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CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Development revenues:        
Government contracts and other $ 4,771 $ 454 $ 5,810 $ 2,270
Total development revenues 4,771 454 5,810 2,270
Operating expenses:        
Research and development 921 1,226 3,636 3,887
Sales and marketing 94 118 305 596
General and administrative 1,076 1,337 3,313 4,639
Total operating expenses 2,091 2,681 7,254 9,122
Operating income (loss) 2,680 (2,227) (1,444) (6,852)
Other income (expense):        
Interest income 6 11 20 30
Interest expense (366) (513) (1,477) (1,379)
Change in fair value of warrants (561) 1,676 (69) 1,676
Warrant issuance cost (1,233) (343) (1,233) (343)
Total other income (expense) (2,154) 831 (2,759) (16)
Income (loss) from continuing operations 526 (1,396) (4,203) (6,868)
Loss from discontinued operations   (934) (7,568) (3,530)
Net Income (loss) 526 (2,330) (11,771) (10,398)
Income (Loss) from continuing operations 526 (1,396) (4,203) (6,868)
Beneficial conversion feature for convertible preferred stock (554) (2,487) (554) (2,487)
Net loss allocable to common stockholders - continuing operations $ (28) (3,883) (4,757) (9,355)
Net loss allocable to common stockholders - discontinued operations   $ (934) $ (7,568) $ (3,530)
Basic and diluted net loss per share attributable to common stockholders from continuing operations $ (0.03) $ (22.27) $ (8.78) $ (67.09)
Basic and diluted net loss per share attributable to common stockholders from discontinued operations   (5.36) (13.97) (25.31)
Net loss per share, basic and diluted $ (0.03) $ (27.63) $ (22.75) $ (92.40)
Basic and diluted weighted average shares used in calculating net loss per share attributable to common stockholders 826,548 174,324 541,777 139,452
Comprehensive income (loss):        
Net income (loss) $ 526 $ (2,330) $ (11,771) $ (10,398)
Other comprehensive loss – foreign currency translation adjustments   (55)   (205)
Comprehensive income (loss) $ 526 $ (2,385) $ (11,771) $ (10,603)