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Stock Incentive Plans - Additional Information (Detail) - USD ($)
3 Months Ended
Jan. 02, 2020
Mar. 31, 2021
Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total intrinsic value of options exercised   $ 9,100,000 $ 700,000
Share-based compensation expense tax benefit recognized   0  
Share-based compensation expense capitalized   $ 0  
2014 Employee Stock Purchase Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum portion of employee ESPP plan contribution   15.00%  
Maximum value of employee purchased shares per calendar year   $ 25,000  
Offering period for employee stock purchases   6 months  
Applicable exercise date an offering period shall be equal to percentage of the lower of fair market value of common stock   85.00%  
Issuance of common stock under ESPP (in shares) 24,052    
Aggregate proceeds from the issuance of shares $ 800,000    
Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Intrinsic value of RSUs   $ 126,200,000  
Total unrecognized compensation costs related to stock options and RSUs   $ 50,700,000  
Stock options and RSUs expected weighted average period   1 year 10 months 28 days  
Employee Stock Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options and RSUs expected weighted average period   2 years 10 months 20 days  
Total fair value of options vested during period   $ 2,700,000  
Total unrecognized compensation costs related to stock options   $ 25,200,000