Quarterly report pursuant to Section 13 or 15(d)

Net Income (Loss) Per Share - Anti-Dilutive Securities Excluded from Calculation of Diluted Earnings Per Share (Detail)

v3.8.0.1
Net Income (Loss) Per Share - Anti-Dilutive Securities Excluded from Calculation of Diluted Earnings Per Share (Detail) - shares
shares in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Sep. 30, 2017
Oct. 01, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive securities excluded from calculation of diluted earnings per share (in shares) 3,911 1,717 3,687 2,655
Common stock warrants        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive securities excluded from calculation of diluted earnings per share (in shares) 0 20 8 20
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) 0 0 0 0
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) 224 555 302 528
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) 115 0 221 0
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) 3,572 1,142 3,156 2,107