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Investments (Details Textual) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Investments (Textual) [Abstract]
Deposits at fair value	$ 3.9	$ 3.8

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- Definition

Deposits at fair value.

+ References

No definition available.

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Balance Type:	debit
Period Type:	instant

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- Details

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