v3.25.4

Detail of Selected Balance Sheet Accounts - Components of Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Raw materials, parts and sub-assemblies	$ 91,038	$ 90,743
Work-in-progress	2,093	2,222
Provision for excess and obsolete inventories	(8,172)	(8,246)
Total inventories	$ 84,959	$ 84,719

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
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- Definition

Aggregated amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. This amount is net of valuation reserves and adjustments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 330
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-Section S99
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- Definition

Amount of valuation reserve for inventory.

+ References

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Balance Type:	credit
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- Definition

Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
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- References

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POWELL INDUSTRIES INC 10-Q