Note 7 - Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Jun. 30, 2023
finite lived, gross	$ 86,235	$ 86,235
finite lived, accumulated amortization	38,704	35,134
finite lived, net	47,531	51,101
indefinite lived	12,102	12,102
Total Other Intangible Assets	98,337	98,337
Other intangible assets, net	59,633	63,203
Trademarks and Trade Names [Member]
indefinite lived	12,102	12,102
Customer Relationships [Member]
finite lived, gross	62,083	62,083
finite lived, accumulated amortization	20,379	17,817
finite lived, net	41,704	44,266
Patents [Member]
finite lived, gross	268	268
finite lived, accumulated amortization	268	268
finite lived, net	0	0
LED Technology Firmware Software [Member]
finite lived, gross		20,966
finite lived, accumulated amortization		15,783
finite lived, net		5,183
Trade Names [Member]
finite lived, gross	2,658	2,658
finite lived, accumulated amortization	1,238	1,156
finite lived, net	1,420	1,502
Noncompete Agreements [Member]
finite lived, gross	260	260
finite lived, accumulated amortization	149	110
finite lived, net	111	$ 150
Technology-Based Intangible Assets [Member]
finite lived, gross	20,966
finite lived, accumulated amortization	16,670
finite lived, net	$ 4,296