Revenue Recognition - Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenue, net:
Total revenue, net	$ 91,219	$ 73,882
Product [Member]
Revenue, net:
Total revenue, net	49,107	35,033
Microturbine Products
Revenue, net:
Total revenue, net	47,787	33,196
Accessories
Revenue, net:
Total revenue, net	1,320	1,837
Service [Member]
Revenue, net:
Total revenue, net	30,681	30,684
Rentals
Revenue, net:
Total revenue, net	11,431	8,165
North America [Member]
Revenue, net:
Total revenue, net	60,922	49,473
UNITED STATES
Revenue, net:
Total revenue, net	54,574	45,071
MEXICO
Revenue, net:
Total revenue, net	5,070	2,990
All other North America
Revenue, net:
Total revenue, net	1,278	1,412
RUSSIAN FEDERATION
Revenue, net:
Total revenue, net		3,045
All other Europe
Revenue, net:
Total revenue, net	18,333	11,553
Europe [Member]
Revenue, net:
Total revenue, net	18,333	14,598
Asia [Member]
Revenue, net:
Total revenue, net	3,137	3,251
AUSTRALIA
Revenue, net:
Total revenue, net	4,746	2,840
All other
Revenue, net:
Total revenue, net	$ 4,081	$ 3,720