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Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 03, 2021 | Jul. 04, 2020 | Jul. 03, 2021 | Jul. 04, 2020
Earnings (loss) per share: |  |  |  |
Loss from continuing operations | $ (18,491) | $ (36,045) | $ (43,647) | $ (67,436)
Shares used in computing basic earnings (loss) per share | 44,803 | 43,761 | 44,481 | 43,699
Shares used in computing diluted loss per share | 44,803 | 43,761 | 44,481 | 43,699
Earnings (loss) per share: |  |  |  |
Loss per share, Basic (in dollars per share) | $ (0.41) | $ (0.82) | $ (0.98) | $ (1.54)
Loss per share, Diluted (in dollars per share) | $ (0.41) | $ (0.82) | $ (0.98) | $ (1.54)
Shares excluded from calculation of diluted shares due to loss from continuing operations | 1,000 | 300 | 1,300 | 500
Shares attributable to dilutive effect of conversion of debt securities | 500 | 0 | 800 | 200
RSUs and MSUs |  |  |  |
Earnings (loss) per share: |  |  |  |
Anti-dilutive securities excluded from computation of diluted earnings (loss) per share | 0 | 400 | 0 | 300

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