Note 3 - Business Segment Information (Details Textual) $ in Thousands	12 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)
Number of Operating Segments	2
Revenue from Contract with Customer, Including Assessed Tax	$ 455,120	$ 315,612
Intersegment Revenue Markup Percentage	10.00%
Display Solutions Segment [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 221,671	$ 126,612
Revenue Benchmark [Member] | Customer Concentration Risk [Member]
Number of Major Customers	0
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Display Solutions Segment [Member] | One Customer [Member]
Number of Major Customers		1
Revenue from Contract with Customer, Including Assessed Tax		$ 35,200
Concentration Risk, Percentage		11.20%
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Number of Major Customers	0	0