Supplemental Comprehensive Income Disclosures (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning Balance			$ (20,588)	$ 1,259
Other comprehensive income (loss) before reclassification adjustment	(3,606)	(2,598)	10,961	(20,574)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(18)	0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			10,943	(23,786)
Amounts reclassified from accumulated other comprehensive income (loss)			(31)	3,058
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(1)	0
Total other comprehensive (loss) income	(3,654)	(2,747)	10,912	(20,728)
Accumulated Other Comprehensive Income (Loss), Ending Balance	(9,676)	(19,469)	(9,676)	(19,469)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning Balance			(20,868)	1,121
Other comprehensive income (loss) before reclassification adjustment			10,961	(23,786)
Amounts reclassified from accumulated other comprehensive income (loss)			(32)	3,058
Total other comprehensive (loss) income			10,929	(20,728)
Accumulated Other Comprehensive Income (Loss), Ending Balance	(9,939)	(19,607)	(9,939)	(19,607)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning Balance			280	138
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	280	138	280	138
Derivative [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning Balance			0	0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax			(18)	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax			(1)	0
Total other comprehensive (loss) income			(17)	0
Accumulated Other Comprehensive Income (Loss), Ending Balance	(17)	0	(17)	0
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive (loss) income			$ 10,912	$ (20,728)