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Note 7 - Stockholders' Equity and Stock-based Compensation - Schedule of Stock Options by Exercise Price (Details) | 12 Months Ended
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Dec. 31, 2024 $ / shares shares
Options outstanding (in shares) | shares | 4,463,028
Options outstanding, weighted average contractual life (Year) | 7 years 7 months 6 days
Options outstanding, weighted average exercise price (in dollars per share) | $ 20.15
Options exercisable (in shares) | shares | 1,794,501
Options exercisable, weighted average exercise price (in dollars per share) | $ 12.86
Range One [Member] |
Options, exercise price, lower limit (in dollars per share) | 0.95
Options, exercise price, upper limit (in dollars per share) | $ 4.1
Options outstanding (in shares) | shares | 900,303
Options outstanding, weighted average contractual life (Year) | 3 years 6 months
Options outstanding, weighted average exercise price (in dollars per share) | $ 2.8
Options exercisable (in shares) | shares | 900,303
Options exercisable, weighted average exercise price (in dollars per share) | $ 2.8
Range Two [Member] |
Options, exercise price, lower limit (in dollars per share) | 5.46
Options, exercise price, upper limit (in dollars per share) | $ 17.54
Options outstanding (in shares) | shares | 1,049,656
Options outstanding, weighted average contractual life (Year) | 7 years 1 month 6 days
Options outstanding, weighted average exercise price (in dollars per share) | $ 16.21
Options exercisable (in shares) | shares | 560,765
Options exercisable, weighted average exercise price (in dollars per share) | $ 15.06
Range Three [Member] |
Options, exercise price, lower limit (in dollars per share) | 18.78
Options, exercise price, upper limit (in dollars per share) | $ 26.57
Options outstanding (in shares) | shares | 539,277
Options outstanding, weighted average contractual life (Year) | 8 years 8 months 12 days
Options outstanding, weighted average exercise price (in dollars per share) | $ 21.9
Options exercisable (in shares) | shares | 197,198
Options exercisable, weighted average exercise price (in dollars per share) | $ 21.81
Range Four [Member] |
Options, exercise price, lower limit (in dollars per share) | 26.91
Options, exercise price, upper limit (in dollars per share) | $ 26.91
Options outstanding (in shares) | shares | 1,080,000
Options outstanding, weighted average contractual life (Year) | 9 years 8 months 12 days
Options outstanding, weighted average exercise price (in dollars per share) | $ 26.91
Options exercisable (in shares) | shares | 364
Options exercisable, weighted average exercise price (in dollars per share) | $ 26.91
Range Five [Member] |
Options, exercise price, lower limit (in dollars per share) | 27.42
Options, exercise price, upper limit (in dollars per share) | $ 77
Options outstanding (in shares) | shares | 893,792
Options outstanding, weighted average contractual life (Year) | 9 years 2 months 12 days
Options outstanding, weighted average exercise price (in dollars per share) | $ 33.02
Options exercisable (in shares) | shares | 135,871
Options exercisable, weighted average exercise price (in dollars per share) | $ 57.4

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- 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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + 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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + 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 -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + 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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + 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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + 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 -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average remaining contractual term of outstanding 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 -Topic 718 -SubTopic 10 -Subparagraph (e)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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