REVENUE - Contract assets and contract liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Mar. 31, 2025	Mar. 31, 2024
REVENUE
Contract assets	$ 11,420	$ 9,587
Contract liabilities	3,146	1,040	$ 2,104
Billed
REVENUE
Contract liabilities	19,552	18,720
Unbilled
REVENUE
Contract assets	25,779	26,059
Progress Payments
REVENUE
Contract assets	(14,359)	(16,472)
Obligations Satisfied
REVENUE
Contract liabilities	$ (17,446)	$ (19,784)