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

Related party transactions (FY) (Details)

v3.20.4
Related party transactions (FY) (Details)
$ in Thousands
3 Months Ended 8 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
shares
Sep. 30, 2020
USD ($)
shares
Sep. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Director
shares
Dec. 31, 2018
USD ($)
Member
shares
Jun. 30, 2020
USD ($)
Related Party Transactions [Abstract]              
Payment of finder's fee           $ 300  
Number of members who own entity | Member           1  
Subordinated convertible notes issued   $ 16,370 $ 18,240   $ 16,370 $ 0  
Warrants issued (in shares) | shares   17,414,030 6,125,339     0  
Shareholder Guaranty [Member]              
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     $ 4,200    
Subordinated Convertible Notes [Member] | Member of Board of Directors [Member]              
Related Party Transactions [Abstract]              
Subordinated convertible notes issued   1,400     1,400   $ 800
Subordinated Convertible Notes [Member] | Maximum [Member] | Member of Board of Directors [Member]              
Related Party Transactions [Abstract]              
Interest amount   100     100    
Subordinated Convertible Notes [Member] | Halo Acquisition [Member] | Executive Officer [Member]              
Related Party Transactions [Abstract]              
Subordinated convertible notes issued   100     100    
Subordinated convertible notes   100     100    
Management Services [Member] | Maximum [Member] | Member of Board of Directors [Member]              
Related Party Transactions [Abstract]              
Payments to related parties         200 $ 500  
Marketing Services [Member] | Member of Board of Directors [Member]              
Related Party Transactions [Abstract]              
Payments to related parties $ 100     $ 200 200 100  
Outstanding balances due to related party   100 $ 0   $ 100    
Service contract termination clause         30 days    
Marketing Services [Member] | Maximum [Member] | Member of Board of Directors [Member]              
Related Party Transactions [Abstract]              
Outstanding balances due to related party   $ 100     $ 100 100  
Other Professional Services [Member]              
Related Party Transactions [Abstract]              
Payments to related parties           400  
Other Professional Services [Member] | Maximum [Member]              
Related Party Transactions [Abstract]              
Payments to related parties           $ 100