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Note 2 - Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2024
Notes Tables |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | June 30, |  |  | June 30, |
|  | 2024 |  |  | 2023 |
Balance as of beginning of period |  | $ | 701 |  |  | $ | 984 |
Amounts accrued |  |  | 130 |  |  |  | 309 |
Write-offs charged against the allowance |  |  | - |  |  |  | (179 | )
Balance as of end of period |  | $ | 831 |  |  | $ | 1,114 |
Schedule of Inventory, Current [Table Text Block] |
|  | June 30, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
Raw materials |  | $ | 2,372 |  |  | $ | 2,063 |
Work-in-process |  |  | 623 |  |  |  | 504 |
Total inventories |  | $ | 2,995 |  |  | $ | 2,567 |

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