v3.26.1
Note 20 - Business Segments - Operating Results for Business Segments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Revenues $ 299,155 $ 222,818 $ 145,639
Segment other operating expenses [1],[2] 287,710 223,895 157,007
Segment operating income (loss) [2] 11,445 (1,077) (11,368)
Operating income (loss): [2] 11,445 (1,077) (11,368)
Interest income, net 6,356 3,708 1,302
Other expense (1,053) (265) (736)
Income (loss) before taxes 16,748 2,366 (10,802)
Depreciation and amortization 7,386 5,560 4,494
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member]      
Revenues 0 0 0
Segment other operating expenses [1],[2] 4,171 6,681 4,908
Segment operating income (loss) [2] (4,171) (6,681) (4,908)
Operating income (loss): [2] (4,171) (6,681) (4,908)
Grid [Member]      
Revenues 251,317 187,170 122,065
Grid [Member] | Operating Segments [Member]      
Revenues 251,317 187,170 122,065
Segment other operating expenses [1],[2] 242,849 185,358 128,974
Segment operating income (loss) [2] 8,468 1,812 (6,909)
Operating income (loss): [2] 8,468 1,812 (6,909)
Depreciation and amortization 7,253 5,468 4,407
Wind [Member]      
Revenues 47,838 35,648 23,574
Wind [Member] | Operating Segments [Member]      
Revenues 47,838 35,648 23,574
Segment other operating expenses [1],[2] 40,689 31,856 23,125
Segment operating income (loss) [2] 7,149 3,792 449
Operating income (loss): [2] 7,149 3,792 449
Depreciation and amortization $ 133 $ 92 $ 87
[1] Segment other operating expense includes cost of sales, research and development expense, selling general, and administrative expense, amortization of acquisition related intangibles, and gain/loss on contingent consideration.
[2] The significant expense categories and amounts align with the segment-level information that is regularly provided to the chief operating decision maker.