Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ 5,290	$ 1,995	$ 5,771	$ 11,644
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	4,464	1,879	1,654	11,297
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	826	116	4,117	347
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	5,290	1,995	5,771	11,644
TOTAL Balance	(14,048)	(4,320)	(14,529)	(13,969)
TOTAL Balance	(8,758)	(2,325)	(8,758)	(2,325)
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	4,471	1,879	1,669	11,298
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	4,464	1,879	1,654	11,297
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	7	0	15	1
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	4,471	1,879	1,669	11,298
TOTAL Balance	7,476	5,784	10,278	(3,635)
TOTAL Balance	11,947	7,663	11,947	7,663
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	819	116	4,102	346
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	116	4,102	346
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	819	116	4,102	346
TOTAL Balance	(21,524)	(10,104)	(24,807)	(10,334)
TOTAL Balance	$ (20,705)	$ (9,988)	$ (20,705)	$ (9,988)