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v3.25.3

Note 3 - Business Combination (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 3 Months Ended | 5 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 15, 2024 | Jul. 31, 2025 | Dec. 31, 2024 | Jun. 30, 2024 | Sep. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Mar. 31, 2025 | Apr. 17, 2024
Common Stock, No Par Value (in dollars per share) |  |  |  |  |  | $ 0 |  |  |  |  | $ 0 | $ 0
Amortization of Intangible Assets |  |  |  |  | $ 145 |  | $ 178 |  | $ 272 | $ 208 |  |
Depreciation |  |  |  |  | $ 719 |  | 306 |  | $ 1,200 | $ 367 |  |
Amplex Holdings [Member] |  |  |  |  |  |  |  |  |  |  |  |
Investment, Shares Acquired During the Period (in shares) | 1,674 | 4,120 | 2,583 | 1,674 |  |  |  |  |  |  |  |
Investment, Shares Acquired, Price Per Share (in dollars per share) | $ 1,792.55 | $ 1,092.26 | $ 1,742.16 | $ 1,792.55 |  |  |  |  |  |  |  |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests | $ 3,000 | $ 4,500 | $ 4,500 | $ 3,000 |  |  |  |  |  |  |  |
Subsidiary, Ownership Percentage, Parent | 56.50% | 66.40% | 60.90% | 56.50% | 66.40% |  |  | 56.50% | 66.40% |  |  |
Conversion of Principal and Accrued Interest Into Amplex Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Conversion, Original Debt, Amount | $ 800 |  |  |  |  |  |  | $ 800 |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued (in shares) | 421 |  |  |  |  |  |  | 421 |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued, Price Per Share (in dollars per share) | $ 1,792.55 |  |  |  |  |  |  | $ 1,792.55 |  |  |  |
Amplex Holdings [Member] |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Voting Equity Interest Acquired, Percentage | 51.00% |  |  |  |  |  |  |  |  |  |  |
Common Stock, No Par Value (in dollars per share) | $ 0 |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | $ 18,400 |  |  |  |  |  |  |  |  |  |  |
Business Combination, Goodwill, Expected Tax Deductible, Amount | $ 0 |  |  |  |  |  |  |  |  |  |  |
Business Combination, Acquisition-Related Cost, Expense |  |  |  |  |  |  |  |  |  |  | $ 1,100 |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles |  |  |  |  |  | $ (7,000) |  |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment |  |  |  |  |  | 4,500 |  |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Cash and Cash Equivalents |  |  |  |  |  | 200 |  |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Liabilities |  |  |  |  |  | 500 |  |  |  |  |  |
Goodwill, Measurement Period Adjustment |  |  |  |  |  | $ 1,800 |  |  |  |  |  |
Amortization of Intangible Assets |  |  |  |  |  |  | 170 |  |  |  | 500 |
Depreciation |  |  |  |  |  |  | 544 |  |  |  | $ 1,500 |
Amplex Holdings [Member] | Revision of Prior Period, Adjustment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Intangible Assets |  |  |  |  |  |  | (39) |  |  |  |  |
Depreciation |  |  |  |  |  |  | 207 |  |  |  |  |
Amplex Holdings [Member] | Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Intangible Assets |  |  |  |  |  |  | 208 |  |  |  |  |
Depreciation |  |  |  |  |  |  | $ 337 |  |  |  |  |

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