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New Market Tax Credit (Details) - USD ($)
9 Months Ended
Oct. 24, 2019
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Line of Credit Facility [Line Items]        
Due to related parties   $ 0   $ 0
Amortization of debt issuance costs   31,000 $ 31,000  
Subsidiary        
Line of Credit Facility [Line Items]        
Due to related parties $ 22,500,000      
Investor        
Line of Credit Facility [Line Items]        
Loans receivable $ 15,900,000      
Loans receivable, term 25 years      
Loans receivable, interest rate 1.00%      
Proceeds from debt $ 15,900,000      
Interest from counterparty 6,300,000      
Debt issuance costs 300,000      
Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Credit facility maximum borrowings $ 23,000,000 $ 30,000,000