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Debt. (Details) - Schedule of long term debt - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Debt Instrument [Line Items] |  |  |
Term debt | $ 80,578 | $ 97,869 |
Less unamortized debt premium |  | 230 |
Less unamortized debt financing costs | (70) | (759) |
Less short-term portion | (23,660) | (25,533) |
Long-term debt | 56,848 | 71,807 | [1]
Kinergy line of credit [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Term debt | 56,918 | 32,512 |
Pekin revolving loan [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Term debt | 7,580 | 20,580 |
ICP revolving loan [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Term debt | 9,384 | 9,384 |
Parent notes payable [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Term debt | 723 | 25,533 |
CARES Act loans [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Term debt | $ 5,973 | $ 9,860 |
[1] | Amounts derived from the audited consolidated financial statements for the year ended December 31, 2020.

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