Note 11 - Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended
		Sep. 30, 2022	Sep. 30, 2021
Balance		$ 54,164	$ 54,324
Balance		53,329	56,061
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance		3,624	6,564
Other comprehensive loss before reclassifications		(146)	(186)
Tax effect		31	39
Amount reclassified from AOCI		(469)	(602)
Tax effect		98	126
Net other comprehensive loss		(486)	(623)
Balance		3,138	5,941
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	[1]	0	23
Other comprehensive loss before reclassifications	[1]	0	(12)
Tax effect	[1]	0	0
Amount reclassified from AOCI	[1]	0	0
Tax effect	[1]	0	0
Net other comprehensive loss	[1]	0	(12)
Balance	[1]	0	11
AOCI Attributable to Parent [Member]
Balance		3,624	6,587
Other comprehensive loss before reclassifications		(146)	(198)
Tax effect		31	39
Amount reclassified from AOCI		(469)	(602)
Tax effect		98	126
Net other comprehensive loss		(486)	(635)
Balance		$ 3,138	$ 5,952

[1] Amounts include no tax expense or benefit.