Investment Securities (Aggregate Unrealized Losses and Aggregate Fair Value of Underlying Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Securities [Line Items]
Held-to-maturity Securities, Fair Value	$ 32,114	$ 22,535
Held-to-maturity Securities, Unrealized Losses	(1,075)	(444)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months	3,932	8,248
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months	(46)	(82)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months	28,182	14,287
Held-to-maturity Securities, Unrealized Loss More Than 12 Months	(1,029)	(362)
Available-for-sale Securities, Fair Value	86,643	109,722
Available-for-sale Securities, Unrealized Loss	(2,122)	(1,784)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	2,035	46,941
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(7)	(419)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	84,608	62,781
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(2,115)	(1,365)
US Government Agency Obligations [Member]
Securities [Line Items]
Available-for-sale Securities, Fair Value	37,723	52,893
Available-for-sale Securities, Unrealized Loss	(359)	(386)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months		30,894
Available-for-sale Securities, Unrealized Loss Less Than 12 Months		(185)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	37,723	21,999
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(359)	(201)
Government Sponsored Entities (GSE) Mortgage-Backed Securities [Member]
Securities [Line Items]
Available-for-sale Securities, Fair Value	26,558	32,488
Available-for-sale Securities, Unrealized Loss	(1,005)	(715)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months		9,055
Available-for-sale Securities, Unrealized Loss Less Than 12 Months		(133)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	26,558	23,433
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(1,005)	(582)
Collateralized Mortgage Obligations GSE [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value	1,132	1,442
Held-to-maturity Securities, Unrealized Losses	(27)	(29)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months		620
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months		(5)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months	1,132	822
Held-to-maturity Securities, Unrealized Loss More Than 12 Months	(27)	(24)
Available-for-sale Securities, Fair Value	9,808	11,654
Available-for-sale Securities, Unrealized Loss	(441)	(447)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months		2,132
Available-for-sale Securities, Unrealized Loss Less Than 12 Months		(56)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	9,808	9,522
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(441)	(391)
Corporate Bonds [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value	4,157	498
Held-to-maturity Securities, Unrealized Losses	(47)	(2)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months	1,887	498
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months	(15)	(2)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months	2,270
Held-to-maturity Securities, Unrealized Loss More Than 12 Months	(32)
Available-for-sale Securities, Fair Value	10,704	10,759
Available-for-sale Securities, Unrealized Loss	(186)	(173)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months	2,035	4,572
Available-for-sale Securities, Unrealized Loss Less Than 12 Months	(7)	(43)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	8,669	6,187
Available-for-sale Securities, Unrealized Loss More Than 12 Months	(179)	(130)
State and Municipal Taxable [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value	359	355
Held-to-maturity Securities, Unrealized Losses	(3)	(8)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months		355
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months		(8)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months	359
Held-to-maturity Securities, Unrealized Loss More Than 12 Months	(3)
State and Municipal Tax-Exempt [Member]
Securities [Line Items]
Held-to-maturity Securities, Fair Value	26,466	20,240
Held-to-maturity Securities, Unrealized Losses	(998)	(405)
Held-to-maturity Securities, Fair Value Impaired Less Than 12 Months	2,045	6,775
Held-to-maturity Securities, Unrealized Loss Less Than 12 Months	(31)	(67)
Held-to-maturity Securities, Fair Value Impaired More Than 12 Months	24,421	13,465
Held-to-maturity Securities, Unrealized Loss More Than 12 Months	(967)	(338)
Available-for-sale Securities, Fair Value	1,850	1,928
Available-for-sale Securities, Unrealized Loss	(131)	(63)
Available-for-sale Securities, Fair Value Impaired Less Than 12 Months		288
Available-for-sale Securities, Unrealized Loss Less Than 12 Months		(2)
Available-for-sale Securities, Fair Value Impaired More Than 12 Months	1,850	1,640
Available-for-sale Securities, Unrealized Loss More Than 12 Months	$ (131)	$ (61)