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Note 5 - Amounts Receivable | 12 Months Ended
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Dec. 31, 2025
Notes to Financial Statements |
Loans, Notes, Trade and Other Receivables Disclosure [Text Block] | 5. Amounts Receivable Amounts receivable consisted of the following (in thousands):
|  | December 31, 2025 |  |  | December 31, 2024 |
Accrued interest receivable on marketable securities |  | $ | 250 |  |  | $ | 235 |
Other |  |  | 8 |  |  |  | 1 |
Total amounts receivable |  | $ | 258 |  |  | $ | 236 |

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- Definition The entire disclosure for claims held for amounts due to entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/310-10/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 + Details
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