Quarterly report pursuant to Section 13 or 15(d)

Debt. (Details) - Schedule of long term debt

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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.