Accumulated Other Comprehensive Income (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Footnote	$ (3,421)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax	(3,700)	$ (33)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(3,421)	133
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	279	166
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	(32,310)	(5,431)	$ (32,310)	$ (5,431)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(3,421)	133	(15,240)	8,733
TOTAL Balance	(28,889)	(5,564)	(14,704)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax	(3,700)	(33)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(3,702)	(51)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	(2)	(18)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	(13,327)	7,105	(13,327)	7,105
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(3,702)	(51)
TOTAL Balance	(9,625)	7,156
Unrealized gains losses on securities available-for-sale with other than temporary impairment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	1,975	2,969	1,975	2,969
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	8	942
TOTAL Balance	1,967	2,027
Unrealized gains losses on securities available-for-sale without other than temporary impairment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	(15,302)	4,136	(15,302)	4,136
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(3,710)	(993)
TOTAL Balance	(11,592)	5,129
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax	0	0
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	281	184
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	281	184
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	(18,983)	(12,536)	$ (18,983)	$ (12,536)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	281	184
TOTAL Balance	$ (19,264)	$ (12,720)