FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 4) (USD $)	3 Months Ended																	3 Months Ended								3 Months Ended								3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Annuity account balances	Mar. 31, 2013 Annuity account balances	Mar. 31, 2014 Other liabilities	Mar. 31, 2013 Other liabilities	Mar. 31, 2014 Total investments	Mar. 31, 2013 Total investments	Mar. 31, 2014 Total fixed maturity securities	Mar. 31, 2013 Total fixed maturity securities	Mar. 31, 2014 Total fixed maturity securities Available-for-sale securities	Mar. 31, 2013 Total fixed maturity securities Available-for-sale securities	Mar. 31, 2014 Total fixed maturity securities Trading Securities	Mar. 31, 2013 Total fixed maturity securities Trading Securities	Mar. 31, 2014 Residential mortgage-backed securities Available-for-sale securities	Mar. 31, 2013 Residential mortgage-backed securities Available-for-sale securities	Dec. 31, 2012 Residential mortgage-backed securities Available-for-sale securities	Mar. 31, 2014 Other asset-backed securities Available-for-sale securities	Mar. 31, 2013 Other asset-backed securities Available-for-sale securities	Mar. 31, 2014 Other asset-backed securities Trading Securities	Mar. 31, 2013 Other asset-backed securities Trading Securities	Mar. 31, 2014 States, municipals, and political subdivisions Available-for-sale securities	Dec. 31, 2013 States, municipals, and political subdivisions Available-for-sale securities	Mar. 31, 2013 States, municipals, and political subdivisions Available-for-sale securities	Dec. 31, 2012 States, municipals, and political subdivisions Available-for-sale securities	Mar. 31, 2013 Other government-related securities Available-for-sale securities	Mar. 31, 2014 Corporate bonds Available-for-sale securities	Mar. 31, 2013 Corporate bonds Available-for-sale securities	Mar. 31, 2014 Corporate bonds Trading Securities	Mar. 31, 2013 Corporate bonds Trading Securities	Mar. 31, 2014 Equity securities	Mar. 31, 2013 Equity securities	Dec. 31, 2012 Equity securities	Mar. 31, 2014 Other long-term investments	Mar. 31, 2013 Other long-term investments
Assets:
Beginning Balance	$ 2,490,492,000	$ 973,157,000					$ 2,490,492,000	$ 973,157,000	$ 2,323,627,000	$ 858,975,000	$ 2,099,451,000	$ 788,325,000	$ 224,176,000	$ 70,650,000	$ 28,000	$ 4,000	$ 4,000	$ 545,808,000	$ 596,143,000	$ 194,977,000	$ 70,535,000	$ 3,675,000	$ 3,675,000	$ 4,275,000	$ 4,275,000	$ 20,011,000	$ 1,549,940,000	$ 167,892,000	$ 29,199,000	$ 115,000	$ 67,979,000	$ 65,527,000	$ 65,527,000	$ 98,886,000	$ 48,655,000
Total Realized and Unrealized Gains Included in Earnings	2,271,000	29,027,000					2,271,000	29,027,000	2,160,000	3,409,000	895,000		1,265,000	3,409,000						727,000	3,408,000						895,000		538,000	1,000				111,000	25,618,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income	31,381,000	942,000					31,381,000	942,000	31,154,000	942,000	31,154,000	942,000						4,137,000	12,000								27,017,000	930,000			227,000
Total Realized and Unrealized Losses Included in Earnings	(23,725,000)	(4,128,000)					(23,725,000)	(4,128,000)	(441,000)	(259,000)			(441,000)	(259,000)						(428,000)	(259,000)								(13,000)					(23,284,000)	(3,869,000)
Total Realized and Unrealized Losses Included in Other Comprehensive Income	(6,310,000)	(29,915,000)					(6,310,000)	(29,915,000)	(6,144,000)	(29,915,000)	(6,144,000)	(29,915,000)						(1,129,000)	(27,548,000)							(3,000)	(5,015,000)	(2,364,000)			(166,000)
Purchases	38,939,000						38,939,000		29,388,000		29,388,000				1,000												29,387,000				9,551,000
Sales	(39,013,000)	(53,920,000)					(39,013,000)	(53,920,000)	(39,013,000)	(53,920,000)	(38,138,000)	(51,080,000)	(875,000)	(2,840,000)	(11,000)			(260,000)	(9,009,000)	(812,000)	(2,823,000)						(37,867,000)	(42,071,000)	(63,000)	(17,000)
Transfers in and/or out of Level 3	13,457,000	6,240,000					13,457,000	6,240,000	13,457,000	6,240,000	12,185,000	1,227,000	1,272,000	5,013,000					1,227,000								12,185,000		1,272,000	5,013,000
Other	(2,371,000)	528,000					(2,371,000)	528,000	(2,371,000)	528,000	(2,584,000)	6,000	213,000	522,000	(1,000)			249,000	(157,000)	200,000	522,000					(5,000)	(2,832,000)	168,000	13,000
Ending Balance	2,505,121,000	921,931,000					2,505,121,000	921,931,000	2,351,817,000	786,000,000	2,126,207,000	709,505,000	225,610,000	76,495,000	17,000	4,000	4,000	545,805,000	560,668,000	194,664,000	71,383,000	3,675,000	3,675,000	4,275,000	4,275,000	20,003,000	1,573,710,000	124,555,000	30,946,000	5,112,000	77,591,000	65,527,000	65,527,000	75,713,000	70,404,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	(22,709,000)	25,033,000					(22,709,000)	25,033,000	464,000	3,284,000			464,000	3,284,000						468,000	3,255,000								(4,000)	29,000				(23,173,000)	21,749,000
Liabilities:
Beginning Balance	340,738,000	740,905,000	107,000,000	129,468,000	233,738,000	611,437,000
Total Realized and Unrealized Gains Included in Earnings	12,000	84,546,000			12,000	84,546,000
Total Realized and Unrealized Losses Included in Earnings	(76,232,000)	(14,923,000)	(1,409,000)	(2,000,000)	(74,823,000)	(12,923,000)
Issuances	112,000	136,000	112,000	136,000
Settlements	(2,928,000)	7,923,000	(2,928,000)	7,923,000
Ending Balance	414,142,000	663,495,000	105,593,000	123,681,000	308,549,000	539,814,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	(74,811,000)	71,623,000			(74,811,000)	71,623,000
Transfers
Securities transferred into Level 3 from Level 2	29,700,000	6,200,000
Securities transferred out of Level 3		0
Securities transferred into Level 2 from Level 3	16,200,000
Securities transferred from Level 2 to Level 1	0	0
Securities transferred out of Level 1	$ 0	$ 0