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EMPLOYEE STOCK PLANS (Details) - shares
12 Months Ended
Apr. 23, 2015
Jan. 03, 2016
Dec. 28, 2014
Apr. 22, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Term of equity awards granted   10 years    
Equity award vesting period   4 years    
1999 Stock Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Term of equity awards granted   10 years    
1999 Stock Plan | Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock options granted (in shares)       0
1999 Stock Plan | Period 1 | Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options vesting rate   25.00%    
Equity award vesting period   1 year    
1999 Stock Plan | Period 2 | Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Periodic vesting percentage   2.08%    
2009 Stock Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Term of equity awards granted   10 years    
Stock options granted (in shares)   2,929,000 1,139,000  
Additional shares of common stock reserved for issuance 2,500,000 2,500,000    
Shares reserved for issuance   9,700,000    
Forfeited or repurchased available for reissuance (up to) (in shares)   10,000,000.0    
2009 Stock Plan | Period 1 | Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options vesting rate   25.00%    
Equity award vesting period   1 year    
2009 Stock Plan | Period 1 | Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options vesting rate   25.00%    
Equity award vesting period   1 year    
2009 Stock Plan | Period 2 | Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Periodic vesting percentage   2.08%    
2009 Stock Plan | Period 2 | Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Periodic vesting percentage   12.50%    
Employee Stock Purchase Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Additional shares of common stock reserved for issuance 1,000,000      
Shares reserved for issuance   3,300,000    
Duration of offering period   6 months    
Percentage of employee's total compensation (up to)   20.00%    
Maximum shares per offering period   20,000    
Percentage of fair market value of common stock   85.00%