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

Related party transactions (FY) (Details)

v3.21.1
Related party transactions (FY) (Details)
$ in Thousands
 1 Months Ended 3 Months Ended 8 Months Ended 12 Months Ended
Nov. 30, 2020
shares
Jul. 20, 2020
director
shares
Jun. 24, 2020
director
shares
Mar. 17, 2020
shares
Dec. 19, 2019
USD ($)
shares
Nov. 04, 2019
shares
Sep. 30, 2020
shares
Jun. 30, 2020
USD ($)
shares
Mar. 31, 2021
USD ($)
shares
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2020
USD ($)
director
shares
Dec. 31, 2019
USD ($)
Related Party Transactions [Abstract]                          
Subordinated convertible notes issued                 $ 19,609   $ 16,370 $ 18,910 $ 16,370
Warrants issued (in shares) | shares 400,000 200,000 1,000,000 1,003,232 937,500 11,000 570,258 1,990,624 3,288,400   17,414,030 49,928,469  
Member of Board of Directors                          
Related Party Transactions [Abstract]                          
Warrants issued (in shares) | shares   500,000 2,000,000                    
Number of members of board of directors to whom warrants were issued | director   3 3                    
Member of Board of Directors | Shareholder Guaranties                          
Related Party Transactions [Abstract]                          
Warrants issued (in shares) | shares                       6,500,000  
Number of members of board of directors to whom warrants were issued | director                       3  
Fair value of warrants issued                       $ 4,200  
Convertible Subordinated Debt | Member of Board of Directors                          
Related Party Transactions [Abstract]                          
Subordinated convertible notes issued               $ 800     $ 1,400 2,200 1,400
Interest expense (less than for 2019)                       200 100
Convertible Subordinated Debt | Executive Officer                          
Related Party Transactions [Abstract]                          
Subordinated convertible notes issued                     100   100
Interest expense (less than for 2019)                 $ 100 $ 100      
Convertible Subordinated Debt | Halo Acquisition | Executive Officer                          
Related Party Transactions [Abstract]                          
Subordinated convertible notes issued         $ 100                
Management Services | Member of Board of Directors                          
Related Party Transactions [Abstract]                          
Services provided by an entity                         200
Marketing Services | Member of Board of Directors                          
Related Party Transactions [Abstract]                          
Services provided by an entity                         200
Outstanding balance                     $ 100 $ 0 $ 100
Service contract termination clause                       30 days