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Condensed Consolidated Statements of Changes in Stockholders' Equity - 9 months ended Sep. 30, 2015 - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Income [Member]
Accumulated Deficit (Earnings) [Member]
Balance at the beginning of the period at Dec. 31, 2014 $ 9,773 $ 1 $ 98,133 $ 469 $ (88,830)
Balance at the beginning of the period (in shares) at Dec. 31, 2014   9,424      
Issuance of common stock under employee stock option and stock purchase plans 255   255    
Issuance of common stock under employee stock option and stock purchase plans (in shares)   65      
Issuance of common stock under registered follow-on offering, net 23,576   23,576    
Issuance of common stock under registered follow-on offering, net (in shares)   1,500      
Stock-based compensation 474   474    
Issuance of common stock upon the exercise of warrants 2,503   2,503    
Issuance of common stock upon the exercise of warrants (in shares)   638      
Foreign currency translation adjustment (469)     (469)  
Loss from discontinued operations (318)       (318)
Income (loss) from continuing operations 7,814       7,814
Balance at the end of the period at Sep. 30, 2015 $ 43,608 $ 1 $ 124,941 $ 0 $ (81,334)
Balance at the end of the period (in shares) at Sep. 30, 2015   11,627