Investment Securities (Amortized Cost and Estimated Fair Values of Investment Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	$ 62,026	$ 62,390
Held-to-maturity Securities, Unrealized Gains	184	474
Held-to-maturity Securities, Unrealized Losses	(1,075)	(444)
Held-to-maturity Securities, Estimated Fair Value	61,135	62,420
Available-for-sale Securities, Amortized Cost	98,765	113,555
Available-for-sale Securities, Unrealized Gains		12
Available-for-sale Securities, Unrealized Losses	(2,122)	(1,784)
Available-for-sale, Estimated Fair Value	96,643	111,783
US Government Agency Obligations [Member]
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	8,749	8,483
Held-to-maturity Securities, Unrealized Gains	41	163
Held-to-maturity Securities, Unrealized Losses
Held-to-maturity Securities, Estimated Fair Value	8,790	8,646
Available-for-sale Securities, Amortized Cost	48,082	53,279
Available-for-sale Securities, Unrealized Gains
Available-for-sale Securities, Unrealized Losses	(359)	(386)
Available-for-sale, Estimated Fair Value	47,723	52,893
Government Sponsored Entities (GSE) Mortgage-Backed Securities [Member]
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	389	496
Held-to-maturity Securities, Unrealized Gains		9
Held-to-maturity Securities, Unrealized Losses
Held-to-maturity Securities, Estimated Fair Value	389	505
Available-for-sale Securities, Amortized Cost	27,563	33,203
Available-for-sale Securities, Unrealized Gains
Available-for-sale Securities, Unrealized Losses	(1,005)	(715)
Available-for-sale, Estimated Fair Value	26,558	32,488
Corporate Bonds [Member]
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	13,851	14,047
Held-to-maturity Securities, Unrealized Gains	124	243
Held-to-maturity Securities, Unrealized Losses	(47)	(2)
Held-to-maturity Securities, Estimated Fair Value	13,928	14,288
Available-for-sale Securities, Amortized Cost	10,890	12,981
Available-for-sale Securities, Unrealized Gains		12
Available-for-sale Securities, Unrealized Losses	(186)	(173)
Available-for-sale, Estimated Fair Value	10,704	12,820
Collateralized Mortgage Obligations GSE [Member]
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	1,159	1,471
Held-to-maturity Securities, Unrealized Gains
Held-to-maturity Securities, Unrealized Losses	(27)	(29)
Held-to-maturity Securities, Estimated Fair Value	1,132	1,442
Available-for-sale Securities, Amortized Cost	10,249	12,101
Available-for-sale Securities, Unrealized Gains
Available-for-sale Securities, Unrealized Losses	(441)	(447)
Available-for-sale, Estimated Fair Value	9,808	11,654
State and Municipal Taxable [Member]
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	362	363
Held-to-maturity Securities, Unrealized Gains
Held-to-maturity Securities, Unrealized Losses	(3)	(8)
Held-to-maturity Securities, Estimated Fair Value	359	355
State and Municipal Tax-Exempt [Member]
Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	37,516	37,530
Held-to-maturity Securities, Unrealized Gains	19	59
Held-to-maturity Securities, Unrealized Losses	(998)	(405)
Held-to-maturity Securities, Estimated Fair Value	36,537	37,184
Available-for-sale Securities, Amortized Cost	1,981	1,991
Available-for-sale Securities, Unrealized Gains
Available-for-sale Securities, Unrealized Losses	(131)	(63)
Available-for-sale, Estimated Fair Value	$ 1,850	$ 1,928

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