Summary of Significant Accounting Policies (Components of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, before-tax amount	$ (3,759)	$ (3,621)
Accumulated other comprehensive loss, tax effect	788	1,231
Accumulated other comprehensive loss, net of tax	(2,971)	(2,390)
Net Unrealized loss on AFS Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, before-tax amount	(2,122)	(1,772)
Accumulated other comprehensive loss, tax effect	445	603
Accumulated other comprehensive loss, net of tax	(1,677)	(1,169)
Unrealized Actuarial Losses-Pension [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, before-tax amount	(1,637)	(1,849)
Accumulated other comprehensive loss, tax effect	343	628
Accumulated other comprehensive loss, net of tax	$ (1,294)	$ (1,221)