Inventories - Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Commercial jet engines and parts:
Whole engines available for sale or tear-down	$ 0	$ 10,141
Parts	43,693	50,813
Total inventories	57,729	74,738
Reserves	(3,842)	(3,613)
Total inventories, net of reserves	53,887	71,125
Overnight air cargo:
Ground equipment manufacturing:
Finished goods	931	546
Corporate and other:
Finished goods	931	546
Ground equipment manufacturing:
Ground equipment manufacturing:
Raw materials	5,921	4,589
Work in process	2,997	153
Finished goods	2,344	6,976
Corporate and other:
Raw materials	5,921	4,589
Finished goods	2,344	6,976
Corporate and other
Ground equipment manufacturing:
Raw materials	1,118	794
Finished goods	725	726
Corporate and other:
Raw materials	1,118	794
Finished goods	$ 725	$ 726