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Notes Payable (Details Narrative) $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 15, 2013 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2021 USD ($) | Apr. 16, 2020 USD ($) | Oct. 23, 2013 integer
Payroll costs description |  |  | Spend not less than 60% of loan proceeds on eligible payroll costs. |  |
Additional eligible payroll costs, percentage |  |  | 60.00% |  |
Forgiveness of debt |  | $ 903 |  |  |
SBA PPP loan [Member] |  |  |  |  |
Total SBA payroll protection program loan received |  |  |  | $ 900 |
Principal |  |  | $ 893 |  |
Accrued interest |  |  | $ 10 |  |
Sweetwater Bond loan [Member] |  |  |  |  |
Proceeds from Issuance of Long-term Debt | $ 34,000 |  |  |  |
Sweetwater Bond loan [Member] | Due Quarterly Commencing From January 1, 2014 [Member] |  |  |  |  |
Fixed interest rate (as a percent) |  |  |  |  | 5.75%
Sweetwater Bond loan [Member] | Due Quarterly Commencing From January 1, 2015 [Member] |  |  |  |  |
Number of installments | integer |  |  |  |  | 28

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