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Commitments and Contingencies (Details Textual) (USD $)	6 Months Ended
Commitments and Contingencies (Details Textual) (USD $)	Jun. 30, 2012
Lease Expiration Date	Oct. 31, 2015
Defined Benefit Plan, Special Termination Benefits	$ 1,166,000

The amount of increase related to special termination benefits offered to and accepted by employees in connection with their termination of employment that are only offered for a short period of time. A situation involving termination benefits may also involve a curtailment.

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