General form of registration statement for all companies including face-amount certificate companies

Share-based compensation (Q3) (Details)

v3.20.4
Share-based compensation (Q3) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
May 06, 2019
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 19, 2019
Apr. 29, 2019
Stock Awards [Abstract]                  
Share-based compensation expense   $ 1,543 $ 2,496 $ 7,047 $ 6,708        
Awards granted (in shares)           2,503,371      
Stock options                  
Stock Awards [Abstract]                  
Awards granted (in shares)     160,000 300,000 5,993,000   38,462    
2019 Plan                  
Stock Awards [Abstract]                  
Awards available for issuance (in shares)           6,000,000     6,000,000
2019 Plan | Stock options                  
Stock Awards [Abstract]                  
Share-based compensation expense           $ 10,300 $ 400    
Awards granted (in shares) 2,503,371                
Amended 2019 Plan                  
Stock Awards [Abstract]                  
Awards available for issuance (in shares)               9,000,000