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Note 7 - Property, Plant and Equipment | 12 Months Ended
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Sep. 30, 2025
Notes to Financial Statements |
Property, Plant and Equipment Disclosure [Text Block] | 7. Property, Plant and Equipment Property, plant and equipment were as follows as of September 30, 2025 and 2024 (in thousands):
|  | September 30, |
|  | 2025 |  |  | 2024 |
Buildings, land, and land use right |  | $ | 33,990 |  |  | $ | 32,907 |
Computer equipment and software |  |  | 50,783 |  |  |  | 40,655 |
Machinery and equipment |  |  | 143,224 |  |  |  | 123,812 |
Furniture and fixtures |  |  | 5,371 |  |  |  | 4,989 |
Leasehold improvements |  |  | 61,242 |  |  |  | 59,951 |
Capital projects in process |  |  | 22,388 |  |  |  | 29,554 |
Right-of-use asset |  |  | — |  |  |  | 4,570 |
Vehicles |  |  | 2,965 |  |  |  | 1,308 |
Property, plant and equipment, gross |  |  | 319,963 |  |  |  | 297,746 |
Less: accumulated depreciation and amortization |  |  | (166,009 | ) |  |  | (142,124 | )
Property, plant and equipment, net |  | $ | 153,954 |  |  | $ | 155,622 |
Depreciation expense, which includes amortization expense on finance leases, was $32.0 million, $29.7 million and $29.3 million, respectively, for the fiscal years ended September 30, 2025, 2024, and 2023. The Company recorded $5.5 million of additions to property, plant and equipment for which cash payments had not yet been made as of September 30, 2025. As of September 30, 2025 and 2024, the Company had cumulative capitalized direct costs of $38.5 million and $32.8 million, respectively, associated with the development of software for its internal use. As of September 30, 2025, this balance included $1.1 million associated with software still in the development stage included within “Property, plant and equipment, net” in the Consolidated Balance Sheets. During fiscal year 2025, the Company capitalized direct costs of $5.7 million associated with the development of software for its internal use.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
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