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

Warrants - Fair value of warrant liabilities (FY) (Details)

v3.21.1
Warrants - Fair value of warrant liabilities (FY) (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 8 Months Ended 12 Months Ended
Jun. 24, 2020
May 06, 2019
Oct. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Class of Warrant or Right [Line Items]                
Assumption of warrants in May Acquisitions   $ 2,130            
Change in fair value of warrant derivative liability       $ 0   $ 90 $ (2,220) $ 90
Change in fair value of warrant liability $ 100     6,483 $ (1,379)   24,898 0
Warrant derivative liability       0   $ 2,220 0 $ 2,220
Series F Warrants                
Class of Warrant or Right [Line Items]                
Issuance of Series F warrants     $ 14,952          
Change in fair value of warrant liability       $ 6,483     24,898  
Warrant derivative liability             $ 39,850