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Borrowings - DB Credit Facility (Details) - USD ($)
$ in Thousands
 12 Months Ended 27 Months Ended
Oct. 31, 2023
Jun. 29, 2023
Mar. 25, 2021
Mar. 24, 2021
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Jun. 29, 2023
Line of Credit Facility [Line Items]                    
Amortization of financing costs         $ 6,780 $ 6,837 $ 7,388      
DB Credit Facility                    
Line of Credit Facility [Line Items]                    
Credit facility outstanding balance         186,400 186,400        
Revolving Credit Facility | DB Credit Facility                    
Line of Credit Facility [Line Items]                    
Credit facility outstanding balance             244,000      
Revolving Credit Facility | DB Credit Facility | Credit Facility                    
Line of Credit Facility [Line Items]                    
Maximum amount of borrowings available         280,000          
Agent fee percentage 0.20% 0.25%                
Interest expense         14,964 9,816 5,985      
Non-usage fee         466 355 362      
Amortization of financing costs         $ 1,113 $ 1,082 $ 981      
Weighted average interest rate         7.90% 4.70% 2.90%      
Effective interest rate         8.90% 5.40% 3.50%      
Average debt outstanding         $ 186,422 $ 209,898 $ 209,307 $ 233,649 $ 113,967  
Revolving Credit Facility | DB Credit Facility | Credit Facility | Lender Cost Of Funds Rate                    
Line of Credit Facility [Line Items]                    
Interest rate margin 2.55% 2.61% 2.35% 2.60%            
Annual increase in interest rate margin after revolving period 0.20%     0.20%            
Increase in interest rate margin during an event of default 2.00%     2.00%           2.00%
Revolving Credit Facility | DB Credit Facility | Credit Facility | Base Rate | Lender Cost Of Funds Rate                    
Line of Credit Facility [Line Items]                    
Interest rate margin   0.50%