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Earnings (Loss) Per Share (Disclosure of basic and diluted earnings (loss) per share) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Apr. 03, 2021
Mar. 28, 2020
Numerator for basic earnings (loss) per share:    
Earnings (loss) from continuing operations $ 1,672 $ (3,964)
Less: dividends and accretion (1,953) (2,025)
Loss from continuing operations attributable to common shareholders (281) (5,989)
Earnings from discontinued operations 0 7,325
Earnings (loss) attributable to common shareholders $ (281) $ 1,336
Denominator for basic earnings (loss) per share:    
Basic weighted-average number of shares outstanding 96,120 88,161
From continuing operations $ (0.00) $ (0.07)
From discontinued operations 0 0.08
Basic earnings (loss) per share $ 0.00 $ 0.02
Numerator for diluted earnings (loss) per share:    
Earnings (loss) from continuing operations $ 1,672 $ (3,964)
Loss from continuing operations attributable to common shareholders (281) (5,989)
Earnings from discontinued operations 0 7,325
Earnings (loss) attributable to common shareholders $ (281) $ 1,336
Denominator for diluted earnings (loss) per share:    
Basic weighted-average number of shares outstanding 96,120 88,161
Dilutive effect of the following:    
Diluted weighted-average number of shares outstandin 96,120 88,161
From continuing operations $ (0.00) $ (0.07)
From discontinued operations 0 0.08
Diluted earnings (loss) per share $ (0.00) $ 0.02
Series A Preferred Stock [Member]    
Numerator for basic earnings (loss) per share:    
Less: dividends and accretion $ (1,212) $ (2,025)
Numerator for diluted earnings (loss) per share:    
Less: dividends and accretion on Preferred Stock $ (1,212) $ (2,025)
Dilutive effect of the following:    
Diluted weighted-average number of shares outstandin 0 0
Series B Preferred Stock [Member]    
Numerator for basic earnings (loss) per share:    
Less: dividends and accretion $ (741) $ 0
Numerator for diluted earnings (loss) per share:    
Less: dividends and accretion on Preferred Stock $ (741) $ 0
Dilutive effect of the following:    
Diluted weighted-average number of shares outstandin 0 0
Stock options, restricted stock units and performance share units [Member]    
Dilutive effect of the following:    
Diluted weighted-average number of shares outstandin 0 0