Investment Securities (Amortized Cost and Estimated Fair Values of Investment Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	$ 57,491	$ 62,026
Held-to-maturity Securities, Unrealized Gains	396	184
Held-to-maturity Securities, Unrealized Losses	(3)	(1,075)
Held-to-maturity Securities, Estimated Fair Value	57,884	61,135
Available-for-sale Securities, Amortized Cost	65,716	98,765
Available-for-sale Securities, Unrealized Gains	81
Available-for-sale Securities, Unrealized Losses	(343)	(2,122)
Available-for-sale, Estimated Fair Value	65,454	96,643
US Government Agency Obligations [Member]
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	8,955	8,749
Held-to-maturity Securities, Unrealized Gains	15	41
Held-to-maturity Securities, Estimated Fair Value	8,970	8,790
Available-for-sale Securities, Amortized Cost	24,192	48,082
Available-for-sale Securities, Unrealized Gains	8
Available-for-sale Securities, Unrealized Losses	(8)	(359)
Available-for-sale, Estimated Fair Value	24,192	47,723
Government Sponsored Entities (GSE) Mortgage-Backed Securities [Member]
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	314	389
Held-to-maturity Securities, Unrealized Gains	7
Held-to-maturity Securities, Estimated Fair Value	321	389
Available-for-sale Securities, Amortized Cost	24,813	27,563
Available-for-sale Securities, Unrealized Gains	32
Available-for-sale Securities, Unrealized Losses	(187)	(1,005)
Available-for-sale, Estimated Fair Value	24,658	26,558
Corporate Bonds [Member]
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	12,190	13,851
Held-to-maturity Securities, Unrealized Gains	207	124
Held-to-maturity Securities, Unrealized Losses		(47)
Held-to-maturity Securities, Estimated Fair Value	12,397	13,928
Available-for-sale Securities, Amortized Cost	6,029	10,890
Available-for-sale Securities, Unrealized Gains	14
Available-for-sale Securities, Unrealized Losses	(3)	(186)
Available-for-sale, Estimated Fair Value	6,040	10,704
Collateralized Mortgage Obligations GSE [Member]
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	979	1,159
Held-to-maturity Securities, Unrealized Gains	5
Held-to-maturity Securities, Unrealized Losses	(1)	(27)
Held-to-maturity Securities, Estimated Fair Value	983	1,132
Available-for-sale Securities, Amortized Cost	8,981	10,249
Available-for-sale Securities, Unrealized Gains	22
Available-for-sale Securities, Unrealized Losses	(144)	(441)
Available-for-sale, Estimated Fair Value	8,859	9,808
State and Municipal Taxable [Member]
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	362	362
Held-to-maturity Securities, Unrealized Gains	5
Held-to-maturity Securities, Unrealized Losses		(3)
Held-to-maturity Securities, Estimated Fair Value	367	359
State and Municipal Tax-Exempt [Member]
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	34,691	37,516
Held-to-maturity Securities, Unrealized Gains	157	19
Held-to-maturity Securities, Unrealized Losses	(2)	(998)
Held-to-maturity Securities, Estimated Fair Value	34,846	36,537
Available-for-sale Securities, Amortized Cost	1,701	1,981
Available-for-sale Securities, Unrealized Gains	5
Available-for-sale Securities, Unrealized Losses	(1)	(131)
Available-for-sale, Estimated Fair Value	$ 1,705	$ 1,850

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