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v3.23.2

Note 2 - Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2023
Notes Tables |
Schedule of Cash and Cash Equivalents [Table Text Block] |
|  | June 30, |  |  | June 30, |
|  | 2023 |  |  | 2022 |
Cash |  | $ | 12,354 |  |  | $ | 23,298 |
Cash equivalents |  |  | 2,780 |  |  |  | 8,010 |
Restricted cash and cash equivalents included in current assets |  |  | — |  |  |  | 1,990 |
Total cash, cash equivalents, and restricted cash and cash equivalents shown in the Condensed Consolidated Statements of Cash Flows |  | $ | 15,134 |  |  | $ | 33,298 |
Debt Securities, Held-to-Maturity [Table Text Block] |
|  | As of |
Held-to-maturity debt securities: |  | June 30, 2023 |  |  | December 31, 2022 |
Amortized cost |  | $ | 17,729 |  |  | $ | 9,341 |
Gross unrecognized gains |  |  | — |  |  |  | — |
Gross unrecognized losses |  |  | (225 | ) |  |  | (168 | )
Fair value |  | $ | 17,504 |  |  | $ | 9,173 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Amortized Cost |  |  | Fair Value |
Within one year |  | $ | 12,855 |  |  | $ | 12,751 |
After one year through two years |  |  | 4,408 |  |  |  | 4,300 |
After two years through three years |  |  | 466 |  |  |  | 453 |
Total |  | $ | 17,729 |  |  | $ | 17,504 |
Financing Receivable, Allowance for Credit Loss [Table Text Block] |
At January 1, 2022 |  | $ | 223 |
Provision charged to expense |  |  | (19 | )
(Write-offs) / Recoveries |  |  | (94 | )
At December 31, 2022 |  | $ | 110 |
Provision charged to expense |  |  | — |
(Write-offs) / Recoveries |  |  | — |
At June 30, 2023 |  | $ | 110 |

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