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Condensed Consolidated Statements of Changes in Stockholders' Equity - 9 months ended Sep. 30, 2016 - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Treasury Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income | Accumulated Deficit
--- | --- | --- | --- | --- | --- | ---
Balance at the beginning of the period at Dec. 31, 2015 | $ 45,320 | $ 1 | $ 0 | $ 125,369 | $ 0 | $ (80,050)
Balance at the beginning of the period (in shares) at Dec. 31, 2015 |  | 11,649 | 0 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Issuance of common stock under employee stock option and stock purchase plans | 386 |  |  | 386 |  |
Issuance of common stock under employee stock option and stock purchase plans (in shares) |  | 92 |  |  |  |
Repurchase of common stock | 0 |  | $ 309 | (309) |  |
Repurchase of common stock (in shares) |  | (51) | 51 |  |  |
Retirement of common stock | (309) |  | $ (309) |  |  |
Retirement of common stock (in shares) |  |  | (51) |  |  |
Stock-based compensation | 1,076 |  |  | 1,076 |  |
Foreign currency translation adjustments | 2 |  |  |  | 2 |
Net loss from continuing operations | (9,070) |  |  |  |  | (9,070)
Net loss from discontinued operations | (12) |  |  |  |  | (12)
Balance at the end of the period at Sep. 30, 2016 | $ 37,393 | $ 1 | $ 0 | $ 126,522 | $ 2 | $ (89,132)
Balance at the end of the period (in shares) at Sep. 30, 2016 |  | 11,690 | 0 |  |  |

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