Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Accounts Receivable, after Allowance for Credit Loss, Current	$ 104,347	$ 78,626	$ 77,700
Cash, Uninsured Amount	3,500	3,300
Depreciation	$ 6,706	5,041
Standard Warranty Extended Term for Exceptions	10 years
Defined Contribution Plan, Cost	$ 2,400	2,300
Research and Development Expense	$ 3,300	$ 3,500
Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares	2,024,000	2,087,000
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	$ (600)	$ 100
Gain (Loss), Foreign Currency Transaction, before Tax	$ (400)	$ 300
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	20 years
Standard Warranty Term	5 years
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	5 years
Standard Warranty Term	1 year
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	15 years