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Stockholders' Equity and Stock-based Compensation (Plan Information) (Details) - shares
12 Months Ended
Sep. 26, 2012
Dec. 31, 2019
2012 Equity Incentive Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares authorized (in shares)   13,741,931
Shares available for future grants under an equity incentive plan   5,243,730
2012 Equity Incentive Plan | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expiration period 10 years  
2012 Equity Incentive Plan | Stock Options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period 4 years  
Term of award 10 years  
2000 Equity Incentive Plan | Stock Options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period   4 years
Term of award   10 years
Number of shares available for issuance (in shares)   0
2000 Equity Incentive Plan | Stock Options | Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award strike price as a percentage of market value   85.00%
Increase of Number of Shares Option | 2012 Equity Incentive Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Equity incentive plan annual increase (in shares) 3,050,000  
Increase of Percentage of Shares Outstanding Option | 2012 Equity Incentive Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Equity incentive plan, annual increase, percent of shares outstanding 5.00%