FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Assets:
Beginning Balance	$ 973,157,000	$ 866,911,000
Total Realized and Unrealized Gains Included in Earnings	109,343,000	4,905,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income	54,242,000	30,688,000
Total Realized and Unrealized Losses Included in Earnings	(22,290,000)	27,242,000
Total Realized and Unrealized Losses Included in Other Comprehensive Income	(79,396,000)	(26,436,000)
Purchases	934,930,000	84,519,000
Sales	(180,247,000)	(58,098,000)
Transfers in and/or out of Level 3	734,351,000	40,943,000
Other	(33,598,000)	2,483,000
Ending Balance	2,490,492,000	973,157,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	87,907,000	31,342,000
Liabilities:
Beginning Balance	740,905,000	574,075,000
Total Realized and Unrealized Gains Included in Earnings	295,910,000	86,523,000
Total Realized and Unrealized Losses Included in Earnings	(60,745,000)	(248,054,000)
Issuances	406,000	860,000
Settlements	30,903,000	20,147,000
Other	134,505,000
Ending Balance	340,738,000	740,905,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	242,411,000	(173,824,000)
Transfers
Securities transferred into Level 3	771,600,000	67,700,000
Securities transferred out of Level 3	37,200,000	26,800,000
Securities transferred from Level 2 to Level 1	0	0
Securities transferred out of Level 1	0
Annuity account balances
Liabilities:
Beginning Balance	129,468,000	136,462,000
Total Realized and Unrealized Losses Included in Earnings	(8,029,000)	12,293,000
Issuances	406,000	860,000
Settlements	30,903,000	20,147,000
Ending Balance	107,000,000	129,468,000
Other liabilities
Liabilities:
Beginning Balance	611,437,000	437,613,000
Total Realized and Unrealized Gains Included in Earnings	295,910,000	86,523,000
Total Realized and Unrealized Losses Included in Earnings	(52,716,000)	(260,347,000)
Other	134,505,000
Ending Balance	233,738,000	611,437,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	242,411,000	(173,824,000)
Total investments
Assets:
Beginning Balance	973,157,000	866,911,000
Total Realized and Unrealized Gains Included in Earnings	109,343,000	4,905,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income	54,242,000	30,688,000
Total Realized and Unrealized Losses Included in Earnings	(22,290,000)	27,242,000
Total Realized and Unrealized Losses Included in Other Comprehensive Income	(79,396,000)	(26,436,000)
Purchases	934,930,000	84,519,000
Sales	(180,247,000)	(58,098,000)
Transfers in and/or out of Level 3	734,351,000	40,943,000
Other	(33,598,000)	2,483,000
Ending Balance	2,490,492,000	973,157,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	87,907,000	31,342,000
Total fixed maturity securities
Assets:
Beginning Balance	858,975,000	777,728,000
Total Realized and Unrealized Gains Included in Earnings	8,902,000	4,897,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income	54,242,000	29,861,000
Total Realized and Unrealized Losses Included in Earnings	(6,173,000)	(2,310,000)
Total Realized and Unrealized Losses Included in Other Comprehensive Income	(79,396,000)	(25,339,000)
Purchases	932,478,000	84,515,000
Sales	(180,247,000)	(53,803,000)
Transfers in and/or out of Level 3	734,351,000	40,943,000
Other	495,000	2,483,000
Ending Balance	2,323,627,000	858,975,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	3,583,000	1,790,000
Total fixed maturity securities | Available-for-sale securities
Assets:
Beginning Balance	788,325,000	749,385,000
Total Realized and Unrealized Gains Included in Earnings	116,000	809,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income	54,242,000	29,861,000
Total Realized and Unrealized Losses Included in Earnings		(4,000)
Total Realized and Unrealized Losses Included in Other Comprehensive Income	(79,396,000)	(25,339,000)
Purchases	775,292,000	36,259,000
Sales	(150,814,000)	(43,907,000)
Transfers in and/or out of Level 3	712,700,000	40,831,000
Other	(1,014,000)	430,000
Ending Balance	2,099,451,000	788,325,000
Total fixed maturity securities | Trading Securities
Assets:
Beginning Balance	70,650,000	28,343,000
Total Realized and Unrealized Gains Included in Earnings	8,786,000	4,088,000
Total Realized and Unrealized Losses Included in Earnings	(6,173,000)	(2,306,000)
Purchases	157,186,000	48,256,000
Sales	(29,433,000)	(9,896,000)
Transfers in and/or out of Level 3	21,651,000	112,000
Other	1,509,000	2,053,000
Ending Balance	224,176,000	70,650,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	3,583,000	1,790,000
Residential mortgage-backed securities | Available-for-sale securities
Assets:
Beginning Balance	4,000	7,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income	1,310,000
Total Realized and Unrealized Losses Included in Other Comprehensive Income	(338,000)
Purchases	14,349,000
Sales	(23,000)	(3,000)
Transfers in and/or out of Level 3	(15,287,000)
Other	13,000
Ending Balance	28,000	4,000
Residential mortgage-backed securities | Trading Securities
Assets:
Total Realized and Unrealized Losses Included in Earnings	(1,000)
Purchases	1,582,000
Sales	(72,000)
Transfers in and/or out of Level 3	(1,494,000)
Other	(15,000)
Other asset-backed securities | Available-for-sale securities
Assets:
Beginning Balance	596,143,000	614,813,000
Total Realized and Unrealized Gains Included in Earnings		339,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income	44,620,000	21,780,000
Total Realized and Unrealized Losses Included in Other Comprehensive Income	(58,937,000)	(22,587,000)
Purchases	24,931,000
Sales	(62,760,000)	(19,050,000)
Transfers in and/or out of Level 3	1,227,000	771,000
Other	584,000	77,000
Ending Balance	545,808,000	596,143,000
Other asset-backed securities | Trading Securities
Assets:
Beginning Balance	70,535,000	28,343,000
Total Realized and Unrealized Gains Included in Earnings	8,785,000	4,086,000
Total Realized and Unrealized Losses Included in Earnings	(5,947,000)	(2,306,000)
Purchases	147,224,000	48,255,000
Sales	(29,344,000)	(9,896,000)
Transfers in and/or out of Level 3	2,210,000
Other	1,514,000	2,053,000
Ending Balance	194,977,000	70,535,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	3,588,000	1,780,000
U.S. government-related securities | Available-for-sale securities
Assets:
Beginning Balance		15,000,000
Total Realized and Unrealized Losses Included in Other Comprehensive Income		(2,000)
Sales		(15,000,000)
Other		2,000
States, municipals, and political subdivisions | Available-for-sale securities
Assets:
Beginning Balance	4,275,000
Purchases		4,275,000
Sales	(600,000)
Ending Balance	3,675,000	4,275,000
States, municipals, and political subdivisions | Trading Securities
Assets:
Total Realized and Unrealized Losses Included in Earnings	(123,000)
Purchases	3,500,000
Transfers in and/or out of Level 3	(3,377,000)
Other government-related securities | Available-for-sale securities
Assets:
Beginning Balance	20,011,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income	2,000	29,000
Total Realized and Unrealized Losses Included in Other Comprehensive Income	(3,000)	(27,000)
Purchases		20,024,000
Sales	(20,000,000)
Other	(10,000)	(15,000)
Ending Balance		20,011,000
Corporate bonds | Available-for-sale securities
Assets:
Beginning Balance	167,892,000	119,565,000
Total Realized and Unrealized Gains Included in Earnings	116,000	470,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income	8,310,000	8,052,000
Total Realized and Unrealized Losses Included in Earnings		(4,000)
Total Realized and Unrealized Losses Included in Other Comprehensive Income	(20,118,000)	(2,723,000)
Purchases	736,012,000	11,960,000
Sales	(67,431,000)	(9,854,000)
Transfers in and/or out of Level 3	726,760,000	40,060,000
Other	(1,601,000)	366,000
Ending Balance	1,549,940,000	167,892,000
Corporate bonds | Trading Securities
Assets:
Beginning Balance	115,000
Total Realized and Unrealized Gains Included in Earnings	1,000	2,000
Total Realized and Unrealized Losses Included in Earnings	(102,000)
Purchases	4,880,000	1,000
Sales	(17,000)
Transfers in and/or out of Level 3	24,312,000	112,000
Other	10,000
Ending Balance	29,199,000	115,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	(5,000)	10,000
Equity securities
Assets:
Beginning Balance	65,527,000	70,080,000
Total Realized and Unrealized Gains Included in Earnings		8,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income		827,000
Total Realized and Unrealized Losses Included in Other Comprehensive Income		(1,097,000)
Purchases	2,452,000	4,000
Sales		(4,295,000)
Ending Balance	67,979,000	65,527,000
Other long-term investments
Assets:
Beginning Balance	48,655,000	19,103,000
Total Realized and Unrealized Gains Included in Earnings	100,441,000
Total Realized and Unrealized Losses Included in Earnings	(16,117,000)	29,552,000
Other	(34,093,000)
Ending Balance	98,886,000	48,655,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	$ 84,324,000	$ 29,552,000