Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Texas Capital Bank Revolver Loan - Additional Information (Details)

v3.20.4
Long-Term Debt - Texas Capital Bank Revolver Loan - Additional Information (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Sep. 30, 2020
USD ($)
Lease
Nov. 03, 2016
USD ($)
Debt Instrument [Line Items]        
Debt instrument, appraisal value of inventory maximum borrowing capacity Percentage     90.00%  
Debt instrument, Debt Instrument eligible receivables net of certain reserves Percentage     85.00%  
Debt instrument, appraisal value percentage 92.50% 90.00%    
Number of New Leases | Lease     25  
Texas Capital Bank Revolver Loan        
Debt Instrument [Line Items]        
Credit line maximum       $ 12,000,000
Credit line expiration period     5 years  
Debt periodic frequency     monthly  
Credit line maturity date     Nov. 03, 2023  
Debt instrument covenant, availability of debt to distribute dividend     $ 2,000,000  
Debt instrument covenant, availability of debt for no restriction on net income     $ 2,000,000  
Debt instrument, fixed charge coverage ratio     120.00%  
Texas Capital Bank Revolver Loan | Prepayments Covenant Compliance One        
Debt Instrument [Line Items]        
Debt instrument prepayment covenant excess availability of debt     $ 2,000,000  
Texas Capital Bank Revolver Loan | Prepayments Covenant Compliance Two        
Debt Instrument [Line Items]        
Debt instrument prepayment covenant excess availability of debt     $ 2,000,000  
Fixed charge coverage ratio     120.00%  
Texas Capital Bank Revolver Loan | Prepayments Covenant Compliance Three        
Debt Instrument [Line Items]        
Debt instrument prepayment covenant excess availability of debt     $ 2,000,000  
Texas Capital Bank Revolver Loan | Prepayments Covenant Compliance Three | Maximum        
Debt Instrument [Line Items]        
Fixed charge coverage ratio     120.00%