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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Income Statement [Abstract] |  |  |  |
Sales | $ 6,568 | $ 3,691 | $ 12,391 | $ 7,088
Cost of sales | 2,096 | 1,154 | 4,199 | 2,339
Gross profit | 4,472 | 2,537 | 8,192 | 4,749
Other costs and expenses: |  |  |  |
Research and development | 888 | 763 | 1,698 | 1,277
Professional services | 1,633 | 681 | 3,424 | 1,187
Salaries and related costs | 3,333 | 1,813 | 6,554 | 3,615
Selling, general and administrative | 3,083 | 2,213 | 6,184 | 4,323
Total other costs and expenses | 8,937 | 5,470 | 17,860 | 10,402
Loss from operations | (4,465) | (2,933) | (9,668) | (5,653)
Interest income | 403 | 0 | 826 | 0
Interest expense | 0 | (38) | 0 | (72)
Other losses | (200) | 0 | (225) | 0
Change in value of derivative liabilities | 0 | 46 | 0 | 20
Total other income (expense), net | 203 | 8 | 601 | (52)
Loss before income taxes | (4,262) | (2,925) | (9,067) | (5,705)
Income tax expense (benefit) | 76 | 13 | (48) | 24
Loss from continuing operations | (4,338) | (2,938) | (9,019) | (5,729)
Income from discontinued operations, net of tax | 0 | 2,666 | 0 | 4,522
Net loss | $ (4,338) | $ (272) | $ (9,019) | $ (1,207)
EPS from continuing operations: |  |  |  |
Basic (in dollars per share) | $ (0.13) | $ (90.00) | $ (270.00) | $ (170.00)
Diluted (in dollars per share) | (0.13) | (90.00) | (270.00) | (170.00)
EPS from discontinued operations: |  |  |  |
Basic (in dollars per share) | 0.00 | 80.00 | 0.00 | 130.00
Diluted (in dollars per share) | 0.00 | 80.00 | 0.00 | 130.00
EPS from total operations: |  |  |  |
Basic (in dollars per share) | (0.13) | (10.00) | (270.00) | (40.00)
Diluted (in dollars per share) | $ (0.13) | $ (10.00) | $ (270.00) | $ (40.00)

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