XML 42 R27.htm IDEA: XBRL DOCUMENT
v3.21.2

Stock-Based Compensation (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of Stock Option Activity | The following table summarizes the stock option activity under the 2013 Plan and 2021 Plan (in thousands except for per share amounts and years):
| Number of shares |  | Weighted- average exercise price per share |  | Weighted- average remaining contractual life (years) |  | Aggregate intrinsic value
Options outstanding as of December 31, 2020 | 3,305 |  |  | $ | 3.86 |  |  | 7.21 |  | 22,952 |
Granted | 537 |  |  | 18.70 |  |  |  |  |
Exercised | (641) |  |  | 2.50 |  |  |  |  |
Forfeited and cancelled | (232) |  |  | 7.04 |  |  |  |  |
Options outstanding as of September 30, 2021 | 2,969 |  |  | $ | 6.59 |  |  | 6.94 |  | 122,763 |
Options vested and exercisable at September 30, 2021 | 1,886 |  |  | $ | 3.08 |  |  | 5.97 |  | 84,618 |
Schedule of Black-Scholes Assumptions | The Black-Scholes assumptions used to value the employee options during the nine months ended September 30, 2021 are as follows:
Stock options: |  |  |  |  |  |
Risk-free interest rate |  |  |  |  | 0.8% |
Weighted-average expected term of the options |  |  |  |  | 6.25 years |
Expected dividend rate |  |  |  |  | — % |
Expected volatility |  |  |  |  | 53.8% |
Fair value of common stock |  |  |  |  | $18.70 |

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration