Computation of Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2020	Sep. 27, 2019	Oct. 02, 2020	Sep. 27, 2019
Earnings Per Share Reconciliation [Abstract]
Earnings from continuing operations	$ (38,507)	$ 10,130	$ (39,014)	$ 22,341
Earnings from discontinued operations, net of tax	0	132,646	692	148,026
Net (loss) earnings	$ (38,507)	$ 142,776	$ (38,322)	$ 170,367
Basic:
Weighted average number of shares outstanding (in shares)	27,687	27,952	27,718	27,941
Basic earnings per share from continuing operations	$ (1.39)	$ 0.36	$ (1.41)	$ 0.80
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	0.00	4.75	0.03	5.30
Basic earnings per share (in usd per share)	$ (1.39)	$ 5.11	$ (1.38)	$ 6.10
Diluted:
Weighted average shares issuable on exercise of dilutive stock options (in shares)	0	165	0	163
Diluted (in shares)	27,687	28,117	27,718	28,104
Diluted earnings per share from continuing operations	$ (1.39)	$ 0.36	$ (1.41)	$ 0.79
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	0.00	4.72	0.03	5.27
Diluted earnings per share (in usd per share)	$ (1.39)	$ 5.08	$ (1.38)	$ 6.06