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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, unless otherwise specified |
Jun. 30, 2013
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Dec. 31, 2012
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|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Fixed maturities, available for sale, amortized cost | $ 11,687,387 | $ 11,605,672 |
| Equity securities, available for sale, cost | 546,531 | 608,306 |
| Short term investments, amortized cost | $ 45,904 | $ 108,860 |
| Common shares, shares issued | 173,906 | 171,867 |
| Common shares, shares outstanding | 111,588 | 117,920 |
| Treasury shares, shares | 62,318 | 53,947 |
| X | ||||||||||
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- Definition
This item represents the cost of equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. No definition available.
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| X | ||||||||||
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- Definition
Amount of available-for-sale debt securities at cost, net of adjustments, which include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amortized cost of short-term investments in debt and equity securities and other forms of securities that provide ownership interests classified as available-for-sale. No definition available.
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| X | ||||||||||
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- Definition
Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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