Investment Securities (Aggregate Unrealized Losses and Aggregate Fair Value of Underlying Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Securities [Line Items]
Held-to-maturity Securities, Fair Value, Total	$ 18,620	$ 39,756
Held-to-maturity Securities, Unrealized Losses	(517)	(1,491)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months	18,620	37,786
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months	(517)	(1,467)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months		1,970
Held-to-maturity Securities, Unrealized Loss More Than 12 Months		(24)
Available-for-sale Securities, Fair Value, Total	104,272	86,544
Available-for-sale Securities, Unrealized Loss, Total	(1,424)	(1,687)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	92,849	73,858
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(1,078)	(1,313)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	11,423	12,686
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(346)	(374)
US Government Agency Obligations [Member]
Securities [Line Items]
Available-for-sale Securities, Fair Value, Total	50,079	27,270
Available-for-sale Securities, Unrealized Loss, Total	(222)	(150)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	50,079	27,270
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(222)	(150)
Government Sponsored Entities (GSE) Mortgage-Backed Securities [Member]
Securities [Line Items]
Available-for-sale Securities, Fair Value, Total	31,132	29,145
Available-for-sale Securities, Unrealized Loss, Total	(587)	(723)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	31,132	29,145
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(587)	(723)
Collateralized Mortgage Obligations GSE [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value, Total	957	1,104
Held-to-maturity Securities, Unrealized Losses	(15)	(22)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months	957	1,104
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months	(15)	(22)
Available-for-sale Securities, Fair Value, Total	12,884	12,116
Available-for-sale Securities, Unrealized Loss, Total	(386)	(387)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	5,920	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	6,964	7,248
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(288)	(293)
Corporate Bonds [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value, Total	500	5,962
Held-to-maturity Securities, Unrealized Losses	(1)	(63)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months	500	3,992
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months	(1)	(39)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months		1,970
Held-to-maturity Securities, Unrealized Loss More Than 12 Months		(24)
Available-for-sale Securities, Fair Value, Total	8,260	13,031
Available-for-sale Securities, Unrealized Loss, Total	(150)	(299)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	3,801	7,593
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(92)	(218)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	4,459	5,438
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(58)	(81)
State and Municipal Tax-Exempt [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value, Total	17,163	32,690
Held-to-maturity Securities, Unrealized Losses	(501)	(1,406)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months	17,163	32,690
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months	(501)	(1,406)
Available-for-sale Securities, Fair Value, Total	1,917	4,956
Available-for-sale Securities, Unrealized Loss, Total	(79)	(128)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	1,917	4,956
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	$ (79)	(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