v3.26.1
Our Portfolio - Schedule of Carrying Value, Expected Loan Funding Commitments, and Allowance by Type of Receivable (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]          
Gross Carrying Value $ 3,201,000   $ 3,201,000   $ 3,342,000
Loan Funding Commitments 274,000   274,000   388,000
Allowance 56,000   56,000   62,000
Loans 3,145,473   3,145,473   3,280,046
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Balance at beginning of period     62,000    
Provision for loss on receivables (11,000)        
Balance at end of period 56,000   56,000    
Commercial          
Financing Receivable, Credit Quality Indicator [Line Items]          
Gross Carrying Value 3,171,000   3,171,000   3,311,000
Loan Funding Commitments 274,000   274,000   388,000
Allowance 56,000 $ 55,000 56,000 $ 55,000 62,000
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Balance at beginning of period 67,000 54,000 62,000 50,000  
Provision for loss on receivables (11,000) 1,000 (6,000) 5,000  
Balance at end of period 56,000 55,000 56,000 55,000  
Commercial | 1          
Financing Receivable, Credit Quality Indicator [Line Items]          
Gross Carrying Value 3,140,000   3,140,000   3,281,000
Allowance 50,000   50,000   58,000
Loans 3,090,000   3,090,000   3,223,000
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Balance at beginning of period     58,000    
Balance at end of period 50,000   50,000    
Government receivables          
Financing Receivable, Credit Quality Indicator [Line Items]          
Gross Carrying Value 30,000   30,000   31,000
Loan Funding Commitments 0   0   0
Allowance 0 0 0 0 0
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Balance at beginning of period 0 0 0 0  
Provision for loss on receivables 0 0 0 0  
Balance at end of period 0 $ 0 0 $ 0  
Government receivables | 1          
Financing Receivable, Credit Quality Indicator [Line Items]          
Gross Carrying Value 30,000   30,000   31,000
Allowance 0   0   0
Loans 30,000   30,000   $ 31,000
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Balance at beginning of period     0    
Balance at end of period 0   0    
Residential Solar Loan          
Financing Receivable, Credit Quality Indicator [Line Items]          
Loans 1,600,000   1,600,000    
U.S. Federal Government          
Financing Receivable, Credit Quality Indicator [Line Items]          
Loans 4,000   4,000    
State or local governments          
Financing Receivable, Credit Quality Indicator [Line Items]          
Loans $ 26,000   $ 26,000