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Balance Sheet Accounts | 6 Months Ended
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Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Balance Sheet Accounts | BALANCE SHEET ACCOUNTS Property, Plant and Equipment The following table summarizes the Company’s major classes of property, plant and equipment:
| March 31, 2024 |  | September 30, 2023
| (in thousands)
Land | $ | 2,996 |  |  | $ | 2,996 |
Building | 75,262 |  |  | — |
Research equipment | 62,926 |  |  | 56,509 |
Furniture | 4,150 |  |  | 1,540 |
Computers and software | 923 |  |  | 700 |
Leasehold improvements | 104,723 |  |  | 103,813 |
Construction in progress | 158,243 |  |  | 166,655 |
| 409,223 |  |  | 332,213 |
Less: Accumulated depreciation and amortization | (49,971) |  |  | (41,951) |
Property, plant and equipment, net | $ | 359,252 |  |  | $ | 290,262 |
Depreciation and amortization expense for property, plant and equipment for the three months ended March 31, 2024 and 2023 was $4.1 million and $2.2 million, respectively. Depreciation and amortization expense for property and equipment for the six months ended March 31, 2024 and 2023 was $7.9 million and $4.5 million, respectively. During the first quarter of fiscal 2024, the Company completed the build out of one of its laboratory and office facilities in Verona, Wisconsin, which resulted in the reclassification of $75.3 million from construction in progress to building as of March 31, 2024. Further, the Company commenced depreciation on the newly completed facility over a 39-year period. Accrued Expenses Accrued expenses consist of the following:
| March 31, 2024 |  | September 30, 2023
| (in thousands)
Accrued R&D expenses | $ | 14,443 |  |  | $ | 16,125 |
Accrued R&D expenses; co-development | 13,751 |  |  | 5,895 |
Accrued capital expenditures | 7,265 |  |  | 14,044 |
Other | 1,596 |  |  | 3,699 |
Total accrued expense | $ | 37,055 |  |  | $ | 39,763 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//210/tableOfContent + Details
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