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Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Details) - Reconciliation of Basic and Diluted Loss per Share (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Basic and diluted loss per share:    
Net loss $ (4,070) $ (1,428)
Basic and diluted loss per share:    
Weighted average shares outstanding 51,725 44,699
Basic and diluted net loss per share $ (0.08) $ (0.03)