Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Earnings (Loss) Per Share
Income (loss) from continuing operations	$ 20,999	$ (19,740)	$ 66,041	$ (63,387)
Shares used in computing basic earnings (loss) per share	34,079	43,385	35,935	44,103
Effect of dilutive securities:
Stock-based awards and convertible debt	700		1,033
Shares used in computing diluted earnings (loss) per share	34,779	43,385	36,968	44,103
Basic	$ 0.62	$ (0.45)	$ 1.84	$ (1.44)
Diluted	$ 0.60	$ (0.45)	$ 1.79	$ (1.44)
Income (loss) per share:
Shares excluded from calculation of diluted shares due to loss from continuing operations		1,200		1,300
Shares attributable to dilutive effect of conversion of debt securities	400	700	700	800