Earnings Per Share - Anti-dilutive Securities (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2021	Jun. 26, 2020	Jul. 02, 2021	Jun. 26, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential weighted common shares outstanding excluded from diluted net loss per share	5,849	5,102	6,002	5,704
Convertible Debt
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential weighted common shares outstanding excluded from diluted net loss per share	1,645	0	1,720	584
Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential weighted common shares outstanding excluded from diluted net loss per share	839	1,558	1,015	1,677
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential weighted common shares outstanding excluded from diluted net loss per share	2,961	2,963	2,895	2,931
Employee Stock Purchase Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential weighted common shares outstanding excluded from diluted net loss per share	404	581	372	512