INVESTMENT OPERATIONS (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net realized gains (losses) for all other investments
Fixed maturities	$ 20,198,000	$ 19,292,000	$ 27,568,000	$ 31,590,000
Equity securities		2,366,000		2,367,000
Impairments on fixed maturity securities	(1,460,000)	(2,910,000)	(3,051,000)	(6,497,000)
Impairments on equity securities		(1,090,000)		(2,087,000)
Modco trading portfolio	60,989,000	(126,694,000)	127,292,000	(142,022,000)
Other investments	(721,000)	(5,191,000)	(2,248,000)	(6,408,000)
Total realized gains (losses) - investments	79,006,000	(114,227,000)	149,561,000	(123,057,000)
Gross realized gains on investments available-for-sale (fixed maturities, equity securities, and short-term investments)	20,400,000	23,900,000	28,100,000	36,800,000
Gross realized losses	1,600,000	6,100,000	3,400,000	11,000,000
Impairment losses on investments available-for-sale	1,400,000	3,800,000	2,900,000	8,200,000
Fair value (proceeds) of securities in an unrealized gain position sold	306,300,000	409,900,000	571,000,000	797,700,000
Gain realized on the sale of securities in an unrealized gain position	20,400,000	23,900,000	28,100,000	36,800,000
Fair value (proceeds) of securities sold in an unrealized loss position	1,600,000	53,200,000	4,400,000	57,200,000
Losses realized on the sale of securities in an unrealized loss position	$ 200,000	$ 2,300,000	$ 500,000	$ 2,800,000