Property and Equipment - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Sep. 30, 2021
Property Plant And Equipment [Abstract]
Computers, software, office equipment and furniture	$ 2,272	$ 2,170
Research equipment	28,370	27,500
Leasehold improvements	42,017	41,524
Construction in Progress	6,414	345
Land	2,996
Total gross fixed assets	82,069	71,539
Less: Accumulated depreciation and amortization	(27,181)	(22,864)
Property and equipment, net	$ 54,888	$ 48,675

Computers, software, office equipment and furniture gross.

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Research equipment gross.

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

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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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.

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