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Warrants And Other Derivatives (Narrative) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
 0 Months Ended 3 Months Ended 0 Months Ended 3 Months Ended
Apr. 04, 2012
Apr. 04, 2012
Maximum [Member]
Apr. 04, 2012
Minimum [Member]
Apr. 04, 2012
Securities Purchase Agreement [Member]
Jun. 30, 2012
Securities Purchase Agreement [Member]
Jun. 30, 2012
Convertible Bond [Member]
Jun. 05, 2012
Loan And Security Agreement [Member]
Jun. 30, 2012
Loan And Security Agreement [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]                
Exercise price       $ 5.45     $ 3.59  
Shares warranted to purchase 3.1              
Percentage in excess of Maximum Percentage   9.99% 4.99%          
Change in fair value of warrants         $ 1.5 $ 0.8   $ 0.1