Note 6 - Variable Interest Entities - VIEs (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
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|---|---|---|---|---|---|---|---|---|---|---|
| Cash and cash equivalents | $ 46,646 | $ 41,514 | ||||||||
| Accounts receivable, net of reserves of $52 and $52, respectively | 284 | 572 | ||||||||
| Total current assets | 47,516 | 46,324 | ||||||||
| Total assets | 48,123 | 46,776 | ||||||||
| Total liabilities | 1,494 | 1,211 | ||||||||
| Variable Interest Entity, Not Primary Beneficiary [Member] | ||||||||||
| Total assets | 618 | 615 | ||||||||
| On-balance sheet (a) | [1],[2],[3] | 4 | 4 | |||||||
| Off-balance sheet (b) | [4] | 0 | 0 | |||||||
| Total | 4 | 4 | ||||||||
| Variable Interest Entity, Primary Beneficiary [Member] | ||||||||||
| Cash and cash equivalents | 3,196 | 3,169 | ||||||||
| Accounts receivable, net of reserves of $52 and $52, respectively | 17 | 17 | ||||||||
| Total current assets | 3,213 | 3,186 | ||||||||
| Total assets | 3,213 | 3,186 | ||||||||
| Total liabilities | $ 0 | $ 0 | ||||||||
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| X | ||||||||||
- Definition The reporting entity's maximum amount of exposure to loss off balance sheet as a result of its involvement with the Variable Interest Entity (VIE). No definition available.
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| X | ||||||||||
- Definition The reporting entity's maximum amount of exposure to loss on balance sheet as a result of its involvement with the Variable Interest Entity (VIE). No definition available.
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| X | ||||||||||
- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of asset recognized for present right to economic benefit, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). 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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