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Condensed Consolidated Statements of Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Accumulated Other Comprehensive Income
Balance at Dec. 31, 2016 $ 3,570 $ 74,515 $ 42,134 $ (114,322) $ 1,243
Balance (in shares) at Dec. 31, 2016   13,643      
Stock options issued | Contractors [Member] 56 $ 0 56 0 0
Stock options issued | Employees [Member] 41 0 41 0 0
Net loss (806) 0 0 (806) 0
Balance at Mar. 31, 2017 2,861 $ 74,515 42,231 (115,128) 1,243
Balance (in shares) at Mar. 31, 2017   13,643      
Balance at Dec. 31, 2016 3,570 $ 74,515 42,134 (114,322) 1,243
Balance (in shares) at Dec. 31, 2016   13,643      
Net loss (4,756)        
Balance at Sep. 30, 2017 8,858 $ 83,062 43,631 (119,078) 1,243
Balance (in shares) at Sep. 30, 2017   15,857      
Balance at Mar. 31, 2017 2,861 $ 74,515 42,231 (115,128) 1,243
Balance (in shares) at Mar. 31, 2017   13,643      
Stock options issued | Contractors [Member] 286 $ 0 286 0 0
Stock options issued | Employees [Member] 461 0 461 0 0
Exercise of stock options 98 $ 191 (93) 0 0
Exercise of stock options (in shares)   86      
Rights offering 7,571 $ 7,571 0 0 0
Rights offering (in shares)   1,900      
Net loss (1,598) $ 0 0 (1,598) 0
Balance at Jun. 30, 2017 9,679 $ 82,277 42,885 (116,726) 1,243
Balance (in shares) at Jun. 30, 2017   15,629      
Stock options issued | Contractors [Member] 210 $ 0 210 0 0
Stock options issued | Employees [Member] 907 0 907 0 0
Exercise of stock options 383 $ 743 (360) 0 0
Exercise of stock options (in shares)   207      
Exercise of warrants 31 $ 42 (11) 0 0
Exercise of warrants (in shares)   21      
Net loss (2,352) $ 0 0 (2,352) 0
Balance at Sep. 30, 2017 $ 8,858 $ 83,062 $ 43,631 $ (119,078) $ 1,243
Balance (in shares) at Sep. 30, 2017   15,857