Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details)

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Stockholders' Equity (Details) - USD ($)
 1 Months Ended 2 Months Ended 3 Months Ended 9 Months Ended
Aug. 31, 2021
Aug. 09, 2021
Aug. 31, 2021
Sep. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Nov. 30, 2019
Class of Stock [Line Items]                    
Stock repurchase program, authorized amount                   $ 5,000,000
Share repurchases         $ 0 $ 0 $ 0 $ 0    
Economic interest percentage             78.50%      
Proceeds from issuance of Class A common stock, net of costs             $ 29,539,000 $ 0    
Number of securities called by each warrant (in shares)   0.6                
Proceeds from offering, gross   $ 31,900,000                
Proceeds from offering, net   $ 29,900,000                
Conversion of Class C common stock         $ 0          
Shares issued upon conversion, ratio 33.33%                  
Pre-Funded Warrants                    
Class of Stock [Line Items]                    
Number of common shares called by warrants (in shares)   5,926,583                
Warrant exercise price (in dollars per share)   $ 0.01                
Standard Warrants                    
Class of Stock [Line Items]                    
Number of common shares called by warrants (in shares)   6,075,950                
Warrant exercise price (in dollars per share)   $ 3.55                
Warrants outstanding, term   5 years                
ATM Program                    
Class of Stock [Line Items]                    
Proceeds from issuance of Class A common stock, net of costs       $ 200,000            
Non-controlling interest holders                    
Class of Stock [Line Items]                    
Economic interest percentage             21.50%      
Class A Common Stock                    
Class of Stock [Line Items]                    
Shares issued in transaction (in shares)   4,200,000                
Common stock, par value (in dollars per share)       $ 0.01 $ 0.01   $ 0.01   $ 0.01  
Class A Common Stock | Warrant                    
Class of Stock [Line Items]                    
Warrants exercised (in shares)         5,926,583          
Warrants exercised         $ 100,000          
Class A Common Stock | ATM Program                    
Class of Stock [Line Items]                    
Sale of stock, consideration received on transaction     $ 50,000,000              
Shares issued in transaction (in shares)       54,278