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Convertible Notes Payable (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Feb. 16, 2021 | Jan. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Jun. 23, 2020
Short-term Debt [Line Items] |  |  |  |  |
Debt Conversion, Converted Instrument, Amount | $ 38,800 |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued | 11,413,322 |  |  |  |
Accrued Liabilities, Current |  |  | $ 1,901 | $ 1,296 |
Debt Instrument, Unamortized Discount |  |  |  | 4,519 |
Common Stock [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Common Stock, Shares Subscribed but Unissued |  |  | 327,298 |  |
Notes Payables Issued For Cash [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Debt Instrument, Interest Rate During Period |  |  | 10.00% |  |
Debt Instrument, Convertible, Conversion Price |  |  | $ 3.40 |  |
[custom:BeneficialOwnershipLimit-0] |  |  | 4.99% |  |
Notes Payable, Current |  |  |  | 24,100 |
Debt Conversion, Converted Instrument, Amount |  | $ 1,200 |  |  |
Notes Payables Issued For Cash [Member] | January 2021 [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Debt Instrument, Convertible, Conversion Price | $ 3.40 |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued | 7,438,235 |  |  |  |
Notes Payable Issued For Settlement Agreements [Member] | Fiscal 2019 and 2020 [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Debt Instrument, Interest Rate During Period |  |  | 10.00% |  |
Debt Instrument, Convertible, Conversion Price | $ 3.40 |  | $ 3.40 |  |
[custom:BeneficialOwnershipLimit-0] |  |  | 4.99% |  |
Notes Payable, Current |  |  |  | 2,500 |
Debt Conversion, Converted Instrument, Shares Issued | 743,529 |  |  |  |
Notes Payable Issued For Forbearance Agreements [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Debt Instrument, Convertible, Conversion Price | $ 3.40 |  |  |  |
Notes Payable, Current |  |  |  | 3,800 |
Debt Conversion, Converted Instrument, Shares Issued | 1,132,059 |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 13,200
Notes Payable |  |  |  |  | $ 15,000
Notes Payable Issued For Consulting Agreement [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Debt Instrument, Interest Rate During Period |  |  | 10.00% |  |
Debt Instrument, Convertible, Conversion Price | $ 3.40 |  | $ 3.40 |  |
[custom:BeneficialOwnershipLimit-0] |  |  | 4.99% |  |
Notes Payable, Current | $ 33,300 |  |  | 400 |
Debt Conversion, Converted Instrument, Amount |  |  |  | 4,800 |
Debt Conversion, Converted Instrument, Shares Issued | 1,627,440 |  |  |  |
Accrued Liabilities, Current | $ 5,500 |  | $ 700 |  |
Notes Payable Issued For Consulting Agreement [Member] | Common Stock [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued | 472,059 |  |  |  |
Notes Payable Issued For Consulting Agreement [Member] | January 2021 [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Debt Conversion, Converted Instrument, Amount | $ 38,800 |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued | 11,413,322 |  |  |  |
Notes payable issued exchange for consulting service |  | $ 700 |  |  |
Accrued Liabilities, Current | $ 5,500 |  |  | 500 |
Notes Payable Issued For Consulting Agreement [Member] | Fiscal 2019 and 2020 [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Debt Conversion, Converted Instrument, Amount | $ 1,600 |  |  |  |
Adoption of ASU 2020-06 [Member] | During 2020 [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Debt Instrument, Convertible, Beneficial Conversion Feature |  |  | 4,700 |  |
Debt Instrument, Unamortized Discount |  |  |  | $ 4,500 |
[custom:InterestExpenseDueAmortizationOfDebtDiscount-0] |  |  | 200 |  |
Adoption of ASU 2020-06 [Member] | January 1, 2021 [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Debt Instrument, Convertible, Beneficial Conversion Feature |  |  | 4,700 |  |
Debt Instrument, Unamortized Discount |  |  | $ 4,500 |  |

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