Quarterly report [Sections 13 or 15(d)]

Our Portfolio - Schedule of the Carrying Value and Allowance by Type of Receivable or "Portfolio Segment" (Details)

v3.25.1
Our Portfolio - Schedule of the Carrying Value and Allowance by Type of Receivable or "Portfolio Segment" (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]      
Gross Carrying Value $ 3,015,000   $ 2,946,000
Loan Funding Commitments 418,000   545,000
Allowance 54,000   50,000
Loans 2,961,388   2,895,837
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 50,000    
Ending balance 54,000    
Commercial      
Financing Receivable, Credit Quality Indicator [Line Items]      
Gross Carrying Value 2,982,000   2,911,000
Loan Funding Commitments 418,000   545,000
Allowance 54,000 $ 52,000 50,000
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 50,000 50,000  
Provision for loss on receivables 4,000 2,000  
Ending balance 54,000 52,000  
Commercial | 1      
Financing Receivable, Credit Quality Indicator [Line Items]      
Gross Carrying Value 2,982,000    
Allowance 54,000    
Loans 2,928,000    
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Ending balance 54,000    
Government      
Financing Receivable, Credit Quality Indicator [Line Items]      
Gross Carrying Value 33,000   35,000
Loan Funding Commitments 0   0
Allowance 0 0 $ 0
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 0 0  
Provision for loss on receivables 0 0  
Ending balance 0 $ 0  
Government | 1      
Financing Receivable, Credit Quality Indicator [Line Items]      
Gross Carrying Value 33,000    
Allowance 0    
Loans 33,000    
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Ending balance 0    
Residential Solar Loan      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans 1,500,000    
U.S. federal government      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans 6,000    
State or local governments      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans $ 27,000