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Consolidated Condensed Schedule Of Investments (Repurchase Agreements) (Repurchase Agreements [Member], USD $)
In Thousands, unless otherwise specified |
9 Months Ended | 12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2012
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Dec. 31, 2011
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Sep. 30, 2012
Bank Of America Securities Collateralized By Par Value $13,000 U.S. Treasury Note, Coupon 1.75%, Maturity Date 2016-05 [Member]
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Dec. 31, 2011
Bank of America Securities Collateralized By Par Value $15,000 U.S. Treasury Note, Coupon 1.75%, Maturity Date 2016-05 [Member]
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| Schedule of Investments [Line Items] | ||||||||||||
| Current Principal/Notional Amount | $ 13,780 | [1],[2] | $ 15,750 | [1],[2] | ||||||||
| Securities collateralized by par value | 13,000 | [1],[2] | 15,000 | [1],[2] | ||||||||
| U.S. treasury note, coupon | 1.75% | [1],[2] | 1.75% | [1],[2] | ||||||||
| Maturity date of securities | 2016-05 | [1],[2] | 2016-05 | [1],[2] | ||||||||
| Description | Bank of America SecuritiesCollateralized by Par Value $13,000U.S. Treasury Note, Coupon 1.75%,Maturity Date 2016-05 | [1],[2] | Bank of America SecuritiesCollateralized by Par Value $15,000U.S. Treasury Note, Coupon 1.75%,Maturity Date 2016-05 | [1],[2] | ||||||||
| Rate | 0.25% | [1],[2] | 0.01% | [1],[2] | ||||||||
| Investments maturity date | 2012-10 | [1],[2] | 2012-01 | [1],[2] | ||||||||
| Fair value | 13,780 | [1],[2] | 15,750 | [1],[2] | 13,780 | [1],[2] | 15,750 | [1],[2] | ||||
| Repurchase agreements, cost | $ 13,780 | [1],[2] | $ 15,750 | [1],[2] | ||||||||
| Investments owned as a percentage of net assets | 2.76% | [1],[2] | 4.24% | [1],[2] | ||||||||
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