Composition of Certain Financial Statement Captions - Property and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Property and equipment	$ 184,539
Property and equipment		$ 172,075
Less: accumulated depreciation and amortization	(125,048)
Less: accumulated depreciation and amortization		(119,048)
Total	$ 59,491
Total		$ 53,027

Property, Plant, And Equipment And Finance Lease Right-of-Use Asset, Before Accumulated Depreciation And Amortization

No definition available.

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- Definition

Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization

+ References

No definition available.

+ Details

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- Definition

Property, Plant And Equipment And Finance Lease Right-of-Use Asset, After Accumulated Depreciation And Amortization

+ References

No definition available.

+ Details

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- References

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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