Note 4 - Investments - Reconciliation of Investments Recorded at Fair Value (Details) (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Investment Income, Net	$ 2,144	$ 316
Statement Of Other Comprehensive Income Abstract [Domain]
Other Comprehensive Income (Loss), Net of Tax	$ (764)	$ (2,276)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Investment Income, Net
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Net of Tax