Tax Receivable Agreement Liability - Schedule of Tax Agreement Liability (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2020	Mar. 31, 2021	Jun. 30, 2020
Tax Receivable Agreement [Roll Forward]
Payable pursuant to tax receivable agreement	$ 49,665	$ 53,754	$ 53,754
Additions (reductions) to tax receivable agreement:
Adjustment for change in estimated tax rate	0	(1,650)
Payments under tax receivable agreement	0		(3,458)
Payable pursuant to tax receivable agreement	49,665	$ 53,754	53,754	$ 51,739	$ 49,665
Less current portion under tax receivable agreement				(3,589)	(3,589)
Payable pursuant to tax receivable agreement, less current portion				$ 48,150	$ 46,076
Exchange of LLC Units for Class A Shares
Additions (reductions) to tax receivable agreement:
Exchange of LLC Units for Class A Common Stock	2,074		1,041
Adjustment for change in estimated tax rate	$ 0		$ (1,672)