Segment Information and Sales to Significant Customers - Summary of Long-lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 607,951	$ 525,314
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	104,918	95,876
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	211,292	206,086
Israel [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	237,561	168,493
India [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	38,706	36,546
Others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 15,474	$ 18,313

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(14))
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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-Section S99
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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