Annual report pursuant to Section 13 and 15(d)

General Commitments (Narrative) (Details)

v3.20.1
General Commitments (Narrative) (Details) - USD ($)
Aug. 02, 2018
Dec. 31, 2019
Other Commitments [Line Items]    
Sale of building, purchase agreement, consideration amount $ 10,000,000  
Purchase agreement, buyer to complete due diligence, period 180 days  
Restricted cash   $ 679,006
Purchase Agreement [Member]    
Other Commitments [Line Items]    
Restricted cash   $ 175,000