Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Income Taxes [Line Items]
Deferred Tax Benefits From Options and Warrants Exercises	$ 6.4
Deferred Tax Assets, Operating Loss Carryforwards, Domestic		37.7
Operating Loss Carry forwards Expiration Dates Description	Fiscal 2020 through 2032
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	$ 21.4
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Operating Loss Carry forwards Expiration Dates Description	Fiscal 2018 through 2032