XML 52 R41.htm IDEA: XBRL DOCUMENT v3.20.4
Long Term Debt - Texas Capital Bank Revolver Loan - Additional Information (Details) - Texas Capital Bank Revolver Loan - USD ($)
3 Months Ended
Dec. 31, 2020
Nov. 03, 2016
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