Secured Note Payable (Details Narrative) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Mar. 27, 2018
Interest expense	$ 13	$ 43
Secured Note [Member]
Repayments of notes payable	72	72
Interest expense	11	$ 16
Secured Promissory Note Agreement [Member] \| Tech Capital, LLC [Member]
Principal amount of secured note payable	$ 500		$ 1,200
Maturity date	Apr. 01, 2023
Debt interest rate	8.00%
Debt instrument, maturity date, description	Principal and interest payments are due on the first day of each month commencing on May 1, 2018.

Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

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Amount of the cost of borrowed funds accounted for as interest expense.

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The cash outflow for a borrowing supported by a written promise to pay an obligation.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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