Accumulated Other Comprehensive Income (Details) - 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), Net of Tax, Portion Attributable to Parent	$ (6,745)	$ 4,231	$ 481	$ 9,649
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	(7,571)	4,115	(2,810)	9,418
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	826	116	3,291	231
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	(6,745)	4,231	481	9,649
TOTAL Balance	(7,303)	(8,551)	(14,529)	(13,969)
TOTAL Balance	(14,048)	(4,320)	(14,048)	(4,320)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(7,564)	4,116	(2,802)	9,419
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	(7,571)	4,115	(2,810)	9,418
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	7	1	8	1
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	(7,564)	4,116	(2,802)	9,419
TOTAL Balance	15,040	1,668	10,278	(3,635)
TOTAL Balance	7,476	5,784	7,476	5,784
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent		115	3,283	230
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	0	0	0	0
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	819	115	3,283	230
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	819	115	3,283	230
TOTAL Balance	(22,343)	(10,219)	(24,807)	(10,334)
TOTAL Balance	$ (21,524)	$ (10,104)	$ (21,524)	$ (10,104)