Balance Sheet Details - Details of Selected Balance Sheet Items (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 30, 2018	Dec. 29, 2018
Inventory:
Raw materials	$ 47,474		$ 74,435
Work in process	48,842		57,232
Finished goods	244,113		180,221
Total	340,429		311,888
Property, plant and equipment, net:
Property, plant and equipment, gross			630,251
Less accumulated depreciation and amortization			(287,431)
Total		$ 168,434	342,820
Property, plant and equipment and finance lease right of use asset, gross	489,998
Property, plant and equipment and finance lease right of use asset, accumulated depreciation and amortization	339,205
Property, plant and equipment and finance lease right of use asset, net	150,793
Accrued expenses:
Loss contingency related to non-cancelable purchase commitments	24,812		26,042
Professional and other consulting fees	12,296		10,442
Taxes payable	65,815		23,249
Accrued rebate and customer prepay liability	4,390		14,301
Restructuring accrual	26,076		13,097
Acquisition-related funds in escrow	0		10,000
Short-term financing lease obligation	1,380		4,718
Short-term operating lease liability	18,106	$ 19,209	0
Other accrued expenses and other current liabilities	40,293		30,042
Total accrued expenses	193,168		131,891
Computer hardware
Property, plant and equipment, net:
Property, plant and equipment, gross	36,086		15,633
Computer software
Property, plant and equipment, net:
Property, plant and equipment, gross	45,428		40,923
Laboratory and manufacturing equipment
Property, plant and equipment, net:
Property, plant and equipment, gross			304,889
Property, plant and equipment and finance lease right of use asset, gross	313,081
Accrued expenses:
Short-term financing lease obligation			1,000
Land and building
Property, plant and equipment, net:
Property, plant and equipment, gross	12,349		187,184
Furniture and fixtures
Property, plant and equipment, net:
Property, plant and equipment, gross	2,845		2,587
Leasehold and building improvements
Property, plant and equipment, net:
Property, plant and equipment, gross			46,038
Property, plant and equipment and finance lease right of use asset, gross	52,263
Accrued expenses:
Short-term financing lease obligation	400
Construction in progress
Property, plant and equipment, net:
Property, plant and equipment, gross	$ 27,946		$ 32,997

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