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Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified |
Jun. 30, 2012
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Dec. 31, 2011
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| Commitments and Contingencies Disclosure [Abstract] | ||
| Letters of Credit Outstanding, Amount | $ 2.9 | $ 3.1 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
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