Nature of Business and Summary of Significant Accounting Policies - Cash and Cash Equivalents and Investments (Details) - USD ($)	Sep. 30, 2024	Jun. 30, 2024
Accounting policies
Cash and cash equivalents	$ 85,596,000	$ 65,341,000
Investments - other	10,926,000	26,980,000
Certificate of Deposits
Accounting policies
Investments - other	10,926,000	$ 26,980,000
Certificate of Deposits | Cash and Cash Equivalents
Accounting policies
Interest Rate		4.70%
Cost		$ 5,374,000
Carrying Value		5,402,000
Certificate of Deposits | Investments - other
Accounting policies
Cost	10,747,000	26,709,000
Carrying Value	$ 10,926,000	$ 26,980,000
Certificate of Deposits | Investments - other | Minimum
Accounting policies
Interest Rate	4.60%	4.55%
Certificate of Deposits | Investments - other | Maximum
Accounting policies
Interest Rate	4.75%	4.75%
Cash
Accounting policies
Cash and cash equivalents	$ 12,541,000	$ 18,823,000
Money Market Fund
Accounting policies
Cash and cash equivalents	$ 73,055,000	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		$ 46,518,000