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QUARTERLY FINANCIAL INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016
Total revenue | $ 8,134 | $ 6,820 | $ 5,042 | $ 3,436 | $ 2,922 | $ 3,627 | $ 3,286 | $ 3,477 | $ 23,432 |  | $ 13,313 |
Less: cost of revenue and operating expenses | 4,542 | 3,885 | 3,108 | 2,953 | 2,404 | 3,005 | 3,436 | 3,827 |  |  |  |
Income (loss) from operations | 3,592 | 2,935 | 1,934 | 483 | 518 | 622 | (150) | (350) | 8,944 |  | 640 |
Income (loss) before income taxes | 3,348 | 2,244 | 1,540 | 362 | 223 | 532 | (227) | (444) |  |  |  |
Net income | $ 3,308 | $ 2,200 | $ 1,504 | $ 353 | $ 208 | $ 532 | $ (227) | $ (444) | $ 7,365 | [1] | $ 69 | [1]
Net income per common share: |  |  |  |  |  |  |  |  |  |  |  |
Basic income per common share - net income | $ 0.10 | $ 0.07 | $ 0.05 | $ 0.01 | $ 0.01 | $ 0.02 | $ (0.01) | $ (0.01) |  |  |  |
Diluted income per common share - net income | $ 0.10 | $ 0.07 | $ 0.05 | $ 0.01 | $ 0.01 | $ 0.02 | $ (0.01) | $ (0.01) |  |  |  |
[1] | There is no difference between net income and comprehensive income.

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