Condensed Consolidated Statements of Stockholders’ Equity (Unaudited) - USD ($) $ in Thousands	Total	Additional Paid in Capital	Retained Earnings	Noncontrolling Interests General Partnerships	Noncontrolling Interests Hamilton Lane Advisors, L.L.C.	Noncontrolling Interests Consolidated Funds	Class A Common Stock Common Stock	Class B Common Stock Common Stock
Beginning balance at Mar. 31, 2022	$ 461,486	$ 161,676	$ 185,149	$ 3,423	$ 111,185	$ 0	$ 37	$ 16
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	110,896		68,365	351	42,180
Equity-based compensation	3,982	2,746			1,236
Repurchase of Class A shares for employee tax withholding	(93)	(64)			(29)
Dividends declared	(29,603)		(29,603)
Capital contributions from non-controlling interests, net	46			46
Member distributions	(25,707)				(25,707)
Employee Share Purchase Plan share issuance	1,001	689			311		1
Adjustment of redeemable non-controlling interest to redemption value	2,970		2,046		924
Equity reallocation between controlling and non-controlling interests	0	(284)			284
Ending balance at Sep. 30, 2022	524,978	164,763	225,957	3,820	130,384	0	38	16
Beginning balance at Jun. 30, 2022	490,974	163,129	205,325	3,632	118,835	0	37	16
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	56,936		34,881	43	22,012
Equity-based compensation	2,085	1,439			646
Repurchase of Class A shares for employee tax withholding	(93)	(64)			(29)
Dividends declared	(14,803)		(14,803)
Capital contributions from non-controlling interests, net	145			145
Member distributions	(11,586)				(11,586)
Employee Share Purchase Plan share issuance	517	356			160		1
Adjustment of redeemable non-controlling interest to redemption value	803		554		249
Equity reallocation between controlling and non-controlling interests	0	(97)			97
Ending balance at Sep. 30, 2022	524,978	164,763	225,957	3,820	130,384	0	38	16
Beginning balance at Mar. 31, 2023	574,192	171,567	243,823	3,877	135,702	19,169	39	15
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	115,850		72,992	88	37,790	4,980
Equity-based compensation	5,963	4,180			1,783
Repurchase of Class A shares for employee tax withholding	(108)	(76)			(32)
Dividends declared	(33,564)		(33,564)
Capital contributions from non-controlling interests, net	143,367			443		142,924
Member distributions	(25,214)				(25,214)
Employee Share Purchase Plan share issuance	1,082	758			324
Equity reallocation between controlling and non-controlling interests	0	2,786			(2,786)
Ending balance at Sep. 30, 2023	781,568	179,215	283,251	4,408	147,567	167,073	39	15
Beginning balance at Jun. 30, 2023	641,700	176,673	258,041	4,004	138,853	64,075	39	15
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	64,503		41,994	87	18,654	3,768
Equity-based compensation	3,118	2,185			933
Repurchase of Class A shares for employee tax withholding	0	0			0
Dividends declared	(16,784)		(16,784)
Capital contributions from non-controlling interests, net	99,547			317		99,230
Member distributions	(11,048)			0	(11,048)
Employee Share Purchase Plan share issuance	532	373			159
Equity reallocation between controlling and non-controlling interests	0	(16)			16
Ending balance at Sep. 30, 2023	$ 781,568	$ 179,215	$ 283,251	$ 4,408	$ 147,567	$ 167,073	$ 39	$ 15