Annual report pursuant to Section 13 and 15(d)

Investments - Schedule of Fair Value Portfolio of Investments by Geographic Location (Details)

v3.22.4
Investments - Schedule of Fair Value Portfolio of Investments by Geographic Location (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Schedule Of Investments [Line Items]    
Investments at Fair Value $ 2,963,955 $ 2,434,522
United States    
Schedule Of Investments [Line Items]    
Investments at Fair Value 2,670,520 2,138,184
United Kingdom    
Schedule Of Investments [Line Items]    
Investments at Fair Value 171,629 169,407
Netherlands    
Schedule Of Investments [Line Items]    
Investments at Fair Value 88,915 82,925
Canada    
Schedule Of Investments [Line Items]    
Investments at Fair Value 19,472 27,673
Israel    
Schedule Of Investments [Line Items]    
Investments at Fair Value 9,052 8,980
Ireland    
Schedule Of Investments [Line Items]    
Investments at Fair Value 2,804 5,459
Germany    
Schedule Of Investments [Line Items]    
Investments at Fair Value 990 1,894
Other    
Schedule Of Investments [Line Items]    
Investments at Fair Value $ 573 $ 0
Geographic Concentration Risk [Member] | Revenue Benchmark [Member]    
Schedule Of Investments [Line Items]    
Percentage of Total portfolio 100.00% 100.00%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | United States    
Schedule Of Investments [Line Items]    
Percentage of Total portfolio 90.10% 87.80%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | United Kingdom    
Schedule Of Investments [Line Items]    
Percentage of Total portfolio 5.80% 7.00%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | Netherlands    
Schedule Of Investments [Line Items]    
Percentage of Total portfolio 3.00% 3.40%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | Canada    
Schedule Of Investments [Line Items]    
Percentage of Total portfolio 0.70% 1.10%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | Israel    
Schedule Of Investments [Line Items]    
Percentage of Total portfolio 0.30% 0.40%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | Ireland    
Schedule Of Investments [Line Items]    
Percentage of Total portfolio 0.10% 0.20%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | Germany    
Schedule Of Investments [Line Items]    
Percentage of Total portfolio 0.00% 0.10%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | Other    
Schedule Of Investments [Line Items]    
Percentage of Total portfolio 0.00% 0.00%