v3.23.1

Note 5 - Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Fair Value, by Balance Sheet Grouping [Table Text Block] |
|  | Fair Value Measurements as of December 31, 2022 |
|  | Quoted Prices in Active Markets using Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |  |  | Total |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guaranteed Investment Certificates |  | $ | — |  |  | $ | 59 |  |  | $ | — |  |  | $ | 59 |
Total assets |  | $ | — |  |  | $ | 59 |  |  | $ | — |  |  | $ | 59 |
|  | Fair Value Measurements as of December 31, 2021 |
|  | Quoted Prices in Active Markets using Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |  |  | Total |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guaranteed Investment Certificates |  | $ | — |  |  | $ | 64 |  |  | $ | — |  |  | $ | 64 |
Total assets |  | $ | — |  |  | $ | 64 |  |  | $ | — |  |  | $ | 64 |

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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