Property and Equipment - Summary of Property and Equipment (Detail) - USD ($)	Mar. 31, 2020	Sep. 30, 2019
Property Plant And Equipment [Abstract]
Computers, office equipment and furniture	$ 635,769	$ 637,577
Research equipment	18,098,960	12,932,304
Software	293,189	147,254
Leasehold improvements	24,187,465	21,579,415
Total gross fixed assets	43,215,383	35,296,550
Less: Accumulated depreciation and amortization	(13,852,642)	(12,081,651)
Property and equipment, net	$ 29,362,741	$ 23,214,899

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 before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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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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