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Income Taxes (Details Textual) (USD $)	3 Months Ended
Income Taxes (Details Textual) (USD $)	Mar. 31, 2013
Income Taxes (Textual) [Abstract]
Unrecognized tax benefits	$ 685,000
Unrecognized tax benefits, interest	58,000
Unrecognized tax benefits that would affect the Company's effective tax rate	257,000
Changes in the amount of unrecognized tax benefits	$ 0

This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

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