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INVESTMENTS (DETAILS 4) (USD $) |  |  |  |  |  |  | 6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended |  |  | 6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended |  |  |  | 3 Months Ended |  |  |  |
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Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2014 Hedge Funds [Member] Lockup Redemption Restriction [Member] | Dec. 31, 2013 Hedge Funds [Member] Lockup Redemption Restriction [Member] | Jun. 30, 2014 Hedge Funds [Member] Other Redemption Restriction [Member] | Dec. 31, 2013 Hedge Funds [Member] Other Redemption Restriction [Member] | Jun. 30, 2014 Long/short equity funds [Member] | Dec. 31, 2013 Long/short equity funds [Member] | Jun. 30, 2014 Long/short equity funds [Member] Minimum [Member] | Dec. 31, 2013 Long/short equity funds [Member] Minimum [Member] | Jun. 30, 2014 Long/short equity funds [Member] Maximum [Member] | Dec. 31, 2013 Long/short equity funds [Member] Maximum [Member] | Jun. 30, 2014 Multi-strategy funds [Member] | Dec. 31, 2013 Multi-strategy funds [Member] | Jun. 30, 2014 Multi-strategy funds [Member] Other Redemption Restriction [Member] | Nov. 21, 2013 Multi-strategy funds [Member] Other Redemption Restriction [Member] | Jun. 30, 2014 Multi-strategy funds [Member] Minimum [Member] | Dec. 31, 2013 Multi-strategy funds [Member] Minimum [Member] | Jun. 30, 2014 Multi-strategy funds [Member] Maximum [Member] | Dec. 31, 2013 Multi-strategy funds [Member] Maximum [Member] | Jun. 30, 2014 Event driven funds [Member] | Dec. 31, 2013 Event driven funds [Member] | Jun. 30, 2014 Event driven funds [Member] Minimum [Member] | Dec. 31, 2013 Event driven funds [Member] Minimum [Member] | Jun. 30, 2014 Event driven funds [Member] Maximum [Member] | Dec. 31, 2013 Event driven funds [Member] Maximum [Member] | Jun. 30, 2014 Leveraged bank loan funds [Member] | Dec. 31, 2013 Leveraged bank loan funds [Member] | Jun. 30, 2014 Direct Lending Funds [Member] | Dec. 31, 2013 Direct Lending Funds [Member] | Jun. 30, 2014 Direct Lending Funds [Member] Other Redemption Restriction [Member] | Dec. 31, 2013 Direct Lending Funds [Member] Other Redemption Restriction [Member] | Jun. 30, 2014 Direct Lending Funds [Member] Minimum [Member] | Jun. 30, 2014 Direct Lending Funds [Member] Maximum [Member] | Jun. 30, 2014 CLO-Equities [Member] | Dec. 31, 2013 CLO-Equities [Member] | Jun. 30, 2014 CLO-Equities [Member] Other Redemption Restriction [Member] | Aug. 01, 2013 CLO-Equities [Member] Other Redemption Restriction [Member]
Other Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other investments | $ 1,044,492,000 | $ 1,045,810,000 |  |  |  |  | $ 373,539,000 | $ 425,444,000 |  |  |  |  | $ 306,215,000 | $ 285,155,000 |  |  |  |  |  |  | $ 191,735,000 | $ 190,458,000 |  |  |  |  | $ 48,430,000 | $ 48,753,000 | $ 33,467,000 | $ 22,134,000 |  |  |  |  | $ 91,106,000 | $ 73,866,000 |  |
Percentage of total fair value | 100.00% | 100.00% |  |  |  |  | 36.00% | 41.00% |  |  |  |  | 29.00% | 27.00% |  |  |  |  |  |  | 18.00% | 18.00% |  |  |  |  | 5.00% | 5.00% | 3.00% | 2.00% |  |  |  |  | 9.00% | 7.00% |  |
Redemption frequency |  |  |  |  |  |  | Quarterly, Semi-annually | Monthly, Quarterly, Semi-annually |  |  |  |  | Quarterly, Semi-annually | Quarterly, Semi-annually |  |  |  |  |  |  | Quarterly, Annually | Quarterly, Annually |  |  |  |  | Quarterly | Quarterly |  |  |  |  |  |  |  |  |  |
Redemption notice period |  |  |  |  |  |  |  |  | 30 days | 30 days | 60 days | 60 days |  |  |  |  | 60 days | 60 days | 95 days | 95 days |  |  | 45 days | 45 days | 60 days | 60 days | 65 days | 65 days |  |  |  |  |  |  |  |  |  |
Fair value of other investments subject to redemption restrictions |  |  | 71,000,000 | 99,000,000 | 8,000,000 | 11,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 33,467,000 | 22,134,000 |  |  |  |  |  |
Percentage of fair value of other investments subject to redemption restrictions |  |  | 8.00% | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.00% | 2.00% |  |  |  |  |  |
Unfunded commitments related to other investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 47,000,000 | $ 60,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 77,000,000 | $ 88,000,000 |  |  |  |  | $ 7,000,000 | $ 60,000,000
Investment term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years | 10 years |  |  |  |
Optional extension of investment term |  |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |

X
- Definition The percentage of the total fair value of investments in certain entities that calculate net asset value per share, including, but not limited to, by unit, membership interest, or other ownership interest. Investments include, but are not limited to, investments in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. + References No definition available. + Details
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- Definition States the notice requirement (for example, 30 to 60 days) the entity is required to deliver before it can redeem its investment, or portion thereof, for each of those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments), by major category. + References No definition available. + Details
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- Definition The total value of investments that cannot be redeemed because of a redemption restriction as of the statement of financial position date. + References No definition available. + Details
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- Definition Period by which the General Partner of an investment for which net asset value per dhsare is calculated has the option to extend a redemption restriction related to investments for which net asset value per share is calculated, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Fair value of investments in certain entities that calculate net asset value per share, including, but not limited to, by unit, membership interest, or other ownership interest. Investments include, but are not limited to, investments in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=SL6742756-110258 + Details
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- Definition States the frequency (for example, annually, semi-annually, quarterly) with which the entity can redeem its investment, or portion thereof, for each of those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments), by major category. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=25499696&loc=SL6742756-110258 + Details
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- Definition The percentage of the total value of investments that cannot be redeemed because of a redemption restriction as of the statement of financial position date. + References No definition available. + Details
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- Definition Remaining period of a redemption restriction related to investments for which net asset value per share is calculated, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=25499696&loc=SL6742756-110258 + Details
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- Definition The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25499696&loc=SL6742756-110258 + Details
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