Supplemental Comprehensive Income Disclosures (Details 2) - 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]
Accumulated Other Comprehensive Income (Loss), Beginning Balance			$ (4,499)	$ (20,588)
Other comprehensive income (loss) before reclassification adjustment	$ 4,123	$ (3,606)	8,133	10,961
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	978	(18)	1,412	(18)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			9,545	10,943
Amounts reclassified from accumulated other comprehensive income (loss)			(85)	(31)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	0	(1)	4	(1)
Total other comprehensive (loss) income	5,101	(3,654)	9,460	10,912
Accumulated Other Comprehensive Income (Loss), Ending Balance	4,961	(9,676)	4,961	(9,676)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning Balance			(4,875)	(20,868)
Other comprehensive income (loss) before reclassification adjustment			8,133	10,961
Amounts reclassified from accumulated other comprehensive income (loss)			(81)	(32)
Total other comprehensive (loss) income			8,052	10,929
Accumulated Other Comprehensive Income (Loss), Ending Balance	3,177	(9,939)	3,177	(9,939)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning Balance			76	280
Other comprehensive income (loss) before reclassification adjustment			0	0
Amounts reclassified from accumulated other comprehensive income (loss)			0	0
Total other comprehensive (loss) income			0	0
Accumulated Other Comprehensive Income (Loss), Ending Balance	76	280	76	280
Derivative [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning Balance			300	0
Total other comprehensive (loss) income			1,408	(17)
Accumulated Other Comprehensive Income (Loss), Ending Balance	$ 1,708	$ (17)	1,708	(17)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive (loss) income			$ 9,460	$ 10,912