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Liability Related to the Sale of Future Proceeds from Disposition of Subsidiary (Tables)
 3 Months Ended
Mar. 31, 2022
Liability Related To Sale Of Future Proceeds From Disposition Of Subsidiary [Abstract]  
Schedule of activity within the liability account
   March 31,
2022		   December 31,
2021		 
   (unaudited)     
Liabilities related to sale of future proceeds from disposition of subsidiaries - beginning balance  $59,000   $322,000 
Non-Cash other income recognized   (89,000)   (360,000)
Non-Cash interest expense recognized   38,000    97,000 
Liabilities related to sale of future proceeds from disposition of subsidiary - ending balance   8,000    59,000 
Less: unamortized transaction costs   (3,000)   (3,000)
Liability related to sale of future proceeds from disposition of subsidiary, net  $5,000   $56,000