INVESTMENT OPERATIONS (Details 3) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
INVESTMENT OPERATIONS
Other-than-temporary impairments of investments recorded	$ 1,789,000	$ 13,582,000	$ 3,129,000	$ 47,681,000
Other-than-temporary impairments of investments recorded in earnings	4,000,000	13,442,000	8,584,000	32,038,000
Non-credit gains recorded in other comprehensive income (loss)	(2,211,000)	140,000	(5,455,000)	15,643,000
Debt securities
INVESTMENT OPERATIONS
Other-than-temporary impairments of investments recorded	700,000	13,600,000	1,000,000	47,700,000
Other-than-temporary impairments related to debt or equity securities that the entity intended to sell or expected to be required to sell	0	0	0	0
Credit losses on debt securities
Beginning balance	62,914,000	87,942,000	121,237,000	69,476,000
Additions for newly impaired securities	618,000	3,619,000	1,615,000	19,307,000
Additions for previously impaired securities	1,568,000	9,333,000	3,054,000	12,111,000
Reductions for previously impaired securities due to a change in expected cash flows	(6,049,000)		(66,855,000)
Reductions for previously impaired securities that were sold in the current period	(7,237,000)		(7,237,000)
Ending balance	51,814,000	100,894,000	51,814,000	100,894,000
Equity securities
INVESTMENT OPERATIONS
Other-than-temporary impairments of investments recorded	1,100,000	0	2,100,000	0
Other-than-temporary impairments related to debt or equity securities that the entity intended to sell or expected to be required to sell	$ 0		$ 0