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INVESTMENTS (DETAILS 5) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Net Investment Income [Line Items] | |||||||||||
| Gross investment income | $ 440,838 | $ 409,088 | $ 387,947 | ||||||||
| Investment expenses | (31,526) | (28,131) | (25,517) | ||||||||
| Net investment income | 113,863 | 103,429 | 83,112 | 108,908 | 86,847 | 103,638 | 74,449 | 116,023 | 409,312 | 380,957 | 362,430 |
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Fixed Maturities [Member]
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| Net Investment Income [Line Items] | |||||||||||
| Gross investment income | 293,609 | 304,400 | 337,616 | ||||||||
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Other Investments [Member]
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| Net Investment Income [Line Items] | |||||||||||
| Gross investment income | 128,814 | 87,660 | 31,856 | ||||||||
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Equity Securities [Member]
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| Net Investment Income [Line Items] | |||||||||||
| Gross investment income | 10,897 | 11,904 | 11,186 | ||||||||
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Cash And Cash Equivalents [Member]
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| Net Investment Income [Line Items] | |||||||||||
| Gross investment income | 6,337 | 4,528 | 5,697 | ||||||||
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Short-term Investments [Member]
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| Net Investment Income [Line Items] | |||||||||||
| Gross investment income | $ 1,181 | $ 596 | $ 1,592 | ||||||||