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Composition Of Certain Financial Statement Captions (Tables)
 6 Months Ended
Mar. 31, 2023
Composition Of Certain Financial Statement Captions [Abstract]  
Schedule Of Accounts Receivable Accounts Receivable and Contract Assets
March 31,
2023		September 30,
2022
Trade accounts receivable$178,079 $162,531 
Accounts receivable from patent administration program licensees115,227 92,896 
Contract assets275,390 176,218 
Accounts receivable and contract assets, gross568,696 431,645 
Less: allowance for credit losses on accounts receivable and contract assets(10,119)(11,959)
Total accounts receivable and contract assets, net$558,577 $419,686 
Schedule Of Allowance For Credit Losses
Allowance for Credit LossesBeginning BalanceCharges/(Credits) 
to S&M and G&A		Additions/(Deductions)Ending Balance
For fiscal year-to-date period ended:
September 30, 2022$8,952 $5,460 $(7)$14,405 
March 31, 202314,405 (2,072)(46)12,287 
Allowance for credit losses includes the provision for estimated credit losses on our sales-type leases, which was not material as of March 31, 2023 and as of September 30, 2022.
Schedule Of Inventories Inventories
March 31,
2023		September 30,
2022
Raw materials$7,775 $10,026 
Work in process3,708 4,955 
Finished goods18,870 8,568 
Total inventories$30,353 $23,549 
Schedule Of Prepaid Expenses And Other Current Assets Prepaid Expenses and Other Current Assets
March 31,
2023		September 30,
2022
Prepaid expenses$25,539 $26,851 
Other current assets28,314 23,224 
Total prepaid expenses and other current assets$53,853 $50,075 
Schedule Of Accrued Liabilities Accrued Liabilities
March 31,
2023		September 30,
2022
Amounts payable to patent administration program partners$78,142 $63,106 
Accrued compensation and benefits80,498 84,111 
Accrued professional fees21,083 13,057 
Unpaid property, plant, and equipment additions17,774 15,428 
Accrued customer refunds3,856 3,674 
Accrued market development funds11,279 7,206 
Other accrued liabilities34,125 43,655 
Total accrued liabilities$246,757 $230,237 
Schedule Of Other Non-Current Liabilities
Other Non-Current Liabilities
March 31,
2023		September 30,
2022
Supplemental retirement plan obligations$3,902 $4,127 
Non-current tax liabilities (1)
93,465 83,758 
Other liabilities10,799 12,237 
Total other non-current liabilities$108,166 $100,122 
(1)        Refer to Note 12 "Income Taxes" for additional information related to our tax liabilities.