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Equity - Consultant Stock Plan (Details) - USD ($)
 3 Months Ended 12 Months Ended 17 Months Ended 21 Months Ended
Dec. 31, 2018
Aug. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Sep. 30, 2019
Share-based compensation            
Shares issued for services, $3.50 (in dollars per share)     $ 1.03 $ 1.44    
Fair value of stock options issued for board service     $ 137,000      
Consultant Plan [Member]            
Share-based compensation            
Number of common stock reserved for issuance     190,142   190,142  
Maximum increase in available number of authorized shares as a percentage of new shares issued     1.00%      
Shares issued for services (in shares)     7,500      
Shares issued for services, $3.50 (in dollars per share)     $ 3.50 $ 3.50    
Shares issued for services ($3.50 per share)       $ 26,000    
Fair value of stock options issued for board service (in shares)         10,000  
Shares issued for services, $1.44 (in dollars per share)     $ 1.44      
Fair value of stock options issued for board service     $ 14,000      
Compensation expense     $ 14,000 $ 30,000    
Consultant Plan [Member] | Consultant, Two            
Share-based compensation            
Shares issued for services (in shares)   10,000        
Shares issued for services $1.03 (in dollars per share)     $ 1.03      
Fair value of stock options $1.03 issued for board service     $ 10,000      
Consultant Plan [Member] | General and administrative            
Share-based compensation            
Shares expensed in period 2,500          
Compensation expense $ 4,000         $ 10,000