Note 3 - Segment Reporting Information (Details Textual) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2022 USD ($)
Number of Operating Segments			2
Revenue from Contract with Customer, Including Assessed Tax	$ 128,804	$ 111,143	$ 255,873	$ 217,540
Intersegment Revenue Markup Percentage			10.00%
Display Solutions Segment [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 61,971	$ 53,867	$ 121,507	$ 109,004
Revenue Benchmark [Member] | Customer Concentration Risk [Member]
Number of Major Customers	0		0
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Display Solutions Segment [Member] | One Customer [Member]
Number of Major Customers				1
Concentration Risk, Percentage				10.90%
Revenue Benchmark [Member] | Revenue from Rights Concentration Risk [Member] | Display Solutions Segment [Member] | One Customer [Member]
Revenue from Contract with Customer, Including Assessed Tax				$ 23,700
Revenue, Segment 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		$ 11,400
Concentration Risk, Percentage		10.30%
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Number of Major Customers	0		0
Accounts Receivable [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					$ 8,500
Concentration Risk, Percentage					10.90%