Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before-Tax Amount	$ (251)	$ (856)
Income Tax Effect	36	256
Net-of-Tax Amount	(215)	(600)
Unrealized net holding gains (losses) on available for sale securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before-Tax Amount	182
Income Tax Effect	(106)
Net-of-Tax Amount	76
Before-Tax Amount	184	(464)
Income Tax Effect	(107)	130
Net-of-Tax Amount	77	(334)
Unrealized net holding gains (losses) on available for sale securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before-Tax Amount	2	0
Income Tax Effect	(1)	0
Net-of-Tax Amount	1	0
Unrealized impairment (loss) on held to maturity security [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before-Tax Amount	(501)	(501)
Income Tax Effect	170	170
Net-of-Tax Amount	(331)	(331)
Unfunded Pension Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before-Tax Amount		109
Income Tax Effect		(44)
Net-of-Tax Amount		65
Plan actuarial gains (losses) included in other comprehensive income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before-Tax Amount	66	269
Income Tax Effect	(27)	(108)
Net-of-Tax Amount	$ 39	161
Plan actuarial gains (losses) included in other comprehensive income [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before-Tax Amount		(160)
Income Tax Effect		64
Net-of-Tax Amount		$ (96)