XML 52 R37.htm IDEA: XBRL DOCUMENT
v3.21.2

Stock-Based Compensation (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2021
Stock-Based Compensation |
Schedule of stock option activity | Stock option activity under the 2018 Plan is as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted- | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Average | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted- | ​ | Remaining | ​ | Aggregate
​ | ​ | ​ | ​ | Average | ​ | Contractual | ​ | Intrinsic
​ | ​ | Number of | ​ | Exercise | ​ | Term | ​ | Value
​ |  | Options |  | Price |  | (years) |  | (in thousands)
Balance – December 31, 2020 |  | 2,594,597 | ​ | $ | 3.79 |  | 8.5 | ​ | $ | 13,791
Granted(1) |  | 965,944 | ​ |  | 10.52 |  | ​ | ​ |  | ​
Exercised | ​ | — | ​ | ​ | — | ​ | ​ | ​ | ​ | ​
Forfeited |  | — | ​ |  | — |  | ​ | ​ |  | ​
Cancelled |  | — | ​ |  | — |  | ​ | ​ |  | ​
Balance – June 30, 2021 |  | 3,560,541 | ​ | $ | 5.61 |  | 8.2 | ​ | $ | 118,483
Exercisable – June 30, 2021 |  | 2,594,597 | ​ | $ | 3.79 |  | 7.6 | ​ | $ | 91,080
Vested and expected to vest – June 30, 2021 | ​ | 3,560,541 | ​ | $ | 5.61 | ​ | 8.2 | ​ | $ | 118,483
(1) | The options granted during the period were not included in the number of options for which vesting was accelerated as part of the Business Combination.
Schedule of restricted stock unit activity | Restricted stock unit activity under the 2018 Plan is as follows:
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted-
​ | ​ | ​ | ​ | Average
​ | ​ | ​ | ​ | Grant Date
​ | ​ | Number of | ​ | Fair Value
​ |  | Awards |  | per Share
Unvested and outstanding balance at December 31, 2020 |  | 313,976 | ​ | $ | 4.30
Granted |  | — | ​ |  | —
Vested |  | (313,976) | ​ |  | 4.30
Forfeited |  | — | ​ |  | —
Unvested and outstanding balance at June 30, 2021 |  | — | ​ | $ | —
Schedule of assumptions used to determine fair value of options granted | We estimated the fair value of each option on the date of grant using the Black-Scholes option pricing model applying the weighted-average assumptions in the following table. There were no options granted during the three months ended June 30, 2021 and 2020. ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six Months Ended June 30,
​ |  | 2021 |  | 2020
Fair value of common stock | ​ | $ | 10.52 | ​ | $ | 3.94 – $4.17
Expected term, in years | ​ |  | 5.86 | ​ |  | 5.88 – 6.06
Expected volatility | ​ |  | 47% | ​ |  | 40%
Risk-free interest rate | ​ |  | 0.57% | ​ |  | 1.45% – 1.46%
Expected dividend yield | ​ |  | 0% | ​ |  | 0%
​
Schedule of allocated share-based compensation expense | Stock-based compensation expense under our equity incentive plans was as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ |  | 2021 |  | 2020 |  | 2021 | ​ | 2020
Cost of sales | ​ | $ | — | ​ | $ | 5 | ​ | $ | — | ​ | $ | 10
Selling and administrative expenses | ​ |  | 361 | ​ |  | 1,340 | ​ | ​ | 3,859 | ​ | ​ | 2,084
Total | ​ | $ | 361 | ​ | $ | 1,345 | ​ | $ | 3,859 | ​ | $ | 2,094

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 of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + 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 + Details
Name: | us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
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: | nonnum: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: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration