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Debt (Tables)
 3 Months Ended
Mar. 31, 2021
Debt Disclosure [Abstract]  
Schedule of Carrying Value of Debt
The Company’s carrying value of debt consisted of the following (in thousands):
March 31,
2021		December 31,
2020
Unsecured promissory note$1,080 $1,080 
Secured term note payable - related party
1,077 1,077 
Secured promissory note - related party
4,438 5,000 
Insurance and other notes payable
418 714 
Less: amounts due within one year
(4,253)(4,463)
Total long-term debt
$2,760 $3,408 
Schedule Of Interest Expense On Debt
During the three months ended March 31, 2021 and 2020, the Company recorded interest expense on debt as follows (in thousands):
March 31,
2021		March 31,
2020
Unsecured promissory note$— $— 
Secured term note payable - related party
10 25 
Secured promissory note - related party
154 215 
Insurance and other notes payable
14 11 
Total interest expense$178 $251