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Composition Of Certain Financial Statement Captions (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Composition Of Certain Financial Statement Captions [Line Items]
Unbilled Receivables, Current	$ 141,200	$ 106,900
Raw materials	5,833	10,026
Other Noncurrent Assets [Member]
Composition Of Certain Financial Statement Captions [Line Items]
Raw materials	$ 1,900	$ 2,800

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- Definition

Composition Of Certain Financial Statement Captions [Line Items].

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6)(a)(4))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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- Definition

Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.

+ References

No definition available.

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