Note 11 - Stockholders' Equity - Stock-based Compensation Plan Activity (Details) - shares |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2024 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Sep. 30, 2024 |
|
| Share-Based Payment Arrangement [Member] | ||||
| Number of shares available for grant (in shares) | 71,023 | 71,023 | ||
| Granted, available for grant (in shares) | (57,126) | |||
| Forfeited, available for grant (in shares) | 61,081 | |||
| Returned to Plan, available for grant (in shares) | 52,251 | |||
| Addition, available for grant (in shares) | 475,000 | |||
| Expiration, available for grant (in shares) | (31,486) | |||
| Number of shares available for grant (in shares) | 570,743 | 570,743 | ||
| Restricted Stock Units (RSUs) [Member] | ||||
| Balances, RSUs (in shares) | 432,725 | 432,725 | ||
| Granted (in shares) | 20,111 | 6,250 | 5,576 | 57,126 |
| Exercised/ Released (in shares) | (169,075) | |||
| Forfeited (in shares) | (61,081) | |||
| Returned to Plan, RSUs (in shares) | 0 | |||
| Additions to Plan, RSUs (in shares) | 0 | |||
| Expiration of 2014 Plan (in shares) | 0 | |||
| Balances, RSUs (in shares) | 259,695 | 259,695 | ||
| X | ||||||||||
- Definition The number of equity instruments other than options added to plan under share based payment arrangement. No definition available.
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| X | ||||||||||
- Definition The number of equity instruments other than options returned to plan under share based payment arrangement. No definition available.
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| X | ||||||||||
- Definition Number of shares forfeited under share-based payment arrangement. No definition available.
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| X | ||||||||||
- Definition The number of shares returned to plan under share-based payment award. No definition available.
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| X | ||||||||||
- Definition Represents the number of shares added to plan under share-based payment award. No definition available.
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| X | ||||||||||
- Definition Represents the number of shares expired under share-based payment award. No definition available.
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| X | ||||||||||
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of non-option equity instruments exercised by participants. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares under non-option equity instrument agreements for which rights to exercise lapsed. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares issued under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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