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Note 3 - Discontinued Operations (Tables) | 9 Months Ended
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Jun. 30, 2025
Notes Tables |
Disposal Groups, Including Discontinued Operations [Table Text Block] |
|  | Three Months Ended June 30, |  |  | Nine Months Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products |  | $ | 14,333 |  |  | $ | 24,735 |  |  | $ | 44,507 |  |  | $ | 54,666 |
Services |  |  | 1,969 |  |  |  | 3,782 |  |  |  | 6,592 |  |  |  | 9,222 |
Total revenue |  |  | 16,302 |  |  |  | 28,517 |  |  |  | 51,099 |  |  |  | 63,888 |
Cost of revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products |  |  | 9,793 |  |  |  | 21,249 |  |  |  | 31,333 |  |  |  | 48,947 |
Services |  |  | 1,600 |  |  |  | 3,690 |  |  |  | 6,321 |  |  |  | 8,873 |
Total cost of revenue |  |  | 11,393 |  |  |  | 24,939 |  |  |  | 37,654 |  |  |  | 57,820 |
Gross profit |  |  | 4,909 |  |  |  | 3,578 |  |  |  | 13,445 |  |  |  | 6,068 |
Operating expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Research and development |  |  | 1,533 |  |  |  | 1,002 |  |  |  | 4,369 |  |  |  | 3,155 |
Selling, general and administrative |  |  | 6,939 |  |  |  | 9,861 |  |  |  | 20,855 |  |  |  | 27,804 |
Impairment of goodwill and intangible assets |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 111,317 |
Loss on assets held for sale |  |  | 68,838 |  |  |  | - |  |  |  | 93,025 |  |  |  | - |
Restructuring charges |  |  | 373 |  |  |  | 362 |  |  |  | 1,051 |  |  |  | 4,613 |
Total operating expenses |  |  | 77,683 |  |  |  | 11,225 |  |  |  | 119,300 |  |  |  | 146,889 |
Operating loss |  |  | (72,774 | ) |  |  | (7,647 | ) |  |  | (105,855 | ) |  |  | (140,821 | )
Interest income (expense), net |  |  | (10 | ) |  |  | 79 |  |  |  | (20 | ) |  |  | 291 |
Other income (expense), net |  |  | (92 | ) |  |  | 94 |  |  |  | (166 | ) |  |  | 776 |
Loss before income taxes |  |  | (72,876 | ) |  |  | (7,474 | ) |  |  | (106,041 | ) |  |  | (139,754 | )
Income tax benefit |  |  | (19,689 | ) |  |  | (1,050 | ) |  |  | (27,044 | ) |  |  | (4,120 | )
Loss from discontinued operations, net of tax |  | $ | (53,187 | ) |  | $ | (6,424 | ) |  | $ | (78,997 | ) |  | $ | (135,634 | )
Disposal Groups, Including Discontinued Operations, Statement of Cash Flows [Table Text Block] |
|  | Three Months Ended June 30, |  |  | Nine Months Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Depreciation and amortization |  | $ | - |  |  | $ | 7,907 |  |  | $ | 3,846 |  |  | $ | 22,859 |
Capital expenditures |  |  | 1,472 |  |  |  | 581 |  |  |  | 2,600 |  |  |  | 2,578 |
Impairment of goodwill |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 111,317 |
Loss on assets held for sale |  |  | 68,838 |  |  |  | - |  |  |  | 93,025 |  |  |  | - |
Schedule of Disposal Groups, Including Discontinued Operations, Balance Sheet [Table Text Block] |
|  | June 30, 2025 |  |  | September 30, 2024 |
Assets |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 15,000 |  |  | $ | 30,899 |
Accounts receivable, net |  |  | 9,566 |  |  |  | 16,438 |
Inventories |  |  | 45,720 |  |  |  | 36,333 |
Prepaid expenses and other current assets |  |  | 6,740 |  |  |  | 5,224 |
Current assets held for sale |  | $ | 77,025 |  |  | $ | 88,894 |
Property, plant and equipment, net |  | $ | 50,490 |  |  | $ | 47,032 |
Intangibles, net |  |  | 126,130 |  |  |  | 122,988 |
Other assets |  |  | 5,351 |  |  |  | 3,774 |
Valuation allowance |  |  | (96,492 | ) |  |  | - |
Noncurrent assets held for sale |  | $ | 85,479 |  |  | $ | 173,794 |
Liabilities |  |  |  |  |  |  |  |
Accounts payable |  | $ | 8,587 |  |  | $ | 11,089 |
Deferred revenue |  |  | 1,639 |  |  |  | 1,485 |
Accrued warranty and retrofit costs |  |  | 5,131 |  |  |  | 4,916 |
Accrued compensation and benefits |  |  | 3,896 |  |  |  | 2,929 |
Accrued income taxes |  |  | 760 |  |  |  | 4,012 |
Accrued expenses and other current liabilities |  |  | 11,702 |  |  |  | 5,619 |
Current liabilities held for sale |  | $ | 31,715 |  |  | $ | 30,050 |
Long-term deferred tax liabilities |  |  | 11,278 |  |  |  | 36,093 |
Long-term operating lease liabilities |  |  | 2,852 |  |  |  | 2,109 |
Other long-term liabilities |  |  | 2,961 |  |  |  | 3,994 |
Noncurrent liabilities held for sale |  | $ | 17,091 |  |  | $ | 42,196 |

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