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Fair Value Measurements (Quantitative Information Used As Level 3 Inputs) (Details) (Fair Value, Inputs, (Level 3), USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Assets, fair value | $ 378,609
Liabilities, fair value | 1,307
Corporate | Discounted Cash Flow Valuation Technique |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Assets, fair value | 15,846
Corporate | Discounted Cash Flow Valuation Technique | Weighted Average or Actual |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Credit spread | 2.10%
Liquidity discount | 1.00%
Risk-free rate | 0.30%
Dividend rate | 6.20%
Corporate | Internal Valuation Model Valuation Technique |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Assets, fair value | 21,292
Fixed maturity investments |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Assets, fair value | 37,138
Private equity partnerships | Net Asset Valuation Technique |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Assets, fair value | 325,711
Private equity partnerships | Net Asset Valuation Technique | Low |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Estimated performance | (4.40%)
Private equity partnerships | Net Asset Valuation Technique | Maximum |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Estimated performance | 75.50%
Private equity partnerships | Net Asset Valuation Technique | Weighted Average or Actual |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Estimated performance | 4.10%
Senior secured bank loan funds | Net Asset Valuation Technique |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Assets, fair value | 13,656
Senior secured bank loan funds | Net Asset Valuation Technique | Weighted Average or Actual |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Estimated performance | 0.90%
Hedge funds | Net Asset Valuation Technique |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Assets, fair value | 3,411
Hedge funds | Net Asset Valuation Technique | Low |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Estimated performance | 0.00%
Hedge funds | Net Asset Valuation Technique | Maximum |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Estimated performance | 0.00%
Hedge funds | Net Asset Valuation Technique | Weighted Average or Actual |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Estimated performance | 0.00%
Other Investments |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Assets, fair value | 342,778
Weather Contract | Internal Valuation Model Valuation Technique |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Liabilities, fair value | 1,307
Private equity partnerships | Net Asset Valuation Technique |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Assets, fair value | 325,711
Senior secured bank loan funds | Net Asset Valuation Technique |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Assets, fair value | 13,656
Hedge funds | Net Asset Valuation Technique |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |
Assets, fair value | $ 3,411

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- Definition Estimated percentage return for the period on fair value at beginning of period. + References No definition available. + Details
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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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- Definition Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). + 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 (e) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Risk-free interest rate assumption used in valuing an instrument. + 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 (e) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly. + 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 (bbb) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Risk associated with risk of default, credit spread risk and downgrade risk, expressed as a percentage, used as an input to measure fair value. + 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 (bbb) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity. + References No definition available. + Details
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