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QUARTERLY FINANCIAL INFORMATION (unaudited) - Note 15
12 Months Ended
Dec. 31, 2018
Contract with Customer, Liability, Current, Change  
Quarterly financial information (unaudited) - Note 15

15. QUARTERLY FINANCIAL INFORMATION (Unaudited)

The following table summarizes our unaudited quarterly financial information for the periods shown below (in thousands, except per share data):

      Fiscal Year 2018
      December 31,     September 30,     June 30,     March 31,
Revenue   $ 1,833    $ 11,572    $ 2,014    $ 2,188 
Gross profit     (2,606)     8,927      333      315 
Net income (loss)     (11,948)     289      (8,459)     (7,132)
Net loss per share, basic and diluted     (0.13)     -       (0.10)     (0.09)
                         
      Fiscal Year 2017
      December 31,     September 30,     June 30,     March 31,
Revenue   $ 2,302    $ 5,425    $ 1,339    $ 568 
Gross profit     (248)     (278)     346      (48)
Net income (loss)     (8,119)     (5,762)     (5,656)     (5,949)
Net loss per share, basic and diluted     (0.10)     (0.08)     (0.08)     (0.09)