REVENUE - Contract assets and contract liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
REVENUE
Contract assets	$ 10,808	$ 9,587
Contract liabilities	2,917	1,040	$ 2,104
Billed
REVENUE
Contract liabilities	20,528	18,720
Unbilled
REVENUE
Contract assets	26,415	26,059
Progress Payments
REVENUE
Contract assets	(15,607)	(16,472)
Obligations Satisfied
REVENUE
Contract liabilities	$ (18,651)	$ (19,784)