Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Operating Leases (Details)

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Commitments and Contingencies - Operating Leases (Details) - USD ($)
1 Months Ended 12 Months Ended
Jul. 31, 2018
Dec. 31, 2021
Dec. 31, 2020
Commitments and Contingencies      
Lease Expiration Date Oct. 31, 2020    
Operating Leases, Rent Expense   $ 236,000 $ 332,000
Annual minimum lease payments for operating lease      
Year ending December 31, 2022   153,000  
Year ending December 31, 2023   173,000  
Year ending December 31, 2024   $ 15,000