| Segment Reporting [Table Text Block] |
(In thousands) | | Twelve Months Ended | |
| | June 30, 2026 | |
| | | | | | | | | | | | |
| | Lighting | | | Display | | | Total | |
Total sales | | $ | 281,169 | | | $ | 424,526 | | | $ | 705,695 | |
Inter-segment sales | | | (14,946 | ) | | | (1,352 | ) | | | (16,298 | ) |
Net Sales | | | 266,223 | | | | 423,174 | | | | 689,397 | |
| | | | | | | | | | | | |
Other segment items * | | | (236,788 | ) | | | (384,235 | ) | | | (621,023 | ) |
| | | | | | | | | | | | |
Adjusted net income | | | 29,435 | | | | 38,939 | | | | 68,374 | |
| | | | | | | | | | | | |
Unallocated corporate expenses | | | | | | | | | | | (20,242 | ) |
Interest expense | | | | | | | | | | | (5,928 | ) |
Long-term performance based compensation | | | | | | | | | | | (3,458 | ) |
Amortization expense of acquired intangible assets | | | | | | | | | | | (7,220 | ) |
Severance costs and restructuring costs | | | | | | | | | | | (63 | ) |
Acquisition costs | | | | | | | | | | | (8,340 | ) |
Lease expense on the step-up basis of acquired leases | | | | | | | | | | | (508 | ) |
Foreign currency translation loss on intercompany loan | | | | | | | | | | | (329 | ) |
Tax rate difference between reported and adjusted net income | | | | | | | | | | | 293 | |
| | | | | | | | | | | | |
Net Income | | | | | | | | | | $ | 22,579 | |
(In thousands) | | Twelve Months Ended | |
| | June 30, 2025 | |
| | | | | | | | | | | | |
| | Lighting | | | Display | | | Total | |
Total sales | | $ | 268,332 | | | $ | 325,914 | | | $ | 594,246 | |
Inter-segment sales | | | (19,975 | ) | | | (894 | ) | | | (20,869 | ) |
Net Sales | | | 248,357 | | | | 325,020 | | | | 573,377 | |
| | | | | | | | | | | | |
Other segment items * | | | (222,588 | ) | | | (302,403 | ) | | | (524,991 | ) |
| | | | | | | | | | | | |
Adjusted net income | | | 25,769 | | | | 22,617 | | | | 48,386 | |
| | | | | | | | | | | | |
Unallocated corporate expenses | | | | | | | | | | | (12,374 | ) |
Interest expense | | | | | | | | | | | (3,129 | ) |
Long-term performance based compensation | | | | | | | | | | | (3,951 | ) |
Amortization expense of acquired intangible assets | | | | | | | | | | | (4,745 | ) |
Severance costs and restructuring costs | | | | | | | | | | | (240 | ) |
Acquisition costs | | | | | | | | | | | (900 | ) |
Lease expense on the step-up basis of acquired leases | | | | | | | | | | | (285 | ) |
Foreign currency translation loss on intercompany loan | | | | | | | | | | | 489 | |
Tax rate difference between reported and adjusted net income | | | | | | | | | | | 1,132 | |
| | | | | | | | | | | | |
Net Income | | | | | | | | | | $ | 24,383 | |
(In thousands) | | Twelve Months Ended | |
| | June 30, 2024 | |
| | | | | | | | | | | | |
| | Lighting | | | Display | | | Total | |
Total sales | | $ | 285,264 | | | $ | 208,023 | | | $ | 493,287 | |
Inter-segment sales | | | (22,851 | ) | | | (798 | ) | | | (23,649 | ) |
Net Sales | | | 262,413 | | | | 207,225 | | | | 469,638 | |
| | | | | | | | | | | | |
Other segment items * | | | (233,643 | ) | | | (188,514 | ) | | | (422,157 | ) |
| | | | | | | | | | | | |
Adjusted net income | | | 28,770 | | | | 18,711 | | | | 47,481 | |
| | | | | | | | | | | | |
Unallocated corporate expenses | | | | | | | | | | | (13,031 | ) |
Interest expense | | | | | | | | | | | (2,156 | ) |
Long-term performance based compensation | | | | | | | | | | | (3,272 | ) |
Amortization expense of acquired intangible assets | | | | | | | | | | | (3,671 | ) |
Severance costs and restructuring costs | | | | | | | | | | | (396 | ) |
Acquisition costs | | | | | | | | | | | (735 | ) |
Tax rate difference between reported and adjusted net income | | | | | | | | | | | 757 | |
| | | | | | | | | | | | |
Net Income | | | | | | | | | | $ | 24,977 | |
| | Twelve Months Ended | |
(In thousands) | | June 30 | |
| | 2026 | | | 2025 | | | 2024 | |
Capital expenditures: | | | | | | | | | | | | |
Lighting Segment | | $ | 2,192 | | | $ | 1,883 | | | $ | 3,555 | |
Display Solutions Segment | | | 2,852 | | | | 1,499 | | | | 1,386 | |
| | $ | 5,044 | | | $ | 3,382 | | | $ | 4,941 | |
| | | | | | | | | | | | |
Total segment capital expenditures: | | $ | 5,044 | | | $ | 3,382 | | | $ | 4,941 | |
Other unallocated capital expenditures | | | 98 | | | | 83 | | | | 447 | |
Consolidated capital expenditures: | | $ | 5,142 | | | $ | 3,465 | | | $ | 5,388 | |
| | | | | | | | | | | | |
Income tax expense: | | | | | | | | | | | | |
Lighting Segment | | $ | 6,064 | | | $ | 7,318 | | | $ | 7,172 | |
Display Solutions Segment | | | 4,062 | | | | 8,292 | | | | 4,424 | |
| | $ | 10,126 | | | $ | 15,610 | | | $ | 11,596 | |
| | | | | | | | | | | | |
Total segment income tax expense: | | $ | 10,126 | | | $ | 15,610 | | | $ | 11,596 | |
Other unallocated income tax benefit | | | (1,231 | ) | | | (6,955 | ) | | | (3,474 | ) |
Consolidated income tax expense: | | $ | 8,895 | | | $ | 8,655 | | | $ | 8,122 | |
| | | | | | | | | | | | |
Depreciation and Amortization: | | | | | | | | | | | | |
Lighting Segment | | $ | 5,089 | | | $ | 5,060 | | | $ | 5,167 | |
Display Solutions Segment | | | 11,066 | | | | 7,190 | | | | 4,480 | |
| | $ | 16,155 | | | $ | 12,250 | | | $ | 9,647 | |
| | | | | | | | | | | | |
Total segment depreciation and amortization: | | $ | 16,155 | | | $ | 12,250 | | | $ | 9,647 | |
Other unallocated depreciation and amortization | | | 410 | | | | 325 | | | | 352 | |
| | $ | 16,565 | | | $ | 12,575 | | | $ | 9,999 | |
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