Goodwill and Intangible Assets (Tables)

6 Months Ended

Mar. 26, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table outlines changes to the carrying amount of goodwill (in thousands):

	Goodwill
Balance at September 25, 2020	$	336,945
Translation adjustments	1,290
Balance at March 26, 2021	$	338,235

Schedule of Finite-Lived Intangible Assets

Intangible assets subject to amortization consist of the following (in thousands):

	March 26, 2021						September 25, 2020
Intangible Assets	Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
Acquired patents and technology	$	342,807	$	(220,006)	$	122,801	$	342,637	$	(206,123)	$	136,514
Customer relationships	64,746		(50,807)		13,939		64,740		(49,062)		15,678
Other intangibles	22,976		(22,772)		204		22,969		(22,730)		239
Total	$	430,529	$	(293,585)	$	136,944	$	430,346	$	(277,915)	$	152,431

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

As of March 26, 2021, expected amortization expense of our intangible assets in future fiscal periods was as follows (in thousands):

Fiscal Year	Amortization Expense
Remainder of 2021	$	15,448
2022	28,291
2023	23,923
2024	21,894
2025	6,840
Thereafter	40,548
Total	$	136,944