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Stock Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2020
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense capitalized to inventory   $ 5.5 $ 4.3 $ 10.0 $ 8.1
Restricted Stock Unit Awards With Market Conditions          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted restricted stock units 126,710        
Award vesting service period 3 years        
Base percentage of annual target ceiling 100.00%        
Weighted-average fair value per RSU granted (in dollars per share) $ 112.12        
Restricted Stock Unit Awards With Market Conditions | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Annual percentage of shares earned, performance metric 0.00%        
Percentage of Annual TSR multiplier on absolute basis 50.00%        
Restricted Stock Unit Awards With Market Conditions | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Annual percentage of shares earned, performance metric 200.00%        
Restricted Stock Unit Awards With Performance Conditions, Non-GAAP Income Target          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted restricted stock units 63,400        
Award vesting service period 3 years        
Weighted-average fair value per RSU granted (in dollars per share) $ 73.82        
Restricted Stock Unit Awards With Performance Conditions, Non-GAAP Income Target | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Annual percentage of shares earned, performance metric 50.00%        
Restricted Stock Unit Awards With Performance Conditions, Non-GAAP Income Target | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Annual percentage of shares earned, performance metric 200.00%        
Restricted Stock Unit Awards With Performance Conditions, Strategic Goal Target          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted restricted stock units 63,400        
Award vesting service period 3 years        
Weighted-average fair value per RSU granted (in dollars per share) $ 73.82        
Restricted Stock Unit Awards With Performance Conditions, Strategic Goal Target | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Annual percentage of shares earned, performance metric 50.00%        
Restricted Stock Unit Awards With Performance Conditions, Strategic Goal Target | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Annual percentage of shares earned, performance metric 200.00%