Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Net sales	$ 138,095	$ 123,441
Lighting Segment [Member]
Net sales	58,437	67,641
Lighting Segment [Member] | LED Lighting, Digital Signage, Electronic Circuit Boards [Member]
Net sales	47,429	55,491
Lighting Segment [Member] | Legacy Products [Member]
Net sales	10,393	11,383
Lighting Segment [Member] | Turnkey Services and Other [Member]
Net sales	615	767
Display Solutions Segment [Member]
Net sales	79,658	55,800
Display Solutions Segment [Member] | LED Lighting, Digital Signage, Electronic Circuit Boards [Member]
Net sales	8,436	8,933
Display Solutions Segment [Member] | Legacy Products [Member]
Net sales	55,703	34,869
Display Solutions Segment [Member] | Turnkey Services and Other [Member]
Net sales	15,519	11,998
Transferred at Point in Time [Member] | Lighting Segment [Member]
Net sales	48,211	57,652
Transferred at Point in Time [Member] | Display Solutions Segment [Member]
Net sales	62,094	39,988
Transferred over Time [Member] | Lighting Segment [Member]
Net sales	10,226	9,989
Transferred over Time [Member] | Display Solutions Segment [Member]
Net sales	$ 17,564	$ 15,812