Annual report pursuant to Section 13 and 15(d)

Related Parties - Additional Information (Details)

v3.21.2
Related Parties - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2017
Sep. 30, 2021
Affiliated Entity      
Related Party Transaction [Line Items]      
Assumed debt $ 800    
Interest rate, percentage 4.00%    
Debt instrument, annual principal payment $ 100    
Affiliated Entity | Class B common stock      
Related Party Transaction [Line Items]      
Shares owned pledged as collateral 30,000 140,389  
Affiliated Entity | Class A common stock      
Related Party Transaction [Line Items]      
Shares owned pledged as collateral 7,500    
SunTx Capital Partners | Affiliated Entity      
Related Party Transaction [Line Items]      
Payment to related party     $ 270
Consideration Note Receivable      
Related Party Transaction [Line Items]      
Note receivable as consideration for sale of the wholly-owned subsidiary   $ 1,000  
Accounts Payable Note Receivable      
Related Party Transaction [Line Items]      
Note receivable as consideration for sale of the wholly-owned subsidiary   $ 1,000  
Other Current Assets | Consideration Note Receivable      
Related Party Transaction [Line Items]      
Note receivable as consideration for sale of the wholly-owned subsidiary     100
Other Current Assets | Accounts Payable Note Receivable      
Related Party Transaction [Line Items]      
Note receivable as consideration for sale of the wholly-owned subsidiary     100
Other Noncurrent Assets | Consideration Note Receivable      
Related Party Transaction [Line Items]      
Note receivable as consideration for sale of the wholly-owned subsidiary     400
Other Noncurrent Assets | Accounts Payable Note Receivable      
Related Party Transaction [Line Items]      
Note receivable as consideration for sale of the wholly-owned subsidiary     $ 200