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Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2022
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Stock Options Activity | The following is a summary of stock option activity during the six months ended June 30, 2022:
|  | Options Outstanding |
|  | Number of Options |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Life (years) |  |  | Aggregate Intrinsic Value |
Balance—January 1, 2021 |  |  | 522,905 |  |  | $ | 9.25 |  |  |  | 6.77 |  |  | $ | 25,971 |
Options granted |  |  | — |  |  | $ | — |  |  |  | — |  |  | $ | — |
Options exercised |  |  | — |  |  | $ | — |  |  |  | — |  |  | $ | — |
Options cancelled |  |  | (154,309 | ) |  | $ | 9.24 |  |  |  | — |  |  | $ | — |
Balance—June 30, 2022 |  |  | 368,596 |  |  | $ | 9.26 |  |  |  | 6.31 |  |  | $ | — |
Exercisable as of June 30, 2022 |  |  | 368,457 |  |  | $ | 9.26 |  |  |  | 6.31 |  |  | $ | — |
Vested and expected to vest as of June 30, 2022 |  |  | 368,596 |  |  | $ | 9.26 |  |  |  | 6.31 |  |  | $ | — |
Summary of Restricted Stock Award Activity | A summary of restricted stock award activity within the Company’s equity plans and changes for the six months ended June 30, 2022 is as follows:
Restricted Stock Awards |  | Shares |  |  | Weighted Average Grant- Date Fair Value |
Nonvested at January 1, 2022 |  |  | 2,106,180 |  |  | $ | 14.94 |
Granted |  |  | 4,020,674 |  |  | $ | 3.24 |
Vested |  |  | (1,466,063 | ) |  | $ | 8.81 |
Forfeited |  |  | (201,596 | ) |  | $ | 15.89 |
Nonvested at June 30, 2022 |  |  | 4,459,195 |  |  | $ | 5.77 |
Summary of Total Stock-based Compensation Expense by Function | The following table summarizes the total stock-based compensation expense by function, including expense related to consultants, for the three and six months ended June 30, 2021 and 2022:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2021 |  |  | 2022 |  |  | 2021 |  |  | 2022 |
|  | (in thousands) |  |  | (in thousands) |
Sales and distribution expenses |  | $ | 1,569 |  |  | $ | 2,882 |  |  | $ | 2,524 |  |  | $ | 3,229 |
Research and development expenses |  |  | 1,221 |  |  |  | 633 |  |  |  | 2,104 |  |  |  | 907 |
General and administrative expenses |  |  | 2,072 |  |  |  | 2,533 |  |  |  | 7,132 |  |  |  | 4,777 |
Total stock-based compensation expense |  | $ | 4,862 |  |  | $ | 6,048 |  |  | $ | 11,760 |  |  | $ | 8,913 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 3: 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 https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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