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Stock-Based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Activity for Stock Option Plans | A summary of activity for the Company’s stock option plans for the three months ended March 31, 2020 is as follows:
|  | Number Outstanding |  |  | Average Exercise Price per Share |  |  | Weighted Average Remaining Contractual Term (Years) |  |  | Average Intrinsic Value |
Balance as of December 31, 2019 |  |  | 562,102 |  |  | $ | 5.60 |  |  |  | 5.86 |  |  | $ | 572,869 |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Cancelled or Expired |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Balance as of March 31, 2020 |  |  | 562,102 |  |  | $ | 5.60 |  |  |  | 5.56 |  |  | $ | — |
Vested or expected to vest as of March 31, 2020 |  |  | 562,102 |  |  | $ | 5.60 |  |  |  | 5.56 |  |  | $ | — |
Exercisable as of March 31, 2020 |  |  | 562,102 |  |  | $ | 5.60 |  |  |  | 5.56 |  |  | $ | — |
Summary Information about Options Outstanding | The following table summarizes information about options outstanding as of March 31, 2020:
|  | Options Outstanding |  |  | Options Exercisable |
Range of Exercise Prices |  | Number Outstanding |  |  | Weighted Average Remaining Contractual Life (Years) |  |  | Weighted Average Exercise Price |  |  | Number Exercisable |  |  | Weighted Average Exercise Price |
$4.36 - $7.20 |  |  | 465,310 |  |  |  | 6.02 |  |  | $ | 4.45 |  |  |  | 465,310 |  |  | $ | 4.45 |
$7.50 - $11.30 |  |  | 75,198 |  |  |  | 3.74 |  |  |  | 9.89 |  |  |  | 75,198 |  |  |  | 9.89 |
$12.00 - $19.70 |  |  | 17,244 |  |  |  | 2.06 |  |  |  | 13.60 |  |  |  | 17,244 |  |  |  | 13.60 |
$21.70 - $24.20 |  |  | 4,350 |  |  |  | 1.43 |  |  |  | 23.27 |  |  |  | 4,350 |  |  |  | 23.27 |
$4.36 - $24.20 |  |  | 562,102 |  |  |  | 5.68 |  |  |  | 5.60 |  |  |  | 562,102 |  |  |  |  |
Summary of RSU Activity | The following is a summary of RSU activity for the three months ended March 31, 2020:
|  | Number of RSUs |  |  | Weighted Average Fair Value |
Unvested as of December 31, 2019 |  |  | 1,148,110 |  |  | $ | 4.43 |
Granted |  |  | 136,396 |  |  |  | 2.73 |
Vested |  |  | (177,101 | ) |  |  | 4.02 |
Forfeited |  |  | (64,439 | ) |  |  | 4.65 |
Unvested as of March 31, 2020 |  |  | 1,042,966 |  |  | $ | 4.26 |
Shares vested but not released |  |  | 230,334 |  |  | $ | 5.16 |
Stock-Based Compensation Expense Related to Stock Options and RSUs | The following table illustrates all employee stock-based compensation expense related to stock options and RSUs included in the condensed consolidated statements of operations for the three months ended March 31, 2020 and 2019 (in thousands):
|  | Three Months Ended |
|  | March 31, |
|  | 2020 |  |  | 2019 |
Cost of revenue |  | $ | 40 |  |  | $ | 29 |
Research and development |  |  | 174 |  |  |  | 114 |
Selling and marketing |  |  | 126 |  |  |  | 180 |
General and administrative |  |  | 300 |  |  |  | 364 |
Total |  | $ | 640 |  |  | $ | 687 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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