Net Loss Per Share - Calculation of Basic and Diluted Net Loss per share Attributable (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net loss attributable to stockholders	$ (1,431)	$ (89,724)
Basic (shares)	168,822	141,720
Basic net loss per share	$ (0.01)	$ (0.63)
Net loss available to common stockholders	$ (1,431)	$ (89,724)
Diluted (shares)	168,822	141,720
Dilutive net loss per share	$ (0.01)	$ (0.63)
Restricted stock units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Restricted stock units (in shares)	0	0