Stockholders Equity AOC I Reclassification Adjustments (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016		Jun. 30, 2015
Net realized capital gains on sales of investments		$ (2,269)	$ 7,968	$ (679)		$ 7,602
Net impairment loss recognized in earnings		(25)	(160)	(2,222)		(160)
Income available to common stockholders		24,343	32,335	50,251		55,888
Income taxes		$ 10,477	$ 14,153	21,546		24,537
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax				(384)		(159)
reclassifications out of accumulated other comprehensive income [Member]
Net realized capital gains on sales of investments				999		(1,145)
Change in offsets to unrealized on investments				(504)		167
Net impairment loss recognized in earnings				(1,522)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Net of Tax						(6)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax				437		740
Income available to common stockholders				(590)		(244)
Income taxes				206		85
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax				(384)		(159)
reclassifications out of accumulated other comprehensive income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Net realized capital gains on sales of investments				999		(1,145)
Change in offsets to unrealized on investments				(562)		167
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Net of Tax	[1]					0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax				0	[2]	0	[1]
Income available to common stockholders				437	[2]	(978)	[1]
Income taxes				(153)	[2]	342	[1]
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax	[2]			284		(636)	[1]
reclassifications out of accumulated other comprehensive income [Member] | Accumulated Other-than-Temporary Impairment [Member]
Net realized capital gains on sales of investments	[1]			0		0
Change in offsets to unrealized on investments				58		0
Net impairment loss recognized in earnings				(1,522)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Net of Tax	[1]					0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	[1]			0		0
Income available to common stockholders	[1]			(1,464)		0
Income taxes	[1]			512		0
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax	[1]			(952)		0
reclassifications out of accumulated other comprehensive income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Net realized capital gains on sales of investments				0		0
Change in offsets to unrealized on investments				0		0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Net of Tax						(6)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax				437		740
Income available to common stockholders				437		734
Income taxes				(153)		(257)
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Net of Tax				$ 284		$ 477

[1] See Note 2 for further information.

[2] Includes the impact of taxes, deferred acquisition costs, value of insurance in force acquired, unearned revenue reserves and policyholder liabilities. See Note 2 for further information.