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

Nature of business and summary of significant accounting policies - Restricted Cash (Q3) (Details)

v3.20.4
Nature of business and summary of significant accounting policies - Restricted Cash (Q3) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Restricted Cash [Abstract]        
Restricted cash (less than for 2020)     $ 200 $ 0
Escrow funds - prepayment for preferred stock issuance $ 1,518 $ 0    
Credit card        
Restricted Cash [Abstract]        
Restricted cash (less than for 2020) $ 100   $ 200