Debt and Credit Sources - Schedule of Debt (Details) - USD ($)	3 Months Ended
	Apr. 04, 2021	Jul. 04, 2021	Apr. 30, 2021	Jan. 03, 2021	Dec. 31, 2015	Jun. 30, 2014	Dec. 31, 2010
Debt Instrument [Line Items]
Face Value		$ 558,678,000
CEDA loan
Debt Instrument [Line Items]
Interest rate							8.50%
Face Value		0	$ 30,000,000.0	$ 30,000,000
Short-term		0		0
Long-term		0		29,219,000
Total		0		29,219,000
Other debt
Debt Instrument [Line Items]
Face Value		133,683,000		126,283,000
Short-term		74,071,000		97,059,000
Long-term		58,224,000		27,228,000
Total		132,295,000		124,287,000
Convertible debt:
Debt Instrument [Line Items]
Face Value		424,995,000		487,634,000
Convertible debt: | 0.875% debentures due 2021
Debt Instrument [Line Items]
Interest rate						0.875%
Face Value		0		62,634,000		$ 400,000,000.0
Short-term		0		62,531,000
Long-term		0		0
Total		0		62,531,000
Convertible debt: | 4.00% debentures due 2023
Debt Instrument [Line Items]
Interest rate					4.00%
Face Value		424,995,000		425,000,000	$ 425,000,000.0
Short-term		0		0
Long-term		423,059,000		422,443,000
Total		423,059,000		422,443,000
Face amount decrease by due to bond conversion	$ 5,000.0
Convertible and Loans
Debt Instrument [Line Items]
Face Value		558,678,000		643,917,000
Short-term		74,071,000		159,590,000
Long-term		481,283,000		478,890,000
Total		$ 555,354,000		$ 638,480,000