Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v3.21.2
Debt (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Apr. 29, 2021
Mar. 18, 2021
Mar. 31, 2019
Jul. 31, 2020
Mar. 31, 2019
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Jan. 29, 2021
Apr. 30, 2020
Long-Term Debt (Details) [Line Items]                            
Unrestricted cash on deposit           $ 194,226,000       $ 194,226,000   $ 377,581,000    
Leverage loans receivable           13,408,000       13,408,000   13,408,000    
Gain on forgiveness of debt           0     $ 0 2,604,000 $ 0      
Interest expense           $ 246,000     $ 334,000 $ 668,000 $ 1,431,000      
LIBOR Market Index Rate [Member]                            
Long-Term Debt (Details) [Line Items]                            
Interest rate           0.09%       0.09%        
2019 Term Loan [Member]                            
Long-Term Debt (Details) [Line Items]                            
Maturity date     Oct. 13, 2023   Oct. 13, 2023                  
Aggregate principal amount     $ 30,000,000   $ 30,000,000                  
Principle payment     375,000                      
Interest rate formula, description       the applicable margin in the interest rate formula (formerly calculated as the greater of (a) 2.25% or (b) three month LIBOR, plus 4.5%) changed from 4.5% to a five-level tiered amount ranging from 4.5% if the consolidated senior leverage ratio, as defined in the 2019 Term Loan, was less than 1.5, to as high as 6.35% if the consolidated senior leverage ratio was greater than 2.25. When the amendment was executed, the applicable margin was 6.35%.                    
Prepaid total amount                         $ 27,700,000  
Outstanding principal amount                         27,000,000.0  
Prepayment fee                         500,000  
Accrued unpaid interest                         $ 200,000  
Debt instrument, basis spread on variable rate       2.25%                    
2019 Subordinated Term Loan [Member]                            
Long-Term Debt (Details) [Line Items]                            
Subordinated term loan     $ 10,000,000   $ 10,000,000                  
Interest rate basis         The base interest rate is the “Prime Rate” as quoted by the Wall Street Journal (adjusted each calendar quarter; 3.25% at December 31, 2020) plus 2.75%. We have the option to pay up to two percent (2%) in any interest payable in any fiscal quarter by adding such interest payment to the principal balance of the related note (“PIK Interest”).                  
Debt base rate             3.25%              
Additional principal amount                       $ 200,000    
Option to pay interest payable               2.00%            
2019 Subordinated Term Loan [Member] | Prime Rate [Member]                            
Long-Term Debt (Details) [Line Items]                            
Debt instrument, basis spread on variable rate   2.00%     2.75%                  
Paycheck Protection Program loan [Member]                            
Long-Term Debt (Details) [Line Items]                            
Aggregate principal amount                           $ 1,800,000
Interest rate                           1.00%
Escrow deposit                           $ 1,800,000
Gain on forgiveness of debt             $ 1,800,000              
Gain on Debt Instrument             $ 1,800,000              
Revolving Loans [Member]                            
Long-Term Debt (Details) [Line Items]                            
Debt instrument, basis spread on variable rate 1.00%                          
Revolving Loans [Member] | Base Rate [Member]                            
Long-Term Debt (Details) [Line Items]                            
Debt instrument, basis spread on variable rate 1.50%                          
Revolving Loans [Member] | LIBOR Market Index Rate [Member]                            
Long-Term Debt (Details) [Line Items]                            
Debt instrument, basis spread on variable rate 2.50%                          
Equipment Loans [Member] | Base Rate [Member]                            
Long-Term Debt (Details) [Line Items]                            
Debt instrument, basis spread on variable rate 1.75%                          
Equipment Loans [Member] | LIBOR Market Index Rate [Member]                            
Long-Term Debt (Details) [Line Items]                            
Debt instrument, basis spread on variable rate 2.75%                          
LIMR Loan [Member]                            
Long-Term Debt (Details) [Line Items]                            
Debt instrument, basis spread on variable rate 2.00%                          
Minimum [Member] | 2019 Term Loan [Member] | Three Month LIBOR [Member]                            
Long-Term Debt (Details) [Line Items]                            
Debt instrument, basis spread on variable rate       4.50%                    
Minimum [Member] | 2019 Subordinated Term Loan [Member]                            
Long-Term Debt (Details) [Line Items]                            
Unrestricted cash on deposit   $ 10,000,000                        
Maximum [Member]                            
Long-Term Debt (Details) [Line Items]                            
Claim Percentage Against Federal Income Taxes Of Qualified Investment                   39.00%        
Maximum [Member] | 2019 Term Loan [Member] | Three Month LIBOR [Member]                            
Long-Term Debt (Details) [Line Items]                            
Debt instrument, basis spread on variable rate       6.35%                    
Asset Backed Lending Arrangement [Member]                            
Long-Term Debt (Details) [Line Items]                            
Interest rate basis a base rate (as defined in the Credit Agreement) plus an applicable margin of 1.50% for revolving loans and 1.75% for equipment loans, or a LIBOR market index rate (“LMIR”) (as defined in the Credit Agreement) plus an applicable margin of 2.50% for revolving loans and 2.75% for equipment loans. If we maintain a trailing twelve month consolidated fixed charge coverage ratio (as defined in the Credit Agreement) of 1.1:1.0 or better and no event of default exists, then the applicable margins for base rate revolving loans and LMIR rate loans are 1.00% and 2.00%, respectively.                          
Truist bank [Member]                            
Long-Term Debt (Details) [Line Items]                            
Debt Instrument, Maturity Date Apr. 29, 2026                          
Truist bank [Member] | Asset Backed Lending Arrangement [Member]                            
Long-Term Debt (Details) [Line Items]                            
Line of Credit Facility $ 20,000,000.0                          
Truist bank [Member] | Capital Expenditure line [Member]                            
Long-Term Debt (Details) [Line Items]                            
Line of Credit Facility $ 1,000,000.0