XML 36 R25.htm IDEA: XBRL DOCUMENT
v3.21.1

7. Stock-Based Compensation (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract] |
Schedule of options granted under employee stock plans |
|  | Shares Available for Grant |  |  | Number of Shares Outstanding |  |  | Weighted-Average Exercise Price |
Balance as of December 31, 2020 |  |  | 380 |  |  |  | 5,327 |  |  | $ | 1.14 |
Authorized |  |  | 816 |  |  |  | - |  |  |  | - |
Granted |  |  | (950 | ) |  |  | 950 |  |  |  | 3.09 |
Exercised |  |  | - |  |  |  | (1,211 | ) |  |  | 1.49 |
Forfeited/expired |  |  | 61 |  |  |  | (61 | ) |  |  | 1.91 |
Balance as of March 31, 2021 |  |  | 307 |  |  |  | 5,005 |  |  | $ | 1.41 |
Schedule of weighted average fair value calculations for options |
|  | For the three months ended March 31, |
Description |  | 2021 |  |  | 2020 |
Dividend-yield |  |  | 0 | % |  |  | 0 | %
Risk-free interest rate |  |  | 0.70 | % |  |  | 1.08 | %
Expected volatility |  |  | 97.45 | % |  |  | 87.43 | %
Expected life (years) |  |  | 6.51 |  |  |  | 6.93 |
Market value per share on grant date |  | $ | 3.09 |  |  | $ | 0.71 |
Fair value per share on grant date |  | $ | 2.44 |  |  | $ | 0.54 |

X
- Definition Tabular disclosure of share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock
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

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