Investment Securities (Aggregate Unrealized Losses and Aggregate Fair Value of Underlying Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Securities [Line Items]
Held-to-maturity Securities, Fair Value	$ 18,605	$ 32,114
Held-to-maturity Securities, Unrealized Losses	(325)	(1,075)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months		3,932
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months		(46)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months	18,605	28,182
Held-to-maturity Securities, Unrealized Loss More Than 12 Months	(325)	(1,029)
Available-for-sale Securities, Fair Value	75,770	86,643
Available-for-sale Securities, Unrealized Loss	(1,318)	(2,122)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	1,020	2,035
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(20)	(7)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	74,750	84,608
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(1,298)	(2,115)
US Government Agency Obligations [Member]
Securities [Line Items]
Available-for-sale Securities, Fair Value	27,749	37,723
Available-for-sale Securities, Unrealized Loss	(139)	(359)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	27,749	37,723
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(139)	(359)
Government Sponsored Entities (GSE) Mortgage-Backed Securities [Member]
Securities [Line Items]
Available-for-sale Securities, Fair Value	25,840	26,558
Available-for-sale Securities, Unrealized Loss	(605)	(1,005)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	25,840	26,558
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(605)	(1,005)
Collateralized Mortgage Obligations GSE [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value	1,081	1,132
Held-to-maturity Securities, Unrealized Losses	(21)	(27)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months	1,081	1,132
Held-to-maturity Securities, Unrealized Loss More Than 12 Months	(21)	(27)
Available-for-sale Securities, Fair Value	9,546	9,808
Available-for-sale Securities, Unrealized Loss	(363)	(441)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	9,546	9,808
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(363)	(441)
Corporate Bonds [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value	4,164	4,157
Held-to-maturity Securities, Unrealized Losses	(12)	(47)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months		1,887
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months		(15)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months	4,164	2,270
Held-to-maturity Securities, Unrealized Loss More Than 12 Months	(12)	(32)
Available-for-sale Securities, Fair Value	10,742	10,704
Available-for-sale Securities, Unrealized Loss	(126)	(186)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	1,020	2,035
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(20)	(7)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	9,722	8,669
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(106)	(179)
State and Municipal Taxable [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value	361	359
Held-to-maturity Securities, Unrealized Losses	(1)	(3)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months	361	359
Held-to-maturity Securities, Unrealized Loss More Than 12 Months	(1)	(3)
State and Municipal Tax-Exempt [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value	12,999	26,466
Held-to-maturity Securities, Unrealized Losses	(291)	(998)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months		2,045
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months		(31)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months	12,999	24,421
Held-to-maturity Securities, Unrealized Loss More Than 12 Months	(291)	(967)
Available-for-sale Securities, Fair Value	1,893	1,850
Available-for-sale Securities, Unrealized Loss	(85)	(131)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	1,893	1,850
Available-for-sale Securities, Unrealized Loss More Than 12 Months	$ (85)	$ (131)

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