v2.4.0.6

Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Level 3 Inputs) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of the period | $ 494,520 | $ 472,021 | $ 452,813 | $ 400,386
Total unrealized gains (losses) |  |  |  |
Included in net investment income | (13,076) | 5,573 | 16,108 | 29,371
Included in other income (loss) | (15,576) | 91 | 2,987 | 41,599
Total realized gains |  |  |  |
Included in net investment income | 0 | 0 | 0 | 0
Included in other income (loss) | 22,076 | 3,307 | (33,232) | 12,822
Total foreign exchange losses | (1,023) | 462 | (670) | 1,780
Purchases | 46,834 | 20,203 | 68,804 | 39,299
Sales | (91,655) | (6,864) | (105,086) | (11,024)
Settlements | 10,365 | (19,414) | 50,741 | (38,854)
Net transfers into Level 3 | 0 | 0 | 0 | 0
Balance at end of the period | 452,465 | 475,379 | 452,465 | 475,379
Change in unrealized gains (losses) for the period included in earnings for assets held at the end of the period included in net investment income | (13,076) | 5,573 | 16,108 | 29,371
Change in unrealized gains (losses) for the period included in earnings for assets held at the end of the period included in other income (loss) | 8,019 | 4,195 | 9,678 | 48,598
Fixed maturity investments [Member] |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of the period | 27,838 | 21,826 | 27,761 | 21,785
Total unrealized gains (losses) |  |  |  |
Included in net investment income | (63) | (562) | 14 | (521)
Included in other income (loss) | 0 | 0 | 0 | 0
Total realized gains |  |  |  |
Included in net investment income | 0 | 0 | 0 | 0
Included in other income (loss) | 0 | 0 | 0 | 0
Total foreign exchange losses | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Settlements | 0 | 0 | 0 | 0
Net transfers into Level 3 | 0 | 0 | 0 | 0
Balance at end of the period | 27,775 | 21,264 | 27,775 | 21,264
Change in unrealized gains (losses) for the period included in earnings for assets held at the end of the period included in net investment income | (63) | (562) | 14 | (521)
Change in unrealized gains (losses) for the period included in earnings for assets held at the end of the period included in other income (loss) | 0 | 0 | 0 | 0
Other Investments [Member] |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of the period | 418,537 | 381,815 | 396,526 | 362,102
Total unrealized gains (losses) |  |  |  |
Included in net investment income | (13,013) | 6,135 | 16,094 | 29,892
Included in other income (loss) | 0 | 0 | 0 | 0
Total realized gains |  |  |  |
Included in net investment income | 0 | 0 | 0 | 0
Included in other income (loss) | 0 | 0 | 0 | 0
Total foreign exchange losses | (1,394) | 553 | (664) | 1,922
Purchases | 5,956 | 11,219 | 18,645 | 28,684
Sales | 0 | 0 | 0 | 0
Settlements | (19,581) | (18,599) | (40,096) | (41,477)
Net transfers into Level 3 | 0 | 0 | 0 | 0
Balance at end of the period | 390,505 | 381,123 | 390,505 | 381,123
Change in unrealized gains (losses) for the period included in earnings for assets held at the end of the period included in net investment income | (13,013) | 6,135 | 16,094 | 29,892
Change in unrealized gains (losses) for the period included in earnings for assets held at the end of the period included in other income (loss) | 0 | 0 | 0 | 0
Other Assets and (Liabilities) [Member] |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of the period | 48,145 | 68,380 | 28,526 | 16,499
Total unrealized gains (losses) |  |  |  |
Included in net investment income | 0 | 0 | 0 | 0
Included in other income (loss) | (15,576) | 91 | 2,987 | 41,599
Total realized gains |  |  |  |
Included in net investment income | 0 | 0 | 0 | 0
Included in other income (loss) | 22,076 | 3,307 | (33,232) | 12,822
Total foreign exchange losses | 371 | (91) | (6) | (142)
Purchases | 40,878 | 8,984 | 50,159 | 10,615
Sales | (91,655) | (6,864) | (105,086) | (11,024)
Settlements | 29,946 | (815) | 90,837 | 2,623
Net transfers into Level 3 | 0 | 0 | 0 | 0
Balance at end of the period | 34,185 | 72,992 | 34,185 | 72,992
Change in unrealized gains (losses) for the period included in earnings for assets held at the end of the period included in net investment income | 0 | 0 | 0 | 0
Change in unrealized gains (losses) for the period included in earnings for assets held at the end of the period included in other income (loss) | $ 8,019 | $ 4,195 | $ 9,678 | $ 48,598

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- Definition This item represents the amount of the total realized gains or losses for the period which are included in the statement of income (or changes in net assets) in other income. The fair value of which assets was or is measured on a recurring basis using significant unobservable inputs (Level 3). + References No definition available. + Details
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- Definition This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets) in other income. Such unrealized (holding) gains or losses relate to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 + Details
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- Definition Purchases that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 + Details
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- Definition Sales that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 + Details
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- Definition Settlements that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 + Details
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- Definition This element represents [net] transfers in to and out of assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c(3) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 + Details
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- Definition This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 + Details
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