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Liability Related to the Sale of Future Proceeds from Disposition of Subsidiary (Tables)
 12 Months Ended
Dec. 31, 2020
Proceeds as liability amount  
Schedule of activity within the liability account
   December 31,
2020		   December 31,
2019		 
Cash received from sale of future proceeds from disposition of subsidiary  $-   $800,000 
Liabilities related to sale of future proceeds from disposition of subsidiary – beginning balance   602,000    - 
Non-Cash other income recognized   (402,000)   (282,000)
Non-Cash interest expense recognized   122,000    84,000 
Liabilities related to sale of future proceeds from disposition of subsidiary – ending balance   322,000    602,000 
Less: unamortized transaction costs   (3,000)   (3,000)
Liability related to sale of future proceeds from disposition of subsidiary, net  $319,000   $599,000