COMMITMENTS AND CONTINGENCIES - Commitments to Fund (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Total commitments	$ 2,910,504	$ 2,662,853
Less: funded commitments	(2,625,448)	(2,429,112)
Total unfunded commitments	$ 285,056	$ 233,741