Quarterly report pursuant to Section 13 or 15(d)

Unsecured Convertible Promissory Notes Payable (Details Narrative)

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Unsecured Convertible Promissory Notes Payable (Details Narrative) - Unsecured Debt [Member] - September 2020 Notes [Member] - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Sep. 15, 2020
Mar. 31, 2021
Mar. 31, 2020
Debt instrument, face amount $ 10,000    
Debt maturity date Sep. 15, 2023    
Accrued interest rate 10.00%    
Debt conversion description We have the right to prepay the September 2020 Notes at any time after the 13 month anniversary of the closing date after providing written notice to the Lenders, and may prepay the September 2020 Notes prior to such time with the consent of the Lenders. The Lenders have the right, at any time, and from time to time, on and after the 13-month anniversary of the closing date to convert up to an aggregate of $3.0 million of the September 2020 Notes into common stock of the Company at a conversion price of $3.00 per share. Repayment of the Notes has been guaranteed by our wholly-owned subsidiary, PMI.    
Debt convertible to common stock $ 3,000    
Debt conversion price per share $ 3.00    
Interest expense   $ 251 $ 0