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Available-for-Sale Securities, at Fair Value Schedule of Realized Gain (Loss) (Details) (USD $)
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3 Months Ended | |
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Mar. 31, 2012
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Mar. 31, 2011
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| Schedule of Available-for-sale Securities [Line Items] | ||
| Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds | $ 170,100,000 | $ 71,400,000 |
| Available-for-sale Securities, Gross Realized Gains (Losses), Amortized Cost Sold | 159,000,000 | 69,800,000 |
| Available-for-sale Securities, Gross Realized Gains | 11,103,000 | 1,808,000 |
| Available-for-sale Securities, Gross Realized Losses | 0 | (170,000) |
| Available-for-sale Securities, Gross Realized Gain (Loss) | $ 11,103,000 | $ 1,638,000 |
| X | ||||||||||
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- Definition
The total amount of amortized cost of securities, categorized neither as held-to-maturity nor trading securities, sold during the reporting period. No definition available.
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- Definition
This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total amount of proceeds received for the sale of securities, categorized neither as held-to-maturity nor trading securities, during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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