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Note 7 - Supplemental Balance Sheet Information (Tables) | 12 Months Ended
--- | ---
Mar. 31, 2025
Notes Tables |
Schedule of Inventory, Current [Table Text Block] |
|  | March 31, 2025 |  |  | March 31, 2024 |
Raw materials |  | $ | 14,775 |  |  | $ | 18,335 |
Work in process |  |  | 560 |  |  |  | 1,256 |
Finished goods |  |  | 10,030 |  |  |  | 13,084 |
Total inventories |  | $ | 25,365 |  |  | $ | 32,675 |
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] |
|  | March 31, 2025 |  |  | March 31, 2024 |
Prepaid expenses |  | $ | 2,364 |  |  | $ | 2,932 |
Deposits |  |  | 1,752 |  |  |  | 1,898 |
Prepaid income taxes |  |  | 1,040 |  |  |  | 1,237 |
Other current assets |  |  | 2,873 |  |  |  | 3,341 |
Total prepaid expenses and other |  | $ | 8,029 |  |  | $ | 9,408 |
Property, Plant and Equipment [Table Text Block] |
|  | March 31, 2025 |  |  | March 31, 2024 |
Land |  | $ | 889 |  |  | $ | 889 |
Buildings and building improvements |  |  | 23,280 |  |  |  | 23,480 |
Manufacturing equipment |  |  | 22,694 |  |  |  | 19,540 |
Computer equipment |  |  | 3,093 |  |  |  | 3,613 |
Other |  |  | 7,188 |  |  |  | 5,383 |
Construction in progress |  |  | 1,610 |  |  |  | 1,380 |
Gross total |  |  | 58,754 |  |  |  | 54,285 |
Accumulated depreciation |  |  | (26,421 | ) |  |  | (22,519 | )
Total property, plant and equipment, net |  | $ | 32,333 |  |  | $ | 31,766 |
|  | Year Ended March 31, |
|  | 2025 |  |  | 2024 |  |  | 2023 |
Depreciation expense in cost of revenues |  | $ | 3,160 |  |  | $ | 3,031 |  |  | $ | 3,163 |
Depreciation expense in operating expense |  |  | 2,222 |  |  |  | 1,202 |  |  |  | 1,150 |
Total depreciation expense |  | $ | 5,382 |  |  | $ | 4,233 |  |  | $ | 4,313 |
Schedule of Employee Related Liabilities [Table Text Block] |
|  | March 31, 2025 |  |  | March 31, 2024 |
Bonus payable |  | $ | 10,891 |  |  | $ | 3,838 |
Wages and paid-time-off payable |  |  | 3,672 |  |  |  | 3,072 |
Payroll related taxes |  |  | 2,475 |  |  |  | 1,956 |
Other benefits payable |  |  | 820 |  |  |  | 1,069 |
Total accrued payroll and benefits |  | $ | 17,858 |  |  | $ | 9,935 |
Schedule of Accrued Liabilities [Table Text Block] |
|  | March 31, 2025 |  |  | March 31, 2024 |
GKE acquisition holdback (current) |  | $ | 9,315 |  |  | $ | - |
Accrued business taxes |  |  | 5,996 |  |  |  | 5,557 |
Current operating lease liabilities |  |  | 3,523 |  |  |  | 2,986 |
Income taxes payable |  |  | 2,157 |  |  |  | 1,615 |
Other |  |  | 3,610 |  |  |  | 2,700 |
Total other accrued expenses |  | $ | 24,601 |  |  | $ | 12,858 |

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