XML 44 R34.htm IDEA: XBRL DOCUMENT v3.7.0.1
Stock-Based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 01, 2017
Jul. 02, 2016
Jul. 01, 2017
Jul. 02, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense $ 1,132 $ 1,101 $ 5,803 $ 6,441
Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Fair value of granted stock options     7,206 7,680
Unrecognized compensation cost 4,721   $ 4,721  
Remaining requisite service period for unrecognized compensation cost (in years)     1 year 3 months 9 days  
Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Adjusted fair value of granted restricted stock units     $ 0 $ 712
Unrecognized compensation cost $ 621   $ 621  
Remaining requisite service period for unrecognized compensation cost (in years)     10 months 24 days