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Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2011
Income Taxes (Textual) [Abstract]
Tax benefit from the exercise of warrants in prior years	$ 4.2
Tax loss carryforwards	10.4
Reimbursement claim on paid sales tax	$ 0.7

The sum of the tax effects as of the balance sheet date of the amount of excesses of tax deductions over gross income in a year which cannot be used on the tax returns in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset.

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