Annual report pursuant to Section 13 and 15(d)

Credit Facility (Details)

v3.20.4
Credit Facility (Details) - Credit Facility - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Nov. 05, 2017
Credit Facility      
Maximum borrowing capacity     $ 20
Interest rate 2.50%    
Interest rate margin (as a percent) 1.75%    
Borrowings outstanding $ 0 $ 0  
Interest expense $ 100,000 $ 100,000