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Condensed Consolidated Financial Statements Detail - Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income (Loss) per Share Available to Common Stockholders (Details) - USD ($) shares in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Numerator |  |  |  |
Net loss | $ (1,947,000) | $ 285,000 | $ (5,753,000) | $ (10,429,000)
Less: Deemed dividend on convertible preferred stock |  |  |  | (5,603,000)
Less: Allocation of undistributed earnings to participating securities |  | (113,000) | 0 | 0
Net (loss) income available to common stockholders, basic and diluted | $ (1,947,000) | $ 172,000 | $ (5,753,000) | $ (16,032,000)
Denominator |  |  |  |
Weighted average shares used in computing basic net (loss) income per share available to common stockholders | 8,362 | 7,588 | 8,338 | 7,240
Effect of dilutive stock options |  | 55 |  |
Weighted average shares used in computing diluted net (loss) income per share available to common stockholders | 8,362 | 7,643 | 8,338 | 7,240

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