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Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Deferred Tax Benefits From Options and Warrants Exercises	$ 6.4
Deferred Tax Assets, Operating Loss Carryforwards, Domestic		37.7
Operating Loss Carryforwards, Expiration Dates	Fiscal 2020 through 2032
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	$ 21.4
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Expiration Dates	Fiscal 2018 through 2032

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

+ References+ Details

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

+ References+ Details