Quarterly report pursuant to Section 13 or 15(d)

Long-term Debt - Narrative (Details)

v3.20.2
Long-term Debt - Narrative (Details)
 3 Months Ended 9 Months Ended
Jan. 01, 2019
USD ($)
Dec. 20, 2018
USD ($)
debt_installment
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Sep. 30, 2020
USD ($)
Dec. 19, 2018
USD ($)
Line of Credit Facility [Line Items]            
Repayments of debt, number of consecutive installments | debt_installment   60        
Extraordinary expenses     $ 636,000      
Palmer of Texas            
Line of Credit Facility [Line Items]            
Asset impairments         $ 6,000,000.0  
Losses from suspended operations     740,000 $ 1,560,000    
$100 million Revolving line of credit, due December 20, 2021            
Line of Credit Facility [Line Items]            
Principal amount of debt   $ 100,000,000        
$20 million Term loan, due February 1, 2024            
Line of Credit Facility [Line Items]            
Debt term 5 years 5 years        
Principal amount of debt $ 20,000,000 $ 20,000,000        
$20 million Term loan, due February 1, 2024 | London Interbank Offered Rate (LIBOR)            
Line of Credit Facility [Line Items]            
Basis spread   1.90%        
Revolving Credit Facility            
Line of Credit Facility [Line Items]            
Minimum fixed charge coverage ratio         1.25  
Covenants, minimum tangible net worth     60,000,000.0   $ 60,000,000.0  
Minimum fixed charge coverage ratio actual         1.47  
Covenants, minimum tangible net worth actual     67,700,000   $ 67,700,000  
Revolving Credit Facility | $100 million Revolving line of credit, due December 20, 2021            
Line of Credit Facility [Line Items]            
Maximum borrowing capacity   $ 100,000,000       $ 80,000,000
Remaining borrowing capacity     $ 7,500,000   $ 7,500,000  
Revolving Credit Facility | $100 million Revolving line of credit, due December 20, 2021 | London Interbank Offered Rate (LIBOR)            
Line of Credit Facility [Line Items]            
Basis spread   1.65%