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

Intangible assets, royalties, and goodwill - Additional information (FY) (Details)

v3.21.1
Intangible assets, royalties, and goodwill - Additional information (FY) (Details) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 13, 2020
Apr. 30, 2019
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Nov. 30, 2020
Sep. 30, 2020
Jul. 20, 2020
Jun. 30, 2020
Jun. 24, 2020
Mar. 17, 2020
Dec. 19, 2019
Nov. 04, 2019
Finite-Lived Intangible Assets [Line Items]                            
Common stock, shares issued (in shares)     66,004,348   51,908,398 47,977,390                
Warrant term             72 months       84 months   24 months 24 months
Warrants, exercise price (in dollars per share)             $ 1.00 $ 0.65 $ 1.05 $ 0.75 $ 1.25 $ 1.62 $ 5.00 $ 5.00
Contract termination costs         $ (649,000) $ 0                
Amortization expense (less than for 2019)     $ 400,000 $ 400,000 1,500,000 100,000                
Goodwill     18,614,000   18,614,000 18,614,000                
Goodwill, accumulated impairment loss     0   0 0                
Goodwill, impairment expense     $ 0 $ 0 $ 0 $ 0                
ABG Notes                            
Finite-Lived Intangible Assets [Line Items]                            
Debt face amount $ 600,000                          
Interest rate per annum 10.00%   10.00%   10.00%                  
Halo Acquisition                            
Finite-Lived Intangible Assets [Line Items]                            
Goodwill                         $ 18,614,000  
Licensing arrangement                            
Finite-Lived Intangible Assets [Line Items]                            
Payment of upfront fees in equity   $ 1,000,000                        
Termination fee paid $ 100,000                          
Common stock, shares issued (in shares) 72,720                          
Termination fee payable $ 100,000                          
Common stock purchase warrant issuable 150,000                          
Contract termination costs 1,100,000                          
Licensing arrangement | ABG Notes                            
Finite-Lived Intangible Assets [Line Items]                            
Debt face amount $ 600,000                          
Interest rate per annum 10.00%                          
Fair value of debt $ 600,000                          
Licensing arrangement | ABG Warrants                            
Finite-Lived Intangible Assets [Line Items]                            
Warrant term 24 months                          
Warrants, exercise price (in dollars per share) $ 5.00                   $ 4.25      
Warrants, fair value (less than) $ 100,000