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Stock Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Schedule Of Stock Based Compensation Expenses | Stock-based compensation is recorded in the consolidated statements of operations as follows (in thousands):
|  | Three months ended June 30, |  |  | Six months ended June 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Cost of goods sold |  | $ | 1 |  |  | $ | — |  |  | $ | 2 |  |  | $ | — |
Research and development |  |  | 176 |  |  |  | 149 |  |  |  | 380 |  |  |  | 301 |
Sales and marketing |  |  | 213 |  |  |  | 100 |  |  |  | 428 |  |  |  | 190 |
General and administrative |  |  | 618 |  |  |  | 405 |  |  |  | 1,126 |  |  |  | 831 |
Total stock-based compensation expense |  | $ | 1,008 |  |  | $ | 654 |  |  | $ | 1,936 |  |  | $ | 1,322 |
Summary of Outstanding Stock Option Activity | The following table summarizes the outstanding stock option activity during the period indicated (shares in thousands):
|  |  |  |  | Weighted average |
|  | Number of stock options |  |  | Exercise price |  |  | Remaining contractual term (in years) |
Balance at December 31, 2020 |  |  | 1,760 |  |  | $ | 10.07 |  |  |  | 7.6 |
Granted |  |  | 456 |  |  |  | 23.20 |  |  |  |
Exercised |  |  | (218 | ) |  |  | 11.14 |  |  |  |
Expired/Forfeited |  |  | (79 | ) |  |  | 13.83 |  |  |  |
Balance at June 30, 2021 |  |  | 1,919 |  |  |  | 12.91 |  |  |  | 7.7 |
Vested and exercisable at June 30, 2021 |  |  | 1,022 |  |  |  | 9.37 |  |  |  | 6.7 |
Vested and expected to vest at June 30, 2021 |  |  | 1,919 |  |  |  | 12.91 |  |  |  | 7.7 |
Summary of Outstanding Restricted Stock Unit Activity | The following table summarizes the Company's restricted stock unit activity during the period indicated (shares in thousands):
|  | Restricted stock units |  |  | Weighted average grant date fair value |
Balance at December 31, 2020 |  |  | 202 |  |  | $ | 10.51 |
Grants |  |  | 170 |  |  |  | 23.97 |
Vested and released |  |  | (61 | ) |  |  | 10.43 |
Forfeited |  |  | (54 | ) |  |  | 13.51 |
Balance at June 30, 2021 |  |  | 257 |  |  |  | 18.81 |

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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=120381028&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=120381028&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=120381028&loc=d3e5070-113901 + Details
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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 http://asc.fasb.org/extlink&oid=120381028&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 http://asc.fasb.org/extlink&oid=120381028&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 http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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