SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accounting Policies [Abstract]
Interest income	$ 75,023	$ 50,468	$ 198,446	$ 139,882
Dividend income	19,424	23,012	53,959	59,328
Fee income	3,940	3,299	10,576	7,671
Total interest, fee and dividend income	$ 98,387	$ 76,779	$ 262,981	$ 206,881