Investment Securities (Unrealized Gain (Loss) on Investments) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Available-for-sale debt securities, Amortized Cost	$ 103,341	$ 116,027
Available-for-sale debt securities, Unrealized Gains	63	21
Available-for-sale debt securities, Unrealized Losses	1,872	4,125
Available for sale debt securities, Fair Value	101,532	111,923
Held-to-maturity debt securities, Amortized Cost	162,791	168,370
Held-to-maturity debt securities, Unrealized Gains	1,769	517
Held-to-maturity debt securities, Unrealized Losses	837	2,305
Held-to-maturity debt securities, Fair Value	163,723	166,582
Available-for-sale securities and Held-to-maturity debt securities, Amortized Cost	266,132	284,397
Available-for-sale securities and Held-to-maturity debt securities, Unrealized Gains	1,832	538
Available-for-sale securities and Held-to-maturity debt securities, Unrealized Losses	2,709	6,430
Available-for-sale securities and Held-to-maturity debt securities, Fair Value	265,255	278,505
Available-for-sale securities and Held-to-maturity debt securities, Fair Value	265,255	278,505
U.S. Treasury and U.S. government agencies [Member]
Schedule of Investments [Line Items]
Available-for-sale debt securities, Amortized Cost	40,086	43,270
Available-for-sale debt securities, Unrealized Gains		10
Available-for-sale debt securities, Unrealized Losses	906	1,708
Available for sale debt securities, Fair Value	39,180	41,572
Held-to-maturity debt securities, Amortized Cost	14,495	16,985
Held-to-maturity debt securities, Unrealized Gains	18	14
Held-to-maturity debt securities, Unrealized Losses	83	143
Held-to-maturity debt securities, Fair Value	14,430	16,856
Mortgage-backed U.S. Government Agencies [Member]
Schedule of Investments [Line Items]
Available-for-sale debt securities, Amortized Cost	34,323	39,865
Available-for-sale debt securities, Unrealized Gains	22
Available-for-sale debt securities, Unrealized Losses	500	1,016
Available for sale debt securities, Fair Value	33,845	38,849
Held-to-maturity debt securities, Amortized Cost	62,872	65,812
Held-to-maturity debt securities, Unrealized Gains	206	46
Held-to-maturity debt securities, Unrealized Losses	663	1,310
Held-to-maturity debt securities, Fair Value	62,415	64,548
State and political subdivision obligations [Member]
Schedule of Investments [Line Items]
Available-for-sale debt securities, Amortized Cost	25,198	30,642
Available-for-sale debt securities, Unrealized Gains	12	11
Available-for-sale debt securities, Unrealized Losses	454	1,397
Available for sale debt securities, Fair Value	24,756	29,256
Held-to-maturity debt securities, Amortized Cost	83,889	84,034
Held-to-maturity debt securities, Unrealized Gains	1,545	457
Held-to-maturity debt securities, Unrealized Losses	73	842
Held-to-maturity debt securities, Fair Value	85,361	83,649
Corporate debt securities [Member]
Schedule of Investments [Line Items]
Available-for-sale debt securities, Amortized Cost	3,734	2,250
Available-for-sale debt securities, Unrealized Gains	29
Available-for-sale debt securities, Unrealized Losses	12	4
Available for sale debt securities, Fair Value	3,751	2,246
Held-to-maturity debt securities, Amortized Cost	1,535	1,539
Held-to-maturity debt securities, Unrealized Losses	18	10
Held-to-maturity debt securities, Fair Value	$ 1,517	$ 1,529

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Available-for-sale securities and held-to-maturity gross unrealized gain.

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Available-for-sale securities and held-to-maturity gross unrealized losses.

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of debt and equity financial instruments classified as either held-to-maturity or available-for-sale.

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