Accumulated Other Comprehensive Income (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax	$ 5,055	$ 1,269	$ 8,244	$ 5,308
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	5,229	1,566	8,600	5,908
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	174	297	356	600
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	(5,564)	(3,493)	(5,564)	(3,493)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	5,229	1,566	8,600	5,908
TOTAL Balance	(10,793)	(5,059)	(14,164)	(9,401)
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	5,055	1,269	8,244	5,308
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	5,045	1,262	8,233	5,300
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	(10)	(7)	(11)	(8)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	7,156	14,353	7,156	14,353
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	5,045	1,262	8,233	5,300
TOTAL Balance	2,111	13,091	(1,077)	9,053
Unrealized gains losses on securities available-for-sale with other than temporary impairment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	2,027	1,233	2,027	1,233
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	242	(978)	86	(1,737)
TOTAL Balance	1,785	2,211	1,941	2,970
Unrealized gains losses on securities available-for-sale without other than temporary impairment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	5,129	13,120	5,129	13,120
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	4,803	2,240	8,147	7,037
TOTAL Balance	326	10,880	(3,018)	6,083
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	0	0
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	184	304	367	608
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	184	304	367	608
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	(12,720)	(17,846)	(12,720)	(17,846)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	184	304	367	608
TOTAL Balance	$ (12,904)	$ (18,150)	$ (13,087)	$ (18,454)