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

Warrant derivative liability, Fair value of derivative liabilities (FY) (Details)

v3.20.4
Warrant derivative liability, Fair value of derivative liabilities (FY) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Warrant Liability [Abstract]              
Assumption of warrants in May Acquisitions           $ 2,130  
Change in fair value of warrant derivative liability $ (4,213) $ 3,474 $ (1,379) $ (2,118) $ (886) 90 $ 0
Balance as of period end $ 102 $ 4,315 $ 841 $ 102   $ 2,220 $ 0