Nature of Business and Summary of Significant Accounting Policies - Cash and Cash Equivalents and Investments (Details) - USD ($)	Mar. 31, 2025	Jun. 30, 2024
Accounting policies
Cash and cash equivalents	$ 73,413,000	$ 65,341,000
Investments - other		26,980,000
Cash and Cash Equivalents
Accounting policies
Cost		5,374,000
Carrying Value		5,402,000
Investments - other
Accounting policies
Cost		26,709,000
Carrying Value		26,980,000
Certificate of Deposits
Accounting policies
Investments - other	0	$ 26,980,000
Certificate of Deposits | Cash and Cash Equivalents
Accounting policies
Interest Rate		4.70%
Certificate of Deposits | Investments - other | Minimum
Accounting policies
Interest Rate		4.55%
Certificate of Deposits | Investments - other | Maximum
Accounting policies
Interest Rate		4.75%
Cash
Accounting policies
Cash and cash equivalents	13,728,000	$ 18,823,000
Money Market Fund
Accounting policies
Cash and cash equivalents	59,685,000	41,116,000
Certificate of Deposits
Accounting policies
Cash and cash equivalents		5,402,000
Short Term Time Deposits Member
Accounting policies
Cash and cash equivalents	$ 59,685,000	$ 46,518,000