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Stockholders' Equity - Narrative (Details)
1 Months Ended 3 Months Ended
May 31, 2019
USD ($)
shares
Mar. 28, 2020
USD ($)
shares
Mar. 30, 2019
USD ($)
Mar. 27, 2020
$ / shares
Dec. 28, 2019
shares
Sep. 27, 2019
$ / shares
May 31, 2018
shares
Feb. 28, 2007
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Stock options, granted (in shares)   0            
Closing price of common stock (in usd per share) | $ / shares       $ 5.14   $ 5.14    
Stock options outstanding                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Options to purchase shares, outstanding (in shares)   605,000     730,000      
Stock options, granted (in shares)   0            
Closing price of common stock (in usd per share) | $ / shares       5.14        
RSUs and PSUs                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Closing price of common stock (in usd per share) | $ / shares       $ 5.14        
Restricted stock units                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of RSUs outstanding (in shares)   17,213,000     11,600,000      
Number of units granted (in shares)   5,978,000            
Amortization of stock-based compensation | $   $ 8,300,000 $ 6,000,000.0          
PSUs                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of RSUs outstanding (in shares)   4,057,000     2,505,000      
Number of units granted (in shares)   1,628,000            
Performance stock unit grants                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Amortization of stock-based compensation | $   $ 1,600,000 $ 1,700,000          
2007 Equity Incentive Plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Reserved common stock for issuance of options (in shares)               46,800,000
Duration of ESPP 20 years              
Payroll deduction price as a percentage of market value 85.00%              
Maximum employee subscription rate 15.00%              
Maximum number of shares per employee (in shares) 3,000              
Maximum annual purchases per employee, amount | $ $ 25,000              
Number of shares authorized to be issued (in shares) 31,600,000              
2007 Equity Incentive Plan | Stock options outstanding                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Options to purchase shares, outstanding (in shares)   600,000            
2007 Equity Incentive Plan | Restricted stock units                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of RSUs outstanding (in shares)   200,000            
2016 Equity Incentive Plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Reserved common stock for issuance of options (in shares)   22,700,000            
Increase in number of shares authorized (in shares) 7,300,000           1,500,000  
Plan maximum term   10 years            
2016 Equity Incentive Plan | PSUs                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Performance period   3 years            
2016 Equity Incentive Plan | PSUs | Minimum                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Ranges of number of shares issued on vesting of PSUs   0            
2016 Equity Incentive Plan | PSUs | Maximum                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Ranges of number of shares issued on vesting of PSUs   2            
2016 Equity Incentive Plan | PSUs | Existing employees | Vesting 1                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Duration of grants based on shareholder return of common stock price versus designated index   1 year            
2016 Equity Incentive Plan | PSUs | Existing employees | Vesting 2                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Duration of grants based on shareholder return of common stock price versus designated index   2 years            
2016 Equity Incentive Plan | PSUs | Existing employees | Vesting 3                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Duration of grants based on shareholder return of common stock price versus designated index   3 years