-for-sale debt securities	1,609	266
Gross unrealized losses: Available-for-sale debt securities	(128)	(2,615)
Fair value: Available-for-sale debt securities	$ 124,240	$ 124,318

Schedule of Held-to-maturity Securities And Available-for-sale Securities [Line Items]

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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