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INVESTMENTS (DETAILS 7) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net Investment Income [Line Items]
Gross investment income	$ 125,004	$ 53,562	$ 281,498	$ 250,300
Investment expenses	(8,081)	(7,877)	(23,680)	(23,964)
Net investment income	116,923	45,685	257,818	226,336
Fixed Maturities [Member]
Net Investment Income [Line Items]
Gross investment income	75,827	75,980	229,423	220,066
Other Investments [Member]
Net Investment Income [Line Items]
Gross investment income	38,248	(27,421)	25,770	17,616
Equity Securities [Member]
Net Investment Income [Line Items]
Gross investment income	4,633	3,445	12,843	7,795
Mortgage loans [Member]
Net Investment Income [Line Items]
Gross investment income	2,191	482	5,683	776
Cash And Cash Equivalents [Member]
Net Investment Income [Line Items]
Gross investment income	3,768	993	7,071	3,770
Short-term Investments [Member]
Net Investment Income [Line Items]
Gross investment income	$ 337	$ 83	$ 708	$ 277

X

- Definition

The net gain or loss (both realized and unrealized) related to investments in certain entities that calculate net asset value per share and the amount after accretion (amortization) of discount (premium), of interest income and dividend income on nonoperating securities.

+ References

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- Definition

The net gain or loss (both realized and unrealized) related to investments in certain entities that calculate net asset value per share and the amount after accretion (amortization) of discount (premium) of interest income and dividend income on nonoperating securities, net of investment expense.

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- Definition

Amount of expenses related to the generation of investment income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.9)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.2)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

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