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

Share-based compensation (Q1) (Details)

v3.21.1
Share-based compensation (Q1) (Details)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2020
USD ($)
director
shares
Mar. 31, 2021
USD ($)
shares
Mar. 31, 2020
USD ($)
director
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
Nov. 11, 2019
shares
Nov. 10, 2019
shares
Stock Awards [Abstract]              
Share-based compensation | $   $ 2,525 $ 2,485        
Options granted (in shares)       1,050,000      
Number of non-employee directors | director 3   3        
Stock options              
Stock Awards [Abstract]              
Options granted (in shares)   5,579,000 100,000        
Restricted Stock              
Stock Awards [Abstract]              
Share-based compensation | $ $ 500            
Restricted Stock | Director              
Stock Awards [Abstract]              
Awards granted (in shares) 450,000            
Restricted Stock | Officer              
Stock Awards [Abstract]              
Awards granted (in shares) 5,956            
2019 Plan              
Stock Awards [Abstract]              
Awards available for issuance (in shares)       6,000,000     6,500,000
Annual percentage increase in awards authorized       10.00%      
2019 Plan | Stock options              
Stock Awards [Abstract]              
Share-based compensation | $       $ 7,500 $ 10,300    
Amended 2019 Plan              
Stock Awards [Abstract]              
Awards available for issuance (in shares)       13,500,000   9,000,000  
Annual percentage increase in awards authorized   10.00%