Composition Of Certain Financial Statement Captions (Tables)

6 Months Ended

Mar. 27, 2020

Composition Of Certain Financial Statement Captions [Abstract]

Schedule Of Accounts Receivable

Accounts Receivable

	March 27, 2020		September 27, 2019
Trade accounts receivable	$	165,421	$	151,996
Accounts receivable from patent administration program licensees	92,884		46,894
Accounts receivable, gross	258,305		198,890
Less: allowance for doubtful accounts	(11,262)		(9,775)
Total	$	247,043	$	189,115

Schedule Of Inventories

Inventories

	March 27, 2020		September 27, 2019
Raw materials	$	6,421	$	8,031
Work in process	5,265		4,872
Finished goods	16,645		19,428
Total	$	28,331	$	32,331

Schedule Of Prepaid Expenses And Other Current Assets

Prepaid Expenses And Other Current Assets

	March 27, 2020		September 27, 2019
Prepaid expenses	$	27,803	$	17,997
Other current assets	23,353		20,924
Income tax receivable	—		783
Total	$	51,156	$	39,704

Schedule Of Accrued Liabilities

Accrued Liabilities

	March 27, 2020		September 27, 2019
Accrued royalties	$	2,947	$	2,957
Amounts payable to patent administration program partners	76,055		58,899
Accrued compensation and benefits	67,022		78,716
Accrued professional fees	16,600		19,216
Unpaid PP&E additions	9,820		15,332
Accrued customer refunds	15,751		24,299
Other accrued liabilities	57,674		68,725
Total	$	245,869	$	268,144

Schedule Of Other Non-Current Liabilities

Other Non-Current Liabilities

	March 27, 2020		September 27, 2019
Supplemental retirement plan obligations	$	3,602	$	3,466
Non-current tax liabilities (1)	137,214		136,323
Other liabilities	37,989		37,673
Total	$	178,805	$	177,462