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DERIVATIVE INSTRUMENTS (DETAILS 3) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2016 | Mar. 31, 2015
Unrealized and Realized Gains (Losses) Recognized in Earnings for Derivatives Not Designated As Hedges [Line Items] |  |
Unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges | $ 450 | $ (5,400)
Investment Portfolio [Member] | Foreign Exchange Forward Contracts [Member] | Net Realized Investment Gains (Losses) [Member] |  |
Unrealized and Realized Gains (Losses) Recognized in Earnings for Derivatives Not Designated As Hedges [Line Items] |  |
Unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges | (2,520) | 6,537
Investment Portfolio [Member] | Interest Rate Swap [Member] | Net Realized Investment Gains (Losses) [Member] |  |
Unrealized and Realized Gains (Losses) Recognized in Earnings for Derivatives Not Designated As Hedges [Line Items] |  |
Unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges | 0 | (4,006)
Underwriting Portfolio [Member] | Foreign Exchange Forward Contracts [Member] | Foreign Exchange Gains (Losses) [Member] |  |
Unrealized and Realized Gains (Losses) Recognized in Earnings for Derivatives Not Designated As Hedges [Line Items] |  |
Unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges | 3,202 | (15,273)
Underwriting Portfolio [Member] | Weather Related Derivative [Member] | Other Insurance Related Income [Member] |  |
Unrealized and Realized Gains (Losses) Recognized in Earnings for Derivatives Not Designated As Hedges [Line Items] |  |
Unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges | (475) | 7,342
Underwriting Portfolio [Member] | Commodity Contract [Member] | Other Insurance Related Income [Member] |  |
Unrealized and Realized Gains (Losses) Recognized in Earnings for Derivatives Not Designated As Hedges [Line Items] |  |
Unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges | $ 243 | $ 0

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 + Details
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