Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Retirement Plan (Detail)

v3.19.3.a.u2
Retirement Plan (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Retirement Benefits [Abstract]      
Matching percentage of company of every dollar contributed (as a percent) 100.00%    
Maximum annual contribution (as a percent) 3.00%    
Additional matching contribution (as a percent) 50.00%    
Additional percentage of compensation subject to matching contribution (as a percent) 2.00%    
Maximum company match (as a percent) 4.00%    
Company contributions $ 4.4 $ 2.7 $ 2.5