Quarterly report pursuant to Section 13 or 15(d)

Net Income (Loss) Per Share - Anti-Dilutive Securities (Details)

v3.20.2
Net Income (Loss) Per Share - Anti-Dilutive Securities (Details)
 3 Months Ended 6 Months Ended
Jun. 19, 2020
$ / shares
shares
Jun. 27, 2020
shares
Jun. 29, 2019
shares
Jun. 27, 2020
shares
Jun. 29, 2019
shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Anti-dilutive securities excluded from calculation of diluted earnings per share (in shares)   239,000 10,908,000 3,172,000 10,166,000
Performance stock units          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Anti-dilutive securities excluded from calculation of diluted earnings per share (in shares)     651,000   332,000
Restricted stock units          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Anti-dilutive securities excluded from calculation of diluted earnings per share (in shares)   3,000 248,000 2,000 289,000
Series A Convertible Preferred Stock          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Anti-dilutive securities excluded from calculation of diluted earnings per share (in shares)     2,771,000 2,551,000 2,771,000
Stock conversion ratio 1        
Minimum weighted average common stock price | $ / shares $ 4.35        
Maintenance of weighted average price trading days 30 days        
Conversion of preferred stock (in shares) 2,620,687        
Options to purchase common stock          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Anti-dilutive securities excluded from calculation of diluted earnings per share (in shares)   236,000 7,238,000 619,000 6,774,000