FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 4) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended						3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended			3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Total investments	Sep. 30, 2011 Total investments	Sep. 30, 2012 Total investments	Sep. 30, 2011 Total investments	Sep. 30, 2012 Fixed maturities	Sep. 30, 2011 Fixed maturities	Sep. 30, 2012 Fixed maturities	Sep. 30, 2011 Fixed maturities	Sep. 30, 2012 Fixed maturities Available-for-sale securities	Sep. 30, 2011 Fixed maturities Available-for-sale securities	Sep. 30, 2012 Fixed maturities Available-for-sale securities	Sep. 30, 2011 Fixed maturities Available-for-sale securities	Sep. 30, 2012 Fixed maturities Trading Securities	Sep. 30, 2011 Fixed maturities Trading Securities	Sep. 30, 2012 Fixed maturities Trading Securities	Sep. 30, 2011 Fixed maturities Trading Securities	Sep. 30, 2012 Residential mortgage-backed securities Available-for-sale securities	Sep. 30, 2011 Residential mortgage-backed securities Available-for-sale securities	Jun. 30, 2012 Residential mortgage-backed securities Available-for-sale securities	Jun. 30, 2011 Residential mortgage-backed securities Available-for-sale securities	Sep. 30, 2011 Commercial mortgage-backed securities Available-for-sale securities	Sep. 30, 2011 Commercial mortgage-backed securities Available-for-sale securities	Sep. 30, 2012 Other asset-backed securities Available-for-sale securities	Sep. 30, 2011 Other asset-backed securities Available-for-sale securities	Sep. 30, 2012 Other asset-backed securities Available-for-sale securities	Sep. 30, 2011 Other asset-backed securities Available-for-sale securities	Sep. 30, 2012 Other asset-backed securities Trading Securities	Sep. 30, 2011 Other asset-backed securities Trading Securities	Sep. 30, 2012 Other asset-backed securities Trading Securities	Sep. 30, 2011 Other asset-backed securities Trading Securities	Sep. 30, 2011 U.S. government-related securities Available-for-sale securities	Sep. 30, 2012 U.S. government-related securities Available-for-sale securities	Sep. 30, 2011 U.S. government-related securities Available-for-sale securities	Sep. 30, 2011 U.S. government-related securities Trading Securities	Sep. 30, 2011 U.S. government-related securities Trading Securities	Sep. 30, 2012 States, municipals, and political subdivisions Available-for-sale securities	Jun. 30, 2012 States, municipals, and political subdivisions Available-for-sale securities	Sep. 30, 2012 Other government-related securities Available-for-sale securities	Sep. 30, 2012 Other government-related securities Available-for-sale securities	Sep. 30, 2012 Corporate bonds Available-for-sale securities	Sep. 30, 2011 Corporate bonds Available-for-sale securities	Sep. 30, 2012 Corporate bonds Available-for-sale securities	Sep. 30, 2011 Corporate bonds Available-for-sale securities	Sep. 30, 2012 Corporate bonds Trading Securities	Sep. 30, 2011 Corporate bonds Trading Securities	Sep. 30, 2012 Corporate bonds Trading Securities	Sep. 30, 2011 Corporate bonds Trading Securities	Sep. 30, 2012 Equity securities	Sep. 30, 2011 Equity securities	Sep. 30, 2012 Equity securities	Sep. 30, 2011 Equity securities	Sep. 30, 2012 Other long-term investments	Sep. 30, 2011 Other long-term investments	Sep. 30, 2012 Other long-term investments	Sep. 30, 2011 Other long-term investments	Sep. 30, 2012 Annuity account balances	Sep. 30, 2011 Annuity account balances	Sep. 30, 2012 Annuity account balances	Sep. 30, 2011 Annuity account balances	Sep. 30, 2012 Other liabilities	Sep. 30, 2011 Other liabilities	Sep. 30, 2012 Other liabilities	Sep. 30, 2011 Other liabilities
Assets:
Beginning Balance	$ 941,368,000	$ 961,445,000	$ 866,911,000	$ 902,879,000	$ 941,368,000	$ 961,445,000	$ 866,911,000	$ 902,879,000	$ 846,258,000	$ 857,388,000	$ 777,728,000	$ 804,522,000	$ 781,085,000	$ 770,742,000	$ 749,385,000	$ 741,155,000	$ 65,173,000	$ 86,646,000	$ 28,343,000	$ 63,367,000	$ 7,000	$ 20,000	$ 4,000	$ 7,000		$ 19,901,000	$ 584,641,000	$ 637,746,000	$ 614,813,000	$ 641,129,000	$ 65,059,000	$ 41,093,000	$ 28,343,000	$ 59,925,000	$ 15,000,000	$ 15,000,000	$ 15,109,000	$ 3,512,000	$ 3,442,000		$ 4,275,000	$ 20,020,000		$ 172,145,000	$ 117,989,000	$ 119,565,000	$ 64,996,000	$ 114,000	$ 42,041,000			$ 69,795,000	$ 70,276,000	$ 70,080,000	$ 66,592,000	$ 25,315,000	$ 33,781,000	$ 19,103,000	$ 31,765,000
Total Realized and Unrealized Gains Included in Earnings	23,304,000	263,000	37,749,000	6,575,000	23,304,000	263,000	37,749,000	6,575,000	3,018,000	28,000	3,790,000	3,096,000	45,000		339,000	1,786,000	2,973,000	28,000	3,451,000	1,310,000							45,000		339,000	1,786,000	2,972,000	28,000	3,450,000	1,180,000					130,000									1,000		1,000		8,000		8,000	49,000	20,278,000	235,000	33,951,000	3,430,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income	16,811,000	4,866,000	23,858,000	9,114,000	16,811,000	4,866,000	23,858,000	9,114,000	16,811,000	4,866,000	23,197,000	8,669,000	16,811,000	4,866,000	23,197,000	8,669,000						12,000				147,000	11,462,000	1,478,000	15,981,000	3,637,000													18,000	5,349,000	3,388,000	7,198,000	4,873,000							661,000	445,000
Total Realized and Unrealized Losses Included in Earnings	(182,000)	(21,032,000)	(8,400,000)	(25,717,000)	(182,000)	(21,032,000)	(8,400,000)	(25,717,000)	(148,000)	(1,803,000)	(905,000)	(5,309,000)				(2,137,000)	(148,000)	(1,803,000)	(905,000)	(3,172,000)		(4,000)								(2,133,000)	(148,000)	(918,000)	(905,000)	(2,230,000)				(60,000)	(117,000)										(825,000)		(825,000)					(34,000)	(19,229,000)	(7,495,000)	(20,408,000)
Total Realized and Unrealized Losses Included in Other Comprehensive Income	(1,536,000)	(40,703,000)	(25,311,000)	(47,664,000)	(1,536,000)	(40,703,000)	(25,311,000)	(47,664,000)	(1,389,000)	(40,398,000)	(24,214,000)	(46,615,000)	(1,389,000)	(40,398,000)	(24,214,000)	(46,615,000)											(1,157,000)	(40,295,000)	(22,055,000)	(45,441,000)					(3,000)	(1,000)	(119,000)					(11,000)	(27,000)	(221,000)	(100,000)	(2,131,000)	(1,055,000)					(147,000)	(305,000)	(1,097,000)	(1,049,000)
Purchases	7,208,000		72,562,000	166,353,000	7,208,000		72,562,000	166,353,000	7,208,000		72,558,000	162,391,000			24,302,000	158,598,000	7,208,000		48,256,000	3,793,000										118,598,000	7,208,000		48,255,000	3,793,000						4,275,000			20,023,000			4,000	40,000,000			1,000				4,000	3,962,000
Sales	(13,027,000)	(15,336,000)	(49,049,000)	(160,173,000)	(13,027,000)	(15,336,000)	(49,049,000)	(160,173,000)	(8,732,000)	(15,336,000)	(44,754,000)	(160,124,000)	(7,290,000)	(675,000)	(38,238,000)	(121,510,000)	(1,442,000)	(14,661,000)	(6,516,000)	(38,614,000)	(3,000)	(12,000)				(103,000)	(5,200,000)		(19,050,000)	(118,598,000)	(1,442,000)	(14,590,000)	(6,516,000)	(38,543,000)		(15,000,000)								(2,090,000)	(675,000)	(4,185,000)	(2,797,000)		(71,000)		(71,000)	(4,295,000)		(4,295,000)	(49,000)
Transfers in and/or out of Level 3	(26,802,000)	9,434,000	27,923,000	46,127,000	(26,802,000)	9,434,000	27,923,000	46,127,000	(26,802,000)	9,434,000	27,923,000	46,106,000	(26,802,000)	9,434,000	27,810,000	4,065,000			113,000	42,041,000		(9,000)			9,434,000	(10,511,000)																		(26,802,000)		27,810,000	14,585,000			113,000	42,041,000				21,000
Other	378,000	644,000	1,279,000	2,087,000	378,000	644,000	1,279,000	2,087,000	378,000	644,000	1,279,000	2,087,000	(35,000)	(85,000)	(156,000)	(127,000)	413,000	729,000	1,435,000	2,214,000							(153,000)	(88,000)	(390,000)	(137,000)	413,000	650,000	1,435,000	2,138,000	3,000	1,000	10,000	(2,000)	(5,000)			(4,000)	(9,000)	122,000		242,000			81,000		81,000
Ending Balance	947,522,000	899,581,000	947,522,000	899,581,000	947,522,000	899,581,000	947,522,000	899,581,000	836,602,000	814,823,000	836,602,000	814,823,000	762,425,000	743,884,000	762,425,000	743,884,000	74,177,000	70,939,000	74,177,000	70,939,000	4,000	7,000	4,000	7,000	9,434,000	9,434,000	589,638,000	598,841,000	589,638,000	598,841,000	74,062,000	26,263,000	74,062,000	26,263,000	15,000,000		15,000,000	3,450,000	3,450,000	4,275,000	4,275,000	20,005,000	20,005,000	148,503,000	120,602,000	148,503,000	120,602,000	115,000	41,226,000	115,000	41,226,000	65,361,000	69,971,000	65,361,000	69,971,000	45,559,000	14,787,000	45,559,000	14,787,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	23,069,000	(20,613,000)	29,011,000	(18,071,000)	23,069,000	(20,613,000)	29,011,000	(18,071,000)	2,825,000	(1,619,000)	2,555,000	(1,093,000)					2,825,000	(1,619,000)	2,555,000	(1,093,000)											2,823,000	(734,000)	2,545,000	(656,000)				(60,000)	14,000									2,000	(825,000)	10,000	(451,000)					20,244,000	(18,994,000)	26,456,000	(16,978,000)
Liabilities:
Beginning Balance	651,184,000	356,129,000	574,075,000	333,793,000																																																								134,597,000	142,470,000	136,462,000	143,264,000	516,587,000	213,659,000	437,613,000	190,529,000
Total Realized and Unrealized Gains Included in Earnings	11,016,000	4,299,000	67,656,000	24,607,000																																																												11,016,000	4,299,000	67,565,000	24,607,000
Total Realized and Unrealized Losses Included in Earnings	118,545,000	241,451,000	258,285,000	290,992,000																																																								5,766,000	22,000	9,983,000	4,257,000	112,779,000	241,429,000	248,302,000	286,735,000
Sales		805,000		2,673,000																																																													805,000		2,673,000
Issuances	217,000	161,000	645,000	475,000																																																								217,000	161,000	645,000	475,000
Settlements	6,011,000	3,508,000	12,521,000	8,851,000																																																								6,011,000	3,508,000	12,521,000	8,851,000
Ending Balance	752,919,000	589,129,000	752,919,000	589,129,000																																																								134,569,000	139,145,000	134,569,000	139,145,000	618,350,000	449,984,000	618,350,000	449,984,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	(101,763,000)	(237,130,000)	(180,737,000)	(262,128,000)																																																												(101,763,000)	(237,130,000)	(180,737,000)	(262,128,000)
Transfers
Securities transferred into Level 3	26,800,000		54,700,000
Securities transferred out of Level 3			$ 26,800,000