Investments (Realized Gain Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Realized pretax gains (losses) on the sale of investments
Gains	$ 5,066	$ 6,443	$ 29,253	$ 32,013
Losses	(4,493)	(1,538)	(15,494)	(6,862)
Net realized investment gain	573	4,905	13,759	25,151
Fixed Maturity Securities [Member]
Realized pretax gains (losses) on the sale of investments
Gains	4,629	5,018	18,505	6,150
Losses	(462)	(1,533)	(1,934)	(3,688)
Net realized investment gain	4,167	3,485	16,571	2,462
Equity Securities [Member]
Realized pretax gains (losses) on the sale of investments
Gains	437	1,425	10,748	25,863
Losses	(4,031)	(5)	(13,560)	(3,174)
Net realized investment gain	$ (3,594)	$ 1,420	$ (2,812)	$ 22,689