Class N Redeemable Common Stock - Schedule of Redeemable Common Stock (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Class of Stock [Line Items]
Stock repurchased during period (in shares)	258,624	401,116
Class N Redeemable Common Stock repurchased	$ 7,363	$ 13,025
Class N Common Stock
Class of Stock [Line Items]
Stock repurchased during period (in shares)	0	0
Affiliated entity
Class of Stock [Line Items]
Class N Redeemable Common Stock issued	$ 656,591
Affiliated entity | Class N Common Stock
Class of Stock [Line Items]
Class N Redeemable Common Stock issued (in shares)	19,291,705
Massachusetts Mutual Life Insurance Company | Affiliated entity
Class of Stock [Line Items]
Class N Redeemable Common Stock issued	$ 486,133
Massachusetts Mutual Life Insurance Company | Affiliated entity | Class N Common Stock
Class of Stock [Line Items]
Class N Redeemable Common Stock issued (in shares)	16,485,652
Class N Redeemable Common Stock repurchased	$ 74,800
Massachusetts Mutual Life Insurance Company | Affiliated entity | Class N Common Stock | Initial Subscription Agreement
Class of Stock [Line Items]
Class N Redeemable Common Stock issued (in shares)	16,485,652		16,320,994
Class N Redeemable Common Stock issued	$ 486,133		$ 481,299
Stock repurchased during period (in shares)	2,537,790		2,537,790
Class N Redeemable Common Stock repurchased	$ 74,795		$ 74,795