REVENUE - Net sales from customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
REVENUE
Revenue	$ 9,096	$ 7,379
A | Customer concentration risk | Sales revenue, net
REVENUE
Revenue	$ 1,441	$ 1,126
Concentration risk percentage	16.00%	15.00%
C | Customer concentration risk | Sales revenue, net
REVENUE
Revenue		$ 1,845
Concentration risk percentage		25.00%
D | Customer concentration risk | Sales revenue, net
REVENUE
Revenue	$ 1,655
Concentration risk percentage	18.00%
E | Customer concentration risk | Sales revenue, net
REVENUE
Revenue		$ 1,590
Concentration risk percentage		21.00%
F | Customer concentration risk | Sales revenue, net
REVENUE
Revenue	$ 1,080	$ 711
Concentration risk percentage	12.00%	10.00%
Ranor | Customer concentration risk | Sales revenue, net
REVENUE
Revenue	$ 2,471	$ 3,202
Concentration risk percentage	27.00%	43.00%
Stadco | Customer concentration risk | Sales revenue, net
REVENUE
Revenue	$ 1,705	$ 2,070
Concentration risk percentage	19.00%	28.00%