Segment Information - Segment Data (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information
Revenue	$ 63,756	$ 61,396	$ 214,154	$ 172,946
Operating income	(1,608)	135	(189)	1,147
Capital expenditures	120	245	678	1,037
Depreciation and amortization	699	1,097	2,088	2,984
Overnight air cargo
Segment Reporting Information
Revenue	29,018	21,831	84,944	64,464
Operating income	1,594	1,009	5,568	2,931
Capital expenditures	60	37	263	228
Depreciation and amortization	95	22	269	64
Overnight air cargo | Domestic
Segment Reporting Information
Revenue	28,818	21,831	84,054	64,464
Overnight air cargo | International
Segment Reporting Information
Revenue	200	0	890	0
Ground equipment sales
Segment Reporting Information
Revenue	8,441	16,147	32,474	39,981
Operating income	(522)	1,093	(619)	3,122
Capital expenditures	24	16	82	32
Depreciation and amortization	37	35	107	130
Ground equipment sales | Domestic
Segment Reporting Information
Revenue	8,178	16,009	28,709	34,830
Ground equipment sales | International
Segment Reporting Information
Revenue	263	138	3,765	5,151
Commercial jet engines and parts
Segment Reporting Information
Revenue	24,139	21,736	90,463	63,577
Operating income	(627)	733	2,002	3,603
Capital expenditures	24	132	166	484
Depreciation and amortization	185	721	565	1,717
Commercial jet engines and parts | Domestic
Segment Reporting Information
Revenue	15,967	13,704	66,698	42,047
Commercial jet engines and parts | International
Segment Reporting Information
Revenue	8,172	8,032	23,765	21,530
Corporate and other
Segment Reporting Information
Revenue	2,158	1,682	6,273	4,924
Operating income	(2,053)	(2,700)	(7,140)	(8,509)
Capital expenditures	12	60	167	293
Depreciation and amortization	382	319	1,147	1,073
Corporate and other | Domestic
Segment Reporting Information
Revenue	935	565	2,873	2,092
Corporate and other | International
Segment Reporting Information
Revenue	$ 1,223	$ 1,117	$ 3,400	$ 2,832