v3.23.1

Note 16 - Stockholders Equity - Stock Options Outstanding and Exercisable (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Options outstanding, number (in shares) | 12,741,394 |
Options outstanding, weighted average remaining contractual term (Year) | 8 years 2 months 23 days |
Options outstanding, weighted average exercise price (in dollars per share) | $ 1.67 |
Options exercisable (in shares) |  | 3,376,223
Options exercisable, weighted average remaining contractual term (Year) |  | 5 years 4 months 28 days
Options exercisable, weighted average exercise price (in dollars per share) |  | $ 3.78
Range One [Member] |  |
Exercise price range, lower limit (in dollars per share) | 0.21 |
Exercise price range, upper limit (in dollars per share) | $ 3.64 |
Options outstanding, number (in shares) | 11,915,903 |
Options outstanding, weighted average remaining contractual term (Year) | 8 years 5 months 19 days |
Options outstanding, weighted average exercise price (in dollars per share) | $ 1.26 |
Options exercisable (in shares) |  | 2,586,015
Options exercisable, weighted average remaining contractual term (Year) |  | 5 years 7 months 20 days
Options exercisable, weighted average exercise price (in dollars per share) |  | $ 2.58
Range Two [Member] |  |
Exercise price range, lower limit (in dollars per share) | 4.26 |
Exercise price range, upper limit (in dollars per share) | $ 7.95 |
Options outstanding, number (in shares) | 783,523 |
Options outstanding, weighted average remaining contractual term (Year) | 4 years 8 months 15 days |
Options outstanding, weighted average exercise price (in dollars per share) | $ 6.68 |
Options exercisable (in shares) |  | 748,243
Options exercisable, weighted average remaining contractual term (Year) |  | 4 years 7 months 13 days
Options exercisable, weighted average exercise price (in dollars per share) |  | $ 6.70
Range Three [Member] |  |
Exercise price range, lower limit (in dollars per share) | 12.45 |
Exercise price range, upper limit (in dollars per share) | $ 25.50 |
Options outstanding, number (in shares) | 24,277 |
Options outstanding, weighted average remaining contractual term (Year) | 5 years 9 months |
Options outstanding, weighted average exercise price (in dollars per share) | $ 18.06 |
Options exercisable (in shares) |  | 24,274
Options exercisable, weighted average remaining contractual term (Year) |  | 5 years 9 months
Options exercisable, weighted average exercise price (in dollars per share) |  | $ 18.06
Range Four [Member] |  |
Exercise price range, lower limit (in dollars per share) | 27.00 |
Exercise price range, upper limit (in dollars per share) | $ 29.25 |
Options outstanding, number (in shares) | 9,752 |
Options outstanding, weighted average remaining contractual term (Year) | 2 years 3 months 18 days |
Options outstanding, weighted average exercise price (in dollars per share) | $ 27.01 |
Options exercisable (in shares) |  | 9,752
Options exercisable, weighted average remaining contractual term (Year) |  | 2 years 3 months 18 days
Options exercisable, weighted average exercise price (in dollars per share) |  | $ 27.01
Range Five [Member] |  |
Exercise price range, lower limit (in dollars per share) | 36.00 |
Exercise price range, upper limit (in dollars per share) | $ 63.90 |
Options outstanding, number (in shares) | 7,939 |
Options outstanding, weighted average remaining contractual term (Year) | 4 years 10 months 24 days |
Options outstanding, weighted average exercise price (in dollars per share) | $ 45.65 |
Options exercisable (in shares) |  | 7,939
Options exercisable, weighted average remaining contractual term (Year) |  | 4 years 10 months 24 days
Options exercisable, weighted average exercise price (in dollars per share) |  | $ 45.65

X
- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + 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)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + 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)(i)-(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + 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)(i)-(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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