Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity and Share-Based Compensation - Warrants (Details)

v3.19.1
Stockholders' Equity and Share-Based Compensation - Warrants (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Apr. 26, 2017
May 05, 2009
Dec. 29, 2018
Dec. 30, 2017
Aug. 08, 2016
Apr. 27, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expired (in shares)     816,000 406,000    
Compensation expense     $ 3,595 $ 2,842    
Common stock warrants            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Exercise price (in dollars per share)   $ 2.14       $ 8.32
Expiration period   7 years        
Warrants outstanding (in shares)     0      
Warrants Issued | Common stock warrants            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of warrants issued during the period (in shares)   30,000     10,000 20,000
Expired (in shares) 20,000          
Number of exercisable warrants (in shares)     0