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Summary of Significant Accounting Policies - Additional Information (Details)
6 Months Ended 12 Months Ended
Dec. 31, 2021
USD ($)
reporting_unit
Jul. 09, 2021
USD ($)
Dec. 31, 2021
USD ($)
segment
Dec. 31, 2020
USD ($)
Noncontrolling Interest [Line Items]        
Number of operating segments | segment     1  
Number of reportable segments | segment     1  
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Participation interest in loan pool 5.00%   5.00%  
Nonaccrual loans, threshold for impairment evaluation $ 50,000   $ 50,000  
Troubled debt restructuring receivables, threshold for impairment evaluation $ 50,000   50,000  
Number of reporting units | reporting_unit 1      
Goodwill impairment $ (224,701,000) $ 0   $ 0
Funding commitments $ 22,749,000   $ 22,749,000 18,386,000
Distributions       $ 7,522,000
Sunlight Financial LLC        
Noncontrolling Interest [Line Items]        
Noncontrolling interest percent 35.00% 34.90% 35.00%  
Residential solar loans        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Participation interest in loan pool 5.00%   5.00% 5.00%