Convertible Debt Interest Expense (Details) - Convertible Debt $ in Thousands	12 Months Ended
Jan. 02, 2021 USD ($)
Debt Disclosure [Line Items]
Contractual interest expense	$ 2,720
Interest cost related to amortization of the debt discount and issuance costs	7,971
Total interest expense	$ 10,691

Amount of the cost of borrowed funds accounted for as interest expense.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration