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

Warrant derivative liability, Private placement (FY) (Details)

v3.20.4
Warrant derivative liability, Private placement (FY) (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
Jan. 03, 2020
Jan. 08, 2019
Dec. 12, 2018
Dec. 31, 2018
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2020
Jun. 24, 2020
Jun. 23, 2020
Jun. 01, 2020
Mar. 17, 2020
Nov. 30, 2018
Private Placement Offering [Abstract]                        
Units issued in private placement offering (in shares)     1,425,641                  
Number of shares issuable per unit (in shares)     0.50     1.1            
Unit price (in dollars per share)     $ 1.95                  
Gross proceeds from private placement offering     $ 2.8                  
Share issuance costs     0.1                  
Net proceeds from private placement offering   $ 0.1 $ 2.7 $ 2.6                
Shares issued in private placement offering (in shares)   25,641   1,400,000                
Warrants, exercise price (in dollars per share)               $ 4.25 $ 5.00      
Cash payable if warrants settled in cash           $ 1.1 $ 0.2          
Number of warrants issuable if settled (in shares)           1,259,498       1,041,666    
Subsequent Event [Member]                        
Private Placement Offering [Abstract]                        
Shares issued in private placement offering (in shares) 308,642                      
Warrant [Member]                        
Private Placement Offering [Abstract]                        
Number of shares issuable per unit (in shares)     0.5       2,560,883       1,003,232 0.5
Warrants, exercisable period           2 years   84 months        
Warrants, exercise price (in dollars per share)           $ 3.90   $ 1.25        
Number of warrants issuable if settled (in shares)               1,000,000        
Warrant [Member] | Subsequent Event [Member]                        
Private Placement Offering [Abstract]                        
Number of shares issuable per unit (in shares)                     1,003,232  
Warrants, exercise price (in dollars per share)                     $ 1.62  
Common Stock [Member]                        
Private Placement Offering [Abstract]                        
Number of shares issuable per unit (in shares)     1                 1
Net proceeds from private placement offering   $ 0.1   $ 2.6                
Shares issued in private placement offering (in shares)   25,641   1,400,000 308,642 0            
Number of warrants issuable if settled (in shares)           712,823 4,276,937