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Share-based Compensation | 6 Months Ended
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Jun. 30, 2021
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 June 30, |  |  |  | Six Months Ended June 30,
| 2021 |  |  |  |  | 2020 |  |  |  | 2021 |  | 2020
Cost of revenues | $ | 234 |  |  |  |  |  | $ | 759 |  |  |  |  | $ | 1,812 |  |  | $ | 987 |
Research and development | 534 |  |  |  |  |  | 1,510 |  |  |  |  | 3,762 |  |  | 1,802 |
Sales and marketing | 559 |  |  |  |  |  | 816 |  |  |  |  | 2,547 |  |  | 1,279 |
General and administrative | 980 |  |  |  |  |  | 1,343 |  |  |  |  | 3,284 |  |  | 1,913 |
Total 1 | $ | 2,307 |  |  |  |  |  | $ | 4,428 |  |  |  |  | $ | 11,405 |  |  | $ | 5,981 |
1 During the quarter ended March 31, 2021, the Board of Directors of the Company approved and the Company granted restricted stock units to eligible employees under the 2018 Omnibus Incentive Compensation Plan, previously named the Amended and Restated 2009 Omnibus Incentive Compensation Plan (the “2018 Plan”) that were immediately vested, as fiscal 2020 annual bonus payments. The total charges recorded during the quarter ended March 31, 2021 were $7.0 million. Such bonus payments in fiscal 2020 were paid in the quarter ended June 30, 2020, and total charges related to such bonus payments recorded during the quarter ended June 30, 2020 were $2.7 million. Stock Options The following table summarizes the Company’s stock option activity:
Outstanding — December 31, 2020 | 8,479,979 |  |  |  |  |  |  |
Granted | 1,330,000 |  |  |  |  |  |  |
Exercised | (897,234) |  |  |  |  |  |  |
Canceled | (341,731) |  |  |  |  |  |  |
Outstanding — June 30, 2021 | 8,571,014 |  |  |  |  |  |  |
Exercisable — June 30, 2021 | 4,596,393 |  |  |  |  |  |  |
At June 30, 2021, total unrecognized compensation expense related to stock options was $14.1 million, which is expected to be recognized over a weighted-average period of 2.71 years. Restricted Stock Units The following table summarizes the Company’s restricted stock unit (“RSU”) activity:
Non-vested — December 31, 2020 | 417,105 |
Granted | 830,174 |
Vested | (793,227) |
Forfeited | (34,433) |
Non-vested — June 30, 2021 | 419,619 |
At June 30, 2021, total unrecognized compensation expense related to RSUs was $2.1 million, which is expected to be recognized over a weighted-average period of 2.60 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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