Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Payments - Stock Options (Details)

v3.21.1
Stock-Based Payments - Stock Options (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Unrecognized compensation costs $ 17.1  
Period in which compensation costs will be recognized 2 years 10 months 24 days  
Granted and outstanding (in shares) 1,059,600  
Intrinsic value of options exercised $ 0.1 $ 0.1
Advisor | Performance-based stock options    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Unrecognized compensation costs $ 0.3  
Period in which compensation costs will be recognized 5 years 6 months  
Granted and outstanding (in shares) 75,000