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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Sep. 30, 2024
Accounting Policies [Abstract]  
Schedule of Supplemental Disclosures of Cash Flow Information
Supplemental Disclosures of Cash Flow Information (in thousands): 
 Year Ended September 30,
 202420232022
Cash paid (received) during the period for:  
Interest received, net of interest expense$(15,641)$(5,465)$(334)
Income taxes paid, net of refunds50,919 17,232 533 
Non-cash capital expenditures361 183 1,133