Annual report pursuant to Section 13 and 15(d)

Defined Contribution Plan - (Details)

v3.19.3.a.u2
Defined Contribution Plan - (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 01, 2017
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Defined Contribution Plan Disclosure [Line Items]        
Employer match (as a percent) 100.00%      
Plan Compensation (as a percent) 1.00%      
Employee contribution (as a percent) 50.00%      
Contribution made by the company   $ 0.5 $ 0.4 $ 0.3
Minimum [Member]        
Defined Contribution Plan Disclosure [Line Items]        
Plan Compensation (as a percent) 1.00%      
Maximum [Member]        
Defined Contribution Plan Disclosure [Line Items]        
Plan Compensation (as a percent) 6.00%