Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Oct. 03, 2020	Sep. 28, 2019
Income Tax Disclosure [Abstract]
Reserves and accruals not currently deductible	$ 28,520	$ 24,069
Operating loss carryforwards and tax credits	83,447	71,890
Deferred revenue	4,412	986
Depreciation and amortization	14,362	0
Stock-based compensation	4,906	5,649
Competent authority offset to transfer pricing tax reserves	4,283	10,585
Accumulated translation adjustment	2,508	5,459
Retirement and pension	17,982	16,618
Lease liabilities	21,737	0
Other	165	4,423
Total gross deferred tax assets	182,322	139,679
Valuation allowance	(57,707)	(41,491)
Total net deferred tax assets	124,615	98,188
Depreciation and amortization	0	23,625
Deferred tax liabilities on foreign earnings	16,055	14,603
Inventory capitalization	1,394	734
Right of use assets	20,859	0
Total gross deferred tax liabilities	38,308	38,962
Net deferred tax assets	$ 86,307	$ 59,226