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Earnings (Loss) Per Share (Narrative) (Details) - shares
1 Months Ended 3 Months Ended 9 Months Ended
Feb. 22, 2021
Oct. 02, 2021
Sep. 26, 2020
Oct. 02, 2021
Sep. 26, 2020
Stock options, restricted stock units and performance share units [Member]          
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]          
Antidilutive securities excluded from computation of earnings per share, amount   1,576,776 1,360,975 3,412,854 975,742
Stock options and restricted stock units [Member]          
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]          
Antidilutive securities excluded from computation of earnings per share, amount   443,308 1,767,856 259,245 3,286,487
Series B Preferred Stock [Member]          
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]          
Common shares issuable on an if-converted basis adjusted to diluted EPS   12,178,667 12,178,667 12,178,667 12,178,667
Series A Preferred Stock [Member]          
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]          
Common shares issuable on an if-converted basis adjusted to diluted EPS     12,633,429   12,633,429
Series A Preferred Stock [Member] | Oaktree Capital Management L.P. [Member]          
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]          
Series A Preferred Stock exchanged for common shares 12,633,427        
Percentage of issued and outstanding common shares on a post-exchange basis 12.30%