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SEGMENT DATA - (Reconciliation of Segment Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2025 | Dec. 31, 2024
Corporate and Other |  |  |  |
Revenues | $ 21,089 | $ 19,584 | $ 60,583 | $ 58,851
Total Cost of Sales | 14,582 | 13,830 | 41,998 | 44,350
Gross profit | 6,507 | 5,754 | 18,585 | 14,501
Operating expenses: |  |  |  |
General and administrative | 3,385 | 3,857 | 11,487 | 12,970
Sales and marketing | 2,499 | 2,859 | 7,291 | 8,644
Research and development | 237 | 287 | 676 | 840
Total operating expenses | 6,121 | 7,003 | 19,454 | 22,454
Income (loss) from operations | 386 | (1,249) | (869) | (7,953)
Other income (expense): |  |  |  |
Royalty income | 46 | 45 | 49 | 61
Interest income | 0 | 1 | 0 | 1
Amortization of debt issue cost | (51) | (49) | (152) | (155)
Loss before income tax | 178 | (1,507) | (1,624) | (8,846)
Product [Member] |  |  |  |
Corporate and Other |  |  |  |
Revenues | 14,639 | 14,308 | 40,964 | 39,442
Total Cost of Sales | 9,780 | 9,347 | 27,379 | 26,809
Service [Member] |  |  |  |
Corporate and Other |  |  |  |
Revenues | 6,450 | 5,276 | 19,619 | 19,409
Total Cost of Sales | 4,802 | 4,483 | 14,619 | 17,541
Operating Segments |  |  |  |
Corporate and Other |  |  |  |
Revenues | 21,089 | 19,584 | 60,583 | 58,851
Total Cost of Sales | 14,582 | 13,830 | 41,998 | 44,350
Gross profit | 6,507 | 5,754 | 18,585 | 14,501
Operating expenses: |  |  |  |
General and administrative | 3,385 | 3,857 | 11,487 | 12,970
Sales and marketing | 2,499 | 2,859 | 7,293 | 8,644
Research and development | 237 | 287 | 674 | 840
Total operating expenses | 6,121 | 7,003 | 19,454 | 22,454
Income (loss) from operations | (386) | (1,249) | (869) | (7,953)
Other income (expense): |  |  |  |
Royalty income | 46 | 45 | 49 | 61
Interest expense | (203) | (255) | (652) | 800
Interest income |  | 1 |  | 1
Amortization of debt issue cost | (51) | (49) | (152) | (155)
Total other expense | (208) | (258) | (755) | (893)
Loss before income tax | 178 | (1,507) | (1,624) | (8,846)
Depreciation and Amortization |  |  | 1,477 | 1,868
Capital Expenditures |  |  | 58 | 48
Operating Segments | Lighting Segment |  |  |  |
Corporate and Other |  |  |  |
Revenues | 12,074 | 13,214 | 35,620 | 36,805
Total Cost of Sales | 8,522 | 9,230 | 25,255 | 27,185
Gross profit | 3,552 | 3,984 | 10,365 | 9,620
Operating expenses: |  |  |  |
General and administrative | 1,424 | 1,330 | 4,813 | 4,516
Sales and marketing | 2,014 | 2,079 | 5,882 | 6,731
Research and development | 116 | 146 | 330 | 428
Total operating expenses | 3,554 | 3,555 | 11,025 | 11,675
Income (loss) from operations | (2) | 429 | (660) | (2,055)
Other income (expense): |  |  |  |
Depreciation and Amortization |  |  | 487 | 596
Capital Expenditures |  |  | 55 | 12
Operating Segments | Maintenance Segment |  |  |  |
Corporate and Other |  |  |  |
Revenues | 4,356 | 3,925 | 12,844 | 11,045
Total Cost of Sales | 3,108 | 2,887 | 9,424 | 9,299
Gross profit | 1,248 | 1,038 | 3,420 | 1,746
Operating expenses: |  |  |  |
General and administrative | 532 | 523 | 1,731 | 2,169
Sales and marketing | 112 | 166 | 332 | 478
Research and development | 36 | 40 | 103 | 118
Total operating expenses | 680 | 729 | 2,166 | 2,765
Income (loss) from operations | 568 | 309 | 1,254 | (1,019)
Other income (expense): |  |  |  |
Depreciation and Amortization |  |  | 146 | 289
Capital Expenditures |  |  | 4 | 1
Operating Segments | EV Segment |  |  |  |
Corporate and Other |  |  |  |
Revenues | 4,659 | 2,445 | 12,119 | 11,001
Total Cost of Sales | 2,952 | 1,713 | 7,319 | 7,866
Gross profit | 1,707 | 732 | 4,800 | 3,135
Operating expenses: |  |  |  |
General and administrative | 713 | 1,370 | 2,482 | 4,007
Sales and marketing | 267 | 501 | 753 | 1,051
Research and development | 21 | 27 | 59 | 78
Total operating expenses | 1,001 | 1,898 | 3,294 | 5,136
Income (loss) from operations | 706 | (1,166) | 1,506 | (2,001)
Other income (expense): |  |  |  |
Depreciation and Amortization |  |  | 632 | 777
Capital Expenditures |  |  | 0 | 0
Operating Segments | Corporate and Other |  |  |  |
Corporate and Other |  |  |  |
Revenues | 0 | 0 | 0 | 0
Total Cost of Sales | 0 | 0 | 0 | 0
Gross profit | 0 | 0 |  |
Operating expenses: |  |  |  |
General and administrative | 716 | 634 | 2,461 | 2,278
Sales and marketing | 106 | 113 | 326 | 384
Research and development | 64 | 74 | 182 | 216
Total operating expenses | 886 | 821 | 2,969 | 2,878
Income (loss) from operations | (886) | (821) | (2,969) | (2,878)
Other income (expense): |  |  |  |
Depreciation and Amortization |  |  | 212 | 206
Capital Expenditures |  |  | (1) | 35
Operating Segments | Product [Member] |  |  |  |
Corporate and Other |  |  |  |
Revenues | 14,639 | 14,308 | 40,964 | 39,442
Total Cost of Sales | 9,780 | 9,347 | 27,379 | 26,809
Operating Segments | Product [Member] | Lighting Segment |  |  |  |
Corporate and Other |  |  |  |
Revenues | 9,138 | 11,460 | 27,880 | 31,080
Total Cost of Sales | 6,679 | 7,878 | 19,881 | 21,958
Operating Segments | Product [Member] | Maintenance Segment |  |  |  |
Corporate and Other |  |  |  |
Revenues | 2,165 | 1,672 | 5,711 | 3,795
Total Cost of Sales | 1,151 | 784 | 3,128 | 2,007
Operating Segments | Product [Member] | EV Segment |  |  |  |
Corporate and Other |  |  |  |
Revenues | 3,336 | 1,176 | 7,373 | 4,567
Total Cost of Sales | 1,950 | 685 | 4,370 | 2,844
Operating Segments | Product [Member] | Corporate and Other |  |  |  |
Corporate and Other |  |  |  |
Revenues | 0 | 0 | 0 | 0
Total Cost of Sales | 0 | 0 | 0 | 0
Operating Segments | Service [Member] |  |  |  |
Corporate and Other |  |  |  |
Revenues | 6,450 | 5,276 | 19,619 | 19,409
Total Cost of Sales | 4,802 | 4,483 | 14,619 | 17,541
Operating Segments | Service [Member] | Lighting Segment |  |  |  |
Corporate and Other |  |  |  |
Revenues | 2,936 | 1,754 | 7,740 | 5,725
Total Cost of Sales | 1,843 | 1,352 | 5,374 | 5,227
Operating Segments | Service [Member] | Maintenance Segment |  |  |  |
Corporate and Other |  |  |  |
Revenues | 2,191 | 2,253 | 7,133 | 7,250
Total Cost of Sales | 1,957 | 2,103 | 6,296 | 7,292
Operating Segments | Service [Member] | EV Segment |  |  |  |
Corporate and Other |  |  |  |
Revenues | 1,323 | 1,269 | 4,746 | 6,434
Total Cost of Sales | 1,002 | 1,028 | 2,949 | 5,022
Operating Segments | Service [Member] | Corporate and Other |  |  |  |
Corporate and Other |  |  |  |
Revenues | 0 | 0 | 0 | 0
Total Cost of Sales | $ 0 | $ 0 | $ 0 | $ 0

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Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateAndOtherMember
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Data Type: | na
Balance Type: |
Period Type: |