Parent Company Financial Information (Schedule of Condensed Statement of Comprehensive Income) (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Net income		$ 3,002	$ 3,020	$ 2,049	$ 2,613	$ 808	$ 2,411	$ 2,286	$ 2,441	$ 10,684	$ 7,946
Before tax amount										(350)	(117)
Tax effect										73	40
Unrealized holding losses on AFS investment securities arising during the period, Net of tax										(277)	(77)
Accretion of discount on AFS to HTM reclassification
Before tax amount	[1]										8
Tax effect	[2]										(3)
Accretion of discount on AFS to HTM reclassification											5
Less reclassification for gains on sales of AFS investment securities included in net income
Before tax amount	[3]										(9)
Tax effect	[2]										3
Less reclassification for gains on sales of AFS investment securities included in net income											(6)
Other comprehensive loss - securities										(277)	(78)
Unrealized actuarial gains (losses) - pension
Before tax amount										212	(57)
Tax effect										(45)	19
Unrealized actuarial gains (losses) - pension										167	(38)
Total other comprehensive income										(110)	(116)
Total comprehensive income										10,574	7,830
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net income										10,684	7,946
Before tax amount										(350)	(117)
Tax effect										73	40
Unrealized holding losses on AFS investment securities arising during the period, Net of tax										(277)	(77)
Accretion of discount on AFS to HTM reclassification
Before tax amount											8
Tax effect											(3)
Accretion of discount on AFS to HTM reclassification											5
Less reclassification for gains on sales of AFS investment securities included in net income
Before tax amount											(9)
Tax effect											3
Less reclassification for gains on sales of AFS investment securities included in net income											(6)
Other comprehensive loss - securities										(277)	(78)
Unrealized actuarial gains (losses) - pension
Before tax amount										212	(57)
Tax effect										(45)	19
Unrealized actuarial gains (losses) - pension										167	(38)
Total other comprehensive income										(110)	(116)
Total comprehensive income										$ 10,574	$ 7,830

[1] Amounts are included in "Interest and dividends on investment securities" in the consolidated statements of income.

[2] Amounts are included in "Income tax expense" in the consolidated statements of income.

[3] Amounts are included in "Gains on sale of investment securities, net" in the consolidated statements of income.