Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Comprehensive income
Net income	$ 32,266	$ 23,637	$ 72,040	$ 37,593
Other comprehensive income, net of taxes:
Change in net unrealized gains and losses on fixed maturities and equity securities	61,557	105,198	127,979	148,738
Change in net funded status of pension and other postretirement benefit obligations
Other comprehensive income	61,557	105,198	127,979	148,738
Total	$ 93,823	$ 128,835	$ 200,019	$ 186,331