Investment Securities (Aggregate Unrealized Losses and Aggregate Fair Value of Underlying Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Securities [Line Items]
Held-to-maturity Securities, Fair Value, Total	$ 30,330	$ 39,756
Held-to-maturity Securities, Unrealized Losses	(1,123)	(1,491)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months	28,347	37,786
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months	(1,111)	(1,467)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months	1,983	1,970
Held-to-maturity Securities, Unrealized Loss More Than 12 Months	(12)	(24)
Available-for-sale Securities, Fair Value, Total	83,903	86,544
Available-for-sale Securities, Unrealized Loss, Total	(1,513)	(1,687)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	71,668	73,858
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(1,161)	(1,313)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	12,235	12,686
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(352)	(374)
US Government Agency Obligations [Member]
Securities [Line Items]
Available-for-sale Securities, Fair Value, Total	27,275	27,270
Available-for-sale Securities, Unrealized Loss, Total	(145)	(150)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	27,275	27,270
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(145)	(150)
Government Sponsored Entities (GSE) Mortgage-Backed Securities [Member]
Securities [Line Items]
Available-for-sale Securities, Fair Value, Total	28,997	29,145
Available-for-sale Securities, Unrealized Loss, Total	(643)	(723)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	28,997	29,145
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(643)	(723)
Collateralized Mortgage Obligations GSE [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value, Total	1,019	1,104
Held-to-maturity Securities, Unrealized Losses	(20)	(22)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months	1,019	1,104
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months	(20)	(22)
Available-for-sale Securities, Fair Value, Total	11,409	12,116
Available-for-sale Securities, Unrealized Loss, Total	(373)	(387)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	4,615	4,868
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(98)	(94)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	6,794	7,248
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(275)	(293)
Corporate Bonds [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value, Total	2,472	5,962
Held-to-maturity Securities, Unrealized Losses	(23)	(63)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months	489	3,992
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months	(11)	(39)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months	1,983	1,970
Held-to-maturity Securities, Unrealized Loss More Than 12 Months	(12)	(24)
Available-for-sale Securities, Fair Value, Total	11,268	13,031
Available-for-sale Securities, Unrealized Loss, Total	(233)	(299)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	5,827	7,593
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(156)	(218)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	5,441	5,438
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(77)	(81)
State and Municipal Taxable [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value, Total	1,007
Held-to-maturity Securities, Unrealized Losses	(1)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months	1,007
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months	(1)
State and Municipal Tax-Exempt [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value, Total	25,832	32,690
Held-to-maturity Securities, Unrealized Losses	(1,079)	(1,406)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months	25,832	32,690
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months	(1,079)	(1,406)
Available-for-sale Securities, Fair Value, Total	4,954	4,956
Available-for-sale Securities, Unrealized Loss, Total	(119)	(128)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	4,954	4,956
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	$ (119)	(128)
Asset-Backed Security [Member]
Securities [Line Items]
Available-for-sale Securities, Fair Value, Total		26
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months		$ 26