Accumulated Other Comprehensive Income (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax	$ (7,571)	$ 4,115	$ (2,810)	$ 9,418
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(6,745)	4,231	481	9,649
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	826	116	3,291	231
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	(14,048)	(4,320)	(14,048)	(4,320)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(6,745)	4,231	481	9,649
TOTAL Balance	(7,303)	(8,551)	(14,529)	(13,969)
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	(7,571)	4,115	(2,810)	9,418
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(7,564)	4,116	(2,802)	9,419
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	7	1	8	1
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	7,476	5,784	7,476	5,784
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(7,564)	4,116	(2,802)	9,419
TOTAL Balance	15,040	1,668	10,278	(3,635)
Unrealized gains losses on securities available-for-sale with other than temporary impairment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	3,047	2,488	3,047	2,488
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(545)	1,331	(67)	3,624
TOTAL Balance	3,592	1,157	3,114	(1,136)
Unrealized gains losses on securities available-for-sale without other than temporary impairment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	4,429	3,296	4,429	3,296
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(7,019)	2,785	(2,735)	5,795
TOTAL Balance	11,448	511	7,164	(2,499)
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	819	115	3,283	230
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	819	115	3,283	230
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
TOTAL Balance	(21,524)	(10,104)	(21,524)	(10,104)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent		115	3,283	230
TOTAL Balance	$ (22,343)	$ (10,219)	$ (24,807)	$ (10,334)