v3.22.2.2
Property and Equipment
 12 Months Ended
Sep. 30, 2022
Property, Plant and Equipment [Abstract]  
Property and Equipment PROPERTY AND EQUIPMENT
The following table summarizes the Company’s major classes of property and equipment:
September 30,
20222021
(in thousands)
Computers, software, office equipment and furniture $2,182 $2,170 
Land2,996 — 
Research equipment38,283 27,500 
Leasehold improvements42,017 41,524 
Construction in progress56,373 345 
141,851 71,539 
Less: Accumulated depreciation and amortization(31,554)(22,864)
Property and equipment, net$110,297 $48,675 
Depreciation and amortization expense for property and equipment for the years ended September 30, 2022, 2021, and 2020 was $8.7 million, $6.6 million and $4.2 million respectively.
The increase in the construction in progress during 2022 was mainly due to the developments of manufacturing, laboratory and office facilities in Verona, Wisconsin as well as a new laboratory and office facility in San Diego, California. See Note 7.