Fair Value Measurements - Additional Information (Details) - USD ($)	1 Months Ended		3 Months Ended		9 Months Ended
	Dec. 31, 2022	Apr. 30, 2019	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2022	Oct. 31, 2021	Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Acquisition earn-out contingency			$ 2,000,000		$ 2,000,000	$ 0
Other investments			39,220,000		39,220,000	$ 18,000,000	$ 24,220,000
Bajio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Reduction in contingent consideration liability			2,600,000		5,100,000
Acquisition earn-out contingency			0		0
Founders One LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments			30,000,000		30,000,000			$ 15,000,000
Rich Data Corp
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments			$ 6,200,000		$ 6,200,000
2.89% promissory note receivable due April 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable, fair value		$ 1,100,000							$ 1,100,000
Interest on note receivable		2.89%		2.89%	2.89%	2.89%
12.00% promissory note receivable from Founders
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable, fair value	$ 15,000,000			$ 15,000,000
Interest on note receivable	12.00%				12.00%