Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on Recurring and Non-recurring Basis (Details) - USD ($)	Sep. 30, 2021	Jun. 30, 2021
Assets:
Total assets	$ 50,549,000	$ 50,534,000
Liabilities:
Participation feature of HC LLC Series A-2 Preferred Stock	0
Contingent consideration liability	605,000	271,000
Total liabilities	605,000	271,000
Fair Value, Inputs, Level 1
Assets:
Equity investments	19,141,000	19,444,000
Total assets	45,682,000	45,934,000
Liabilities:
Participation feature of HC LLC Series A-2 Preferred Stock	0	0
Contingent consideration liability	0	0
Total liabilities	0	0
Fair Value, Inputs, Level 1 | Consolidated Fund
Assets:
Equity investments	26,541,000	26,490,000
Fair Value, Inputs, Level 2
Assets:
Equity investments	0	0
Total assets	0	0
Liabilities:
Participation feature of HC LLC Series A-2 Preferred Stock	0	0
Contingent consideration liability	0	0
Total liabilities	0	0
Fair Value, Inputs, Level 2 | Consolidated Fund
Assets:
Equity investments	0	0
Fair Value, Inputs, Level 3
Assets:
Equity investments	0	0
Total assets	0	0
Liabilities:
Contingent consideration liability	605,000	271,000
Total liabilities	605,000	271,000
Fair Value, Inputs, Level 3 | Consolidated Fund
Assets:
Equity investments	0	0
Fair Value, Inputs, Level 1, 2 and 3
Assets:
Equity investments	19,141,000	19,444,000
Total assets	45,682,000	45,934,000
Fair Value, Inputs, Level 1, 2 and 3 | Consolidated Fund
Assets:
Equity investments	26,541,000	26,490,000
Fair Value Measured at Net Asset Value Per Share
Assets:
Investments valued at net asset value	$ 4,867,000	$ 4,600,000