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Share-based Compensation | 3 Months Ended
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Mar. 31, 2020
Share-based Payment Arrangement [Abstract] |
Share-based Compensation | Share-based Compensation The Company included the following amounts for share-based compensation awards in the unaudited condensed consolidated statements of operations (in thousands):
| Three Months Ended March 31,
| 2020 |  | 2019
Cost of revenues | $ | 228 |  |  | $ | 123 |
Research and development | 292 |  |  | 175 |
Sales and marketing | 463 |  |  | 214 |
General and administrative | 570 |  |  | 545 |
Total | $ | 1,553 |  |  | $ | 1,057 |
Stock Options The following table summarizes the Company’s stock option activity:
Outstanding — December 31, 2019 | 9,044,304 |
Granted | 939,750 |
Exercised | (30,079 | )
Canceled | (176,687 | )
Outstanding — March 31, 2020 | 9,777,288 |
Exercisable — March 31, 2020 | 3,984,801 |
At March 31, 2020, total unrecognized compensation expense related to stock options was $11.7 million, which is expected to be recognized over a weighted-average period of 2.87 years. Restricted Stock Units The following table summarizes the Company’s restricted stock unit (“RSU”) activity:
Non-vested — December 31, 2019 | 400,315 |
Granted | 46,156 |
Vested | (151,467 | )
Non-vested — March 31, 2020 | 295,004 |
At March 31, 2020, total unrecognized compensation expense related to RSUs was $0.7 million, which is expected to be recognized over a weighted-average period of 1.33 years.

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- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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