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Stockholders' Equity (Employee and Director Stock Options, Restricted Stock and ESPP) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Dec. 28, 2013
May. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense $ 21,643 $ 12,802 $ 9,522  
Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense   700    
ESPP        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized 5,200,000.0      
2012 ESPP | ESPP        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized 2,300,000.0     3,000,000
Percentage of employee's compensation maximum for employee share purchases 10.00%      
Purchase price of shares as percentage of fair market value 85.00%      
2012 ESPP | ESPP | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense $ 400 $ 300 $ 200