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v3.19.3.a.u2

Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Treasury Stock | Accumulated Other Comprehensive Income (Loss) | Accumulated Deficit
--- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2016 | $ 45,033 | $ 1 | $ 88,583 |  |  | $ (43,551)
Reversal of secondary offering cost |  |  | 1 |  |  |
Stock-based compensation |  |  | 736 |  |  |
Issuance of shares for stock purchase plans |  |  | 588 |  |  |
Repurchases of common stock |  |  |  | $ (1,257) |  |
Unrealized gain (loss) on available-for-sale securities, net of deferred taxes | (17) |  |  |  | $ (17) |
Net income (loss) | 1,141 |  |  |  |  | 1,141
Ending balance at Dec. 31, 2017 | 46,225 | 1 | 89,908 | (1,257) | (17) | (42,410)
Stock-based compensation |  |  | 2,910 |  |  |
Issuance of shares for stock purchase plans |  |  | 765 |  |  |
Repurchases of common stock |  |  |  | (2,175) |  |
Unrealized gain (loss) on available-for-sale securities, net of deferred taxes | 6 |  |  |  | 6 |
Net income (loss) | (2,584) |  |  |  |  | (2,584)
Ending balance at Dec. 31, 2018 | 45,147 | 1 | 93,583 | (3,432) | (11) | (44,994)
Stock-based compensation |  |  | 2,204 |  |  |
Issuance of shares for stock purchase plans |  |  | 835 |  |  |
Repurchases of common stock |  |  |  | (1,227) |  |
Unrealized gain (loss) on available-for-sale securities, net of deferred taxes | 19 |  |  |  | 19 |
Net income (loss) | 926 |  |  |  |  | 926
Ending balance at Dec. 31, 2019 | $ 47,904 | $ 1 | $ 96,622 | $ (4,659) | $ 8 | $ (44,068)

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