Earnings (Loss) Per Share - Schedule of Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Earnings Per Share [Abstract]
Net earnings (loss)	$ 13,433	$ 60,299	$ 40,160	$ (52,193)
Average number of shares outstanding, basic and diluted (in shares)	126,329	125,711	126,308	125,392
Earnings Per Share, Basic [Abstract]
Equivalent shares outstanding, basic (in shares)	126,329	125,711	126,308	125,392
Earnings per share, basic (in dollars per shares)	$ 0.11	$ 0.48	$ 0.32	$ (0.42)
Effect of dilutive securities:
Options and other share-based awards (in shares)	518	624	523	0
Equivalent shares outstanding, diluted (in shares)	126,847	126,335	126,831	125,392
Earnings per share, diluted (in dollars per shares)	$ 0.11	$ 0.48	$ 0.32	$ (0.42)