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Note 3 - Discontinued Operations - Schedule of Disposal Groups (Details) - USD ($) $ in Thousands | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Loss on assets held for sale | $ 31,848 | $ 0 | $ 92,706 | $ 0 | $ 93,118 | $ 0 | $ 0
Loss from discontinued operations, net of tax |  |  |  |  | (80,221) | (140,531) | (6,596)
B Medical Systems Business [Member] | Discontinued Operations, Held-for-Sale [Member] |  |  |  |  |  |  |
Disposal group, revenue |  |  |  |  | 67,968 | 83,125 | 113,123
Disposal group, cost of revenue |  |  |  |  | 49,979 | 77,231 | 92,609
Gross profit |  |  |  |  | 17,989 | 5,894 | 20,514
Research and development |  |  |  |  | 5,785 | 4,704 | 4,046
Selling, general and administrative |  |  |  |  | 25,739 | 34,949 | 47,361
Impairment of goodwill and intangible assets |  |  |  |  | 0 | 111,317 | 0
Contingent consideration - fair value adjustments |  |  |  |  | 0 | 0 | (18,549)
Loss on assets held for sale |  |  |  |  | 93,118 | 0 | 0
Restructuring charges |  |  |  |  | 1,235 | 5,042 | 0
Total operating expenses |  |  |  |  | 125,877 | 156,012 | 32,858
Operating loss |  |  |  |  | (107,888) | (150,118) | (12,344)
Interest income (expense), net |  |  |  |  | 40 | 286 | 194
Other income (expense), net |  |  |  |  | (212) | 911 | 1,258
Loss before income taxes |  |  |  |  | (108,060) | (148,921) | (10,892)
Income tax benefit |  |  |  |  | (28,518) | (8,390) | (5,670)
Loss from discontinued operations, net of tax |  |  |  |  | (79,542) | (140,531) | (5,222)
B Medical Systems Business [Member] | Discontinued Operations, Held-for-Sale [Member] | Product [Member] |  |  |  |  |  |  |
Disposal group, revenue |  |  |  |  | 58,569 | 69,690 | 101,091
Disposal group, cost of revenue |  |  |  |  | 41,073 | 64,871 | 85,315
B Medical Systems Business [Member] | Discontinued Operations, Held-for-Sale [Member] | Service [Member] |  |  |  |  |  |  |
Disposal group, revenue |  |  |  |  | 9,399 | 13,435 | 12,032
Disposal group, cost of revenue |  |  |  |  | $ 8,906 | $ 12,360 | $ 7,294

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