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v3.25.3

Note 5 - Leases (Details Textual) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 31, 2025 USD ($) ft² | Dec. 31, 2024 USD ($) | Aug. 31, 2023 ft² | Feb. 28, 2019 ft² | Jun. 30, 2012 USD ($) ft² | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Apr. 01, 2025 ft² | Dec. 31, 2011 ft²
Increase (Decrease) in Operating Lease Assets and Liabilities, Net |  |  |  |  |  |  |  | $ 1,266 | $ 1,164 |  |
Operating Lease, Expense |  |  |  |  |  | $ 1,100 | $ 1,200 | 3,400 | 3,700 |  |
Other Nonoperating Income (Expense) [Member] |  |  |  |  |  |  |  |  |  |  |
Sublease Income |  |  |  |  |  | $ 200 | $ 200 | $ 700 | $ 700 |  |
CALIFORNIA |  |  |  |  |  |  |  |  |  |  |
Percentage of Annual Rent Increment |  |  | 3.00% | 3.00% |  |  |  |  |  |  |
Area of Subleased Property (Square Foot) | ft² |  |  | 13,916 | 12,429 |  |  |  |  |  | 12,429 |
Lease Agreement One [Member] |  |  |  |  |  |  |  |  |  |  |
Area of Leased Property (Square Foot) | ft² | 26,700 |  |  |  |  |  |  |  |  |  | 65,656
Lessee, Operating Lease, Renewal Term (Year) | 5 years 5 months |  |  |  |  |  |  |  |  |  |
Lease Option To Extend Term (Year) | 5 years |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Operating Lease Assets and Liabilities, Net | $ 4,100 |  |  |  |  |  |  |  |  |  |
Sublease Income |  | $ 700 |  |  |  |  |  |  |  |  |
Lease Agreement Two [Member] |  |  |  |  |  |  |  |  |  |  |
Area of Leased Property (Square Foot) | ft² |  |  |  |  | 29,470 |  |  |  |  |  |
Lease Option To Extend Term (Year) |  |  |  |  | 5 years |  |  |  |  |  |
Percentage of Annual Rent Increment |  |  |  |  | 3.00% |  |  |  |  |  |
Letters of Credit Outstanding, Amount |  |  |  |  | $ 1,100 |  |  |  |  |  |

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