Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Earnings (Loss) Per Share
Income (loss) from continuing operations	$ 22,135	$ (18,491)	$ 45,042	$ (43,647)
Shares used in computing basic income (loss) per share	35,722	44,803	36,862	44,481
Effect of dilutive securities:
Convertible debt and stock-based awards	882		1,201
Shares used in computing diluted income (loss) per share	36,604	44,803	38,063	44,481
Income (loss) per share:
Income (loss) per share, Basic (in dollars per share)	$ 0.62	$ (0.41)	$ 1.22	$ (0.98)
Income (loss) per share, Diluted (in dollars per share)	$ 0.60	$ (0.41)	$ 1.18	$ (0.98)
Shares attributable to dilutive effect of conversion of debt securities	600	500	800	800