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Note 12 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 4 Months Ended | 12 Months Ended | 17 Months Ended | 23 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Apr. 03, 2023 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2024 | May 01, 2023 | Nov. 23, 2022 | Nov. 04, 2022
Payment, Excise Tax for Repurchased Shares |  | $ 11,376 | $ (0) | $ (0) |  |  |  |  |
Preferred Stock, Shares Authorized (in shares) |  | 1,000,000 | 1,000,000 |  | 1,000,000 | 1,000,000 |  |  |
Preferred Stock, Par or Stated Value Per Share (in dollars per share) |  | $ 0.01 | $ 0.01 |  | $ 0.01 | $ 0.01 |  |  |
Preferred Stock, Shares Issued (in shares) |  | 0 | 0 |  | 0 | 0 |  |  |
Preferred Stock, Shares Outstanding (in shares) |  | 0 | 0 |  | 0 | 0 |  |  |
Share Repurchase Program November 2022 [Member] |  |  |  |  |  |  |  |  |
Share Repurchase Program, Authorized, Amount |  |  |  |  |  |  |  |  | $ 1,500,000
Stock Repurchased and Retired During Period, Shares (in shares) |  |  |  |  |  | 30,000,000 |  |  |
Stock Repurchased and Retired During Period, Value |  |  |  |  |  | $ 1,500,000 |  |  |
Stock Repurchased During Period, Shares (in shares) |  | 0 |  |  |  |  |  |  |
November 2022 ASR Agreement [Member] |  |  |  |  |  |  |  |  |
Share Repurchase Program, Authorized, Amount |  |  |  |  |  |  |  | $ 500,000 |
Stock Repurchased and Retired During Period, Shares (in shares) | 10,100,000 |  |  |  |  |  |  |  |
Stock Repurchased and Retired During Period, Value | $ 500,000 |  |  |  |  |  |  |  |
Share Repurchase Program April 2023 [Member[ |  |  |  |  |  |  |  |  |
Stock Repurchased and Retired During Period, Shares (in shares) |  |  |  |  | 19,900,000 |  |  |  |
Stock Repurchased and Retired During Period, Value |  |  |  |  | $ 1,000,000 |  |  |  |
Share Repurchase Program, Remaining Authorized, Amount |  |  |  |  |  |  | $ 1,000,000 |  |

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- Definition Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-4 + Details
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