INVESTMENTS (Details 7) - 10K (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair value
Less than 12 months	$ 227,874	$ 682,254
12 Months and Greater	106,657	3,188
Total Fair value	334,531	685,442
Cost or amortized Cost
Less than 12 months	233,338	710,949
12 months and greater	108,312	3,426
Total Cost or Amortized Cost	341,650	714,375
Unrealized Loss
Less than 12 months	(5,464)	(28,695)
12 Months and Greater	(1,655)	(238)
Total Unrealized Loss	(7,119)	(28,933)
Debt securities
Fair value
Less than 12 months	217,037	679,860
12 Months and Greater	106,657	3,188
Total Fair value	323,694	683,048
Cost or amortized Cost
Less than 12 months	221,503	708,280
12 months and greater	108,312	3,426
Total Cost or Amortized Cost	329,815	711,706
Unrealized Loss
Less than 12 months	(4,466)	(28,420)
12 Months and Greater	(1,655)	(238)
Total Unrealized Loss	(6,121)	(28,658)
U.S. government
Fair value
Less than 12 months	4,416
Total Fair value	4,416
Cost or amortized Cost
Less than 12 months	4,427
Total Cost or Amortized Cost	4,427
Unrealized Loss
Less than 12 months	(11)
Total Unrealized Loss	(11)
U.S. Agency
Fair value
Less than 12 months		5,760
Total Fair value		5,760
Cost or amortized Cost
Less than 12 months		5,997
Total Cost or Amortized Cost		5,997
Unrealized Loss
Less than 12 months		(237)
Total Unrealized Loss		(237)
Non-U.S. govt. & agency
Fair value
Less than 12 months		1,825
Total Fair value		1,825
Cost or amortized Cost
Less than 12 months		1,890
Total Cost or Amortized Cost		1,890
Unrealized Loss
Less than 12 months		(65)
Total Unrealized Loss		(65)
Mortgage-backed
Fair value
Less than 12 months	12,840	118,283
12 Months and Greater	61,534
Total Fair value	74,374	118,283
Cost or amortized Cost
Less than 12 months	12,947	124,034
12 months and greater	62,803
Total Cost or Amortized Cost	75,750	124,034
Unrealized Loss
Less than 12 months	(107)	(5,751)
12 Months and Greater	(1,269)
Total Unrealized Loss	(1,376)	(5,751)
ABS/CMBS
Fair value
Less than 12 months	63,782	54,115
12 Months and Greater	11,616
Total Fair value	75,398	54,115
Cost or amortized Cost
Less than 12 months	64,084	56,014
12 months and greater	11,725
Total Cost or Amortized Cost	75,809	56,014
Unrealized Loss
Less than 12 months	(302)	(1,899)
12 Months and Greater	(109)
Total Unrealized Loss	(411)	(1,899)
Corporate Debt
Fair value
Less than 12 months	123,617	190,470
12 Months and Greater	14,488	2,245
Total Fair value	138,105	192,715
Cost or amortized Cost
Less than 12 months	127,634	198,250
12 months and greater	14,661	2,477
Total Cost or Amortized Cost	142,295	200,727
Unrealized Loss
Less than 12 months	(4,017)	(7,780)
12 Months and Greater	(173)	(232)
Total Unrealized Loss	(4,190)	(8,012)
Municipal
Fair value
Less than 12 months	12,382	309,407
12 Months and Greater	19,019	943
Total Fair value	31,401	310,350
Cost or amortized Cost
Less than 12 months	12,411	322,095
12 months and greater	19,123	949
Total Cost or Amortized Cost	31,534	323,044
Unrealized Loss
Less than 12 months	(29)	(12,688)
12 Months and Greater	(104)	(6)
Total Unrealized Loss	(133)	(12,694)
Equity securities
Fair value
Less than 12 months	10,837	2,394
Total Fair value	10,837	2,394
Cost or amortized Cost
Less than 12 months	11,835	2,669
Total Cost or Amortized Cost	11,835	2,669
Unrealized Loss
Less than 12 months	(998)	(275)
Total Unrealized Loss	$ (998)	$ (275)