Revenue Recognition - Disaggregation of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue
Total	$ 55,819	$ 73,300	$ 128,394	$ 171,181
Air Cargo
Disaggregation of Revenue
Total	16,322	18,706	49,789	56,771
Air Cargo | Product Sales
Disaggregation of Revenue
Total	4,970	6,014	15,013	18,108
Air Cargo | Support Services
Disaggregation of Revenue
Total	11,342	12,644	34,751	38,572
Air Cargo | Leasing Revenue
Disaggregation of Revenue
Total	0	0	0	0
Air Cargo | Other
Disaggregation of Revenue
Total	10	48	25	91
Ground equipment sales
Disaggregation of Revenue
Total	20,769	15,949	48,656	40,939
Ground equipment sales | Product Sales
Disaggregation of Revenue
Total	20,365	15,640	47,935	40,132
Ground equipment sales | Support Services
Disaggregation of Revenue
Total	109	161	193	370
Ground equipment sales | Leasing Revenue
Disaggregation of Revenue
Total	39	58	110	111
Ground equipment sales | Other
Disaggregation of Revenue
Total	256	90	418	326
Commercial jet engines and parts
Disaggregation of Revenue
Total	18,078	38,536	28,886	72,665
Commercial jet engines and parts | Product Sales
Disaggregation of Revenue
Total	16,471	35,463	23,450	59,851
Commercial jet engines and parts | Support Services
Disaggregation of Revenue
Total	1,191	797	3,771	3,804
Commercial jet engines and parts | Leasing Revenue
Disaggregation of Revenue
Total	373	2,245	1,537	8,901
Commercial jet engines and parts | Other
Disaggregation of Revenue
Total	43	31	128	109
Corporate and other
Disaggregation of Revenue
Total	650	109	1,063	806
Corporate and other | Product Sales
Disaggregation of Revenue
Total	73	3	106	72
Corporate and other | Support Services
Disaggregation of Revenue
Total	47	116	72	383
Corporate and other | Leasing Revenue
Disaggregation of Revenue
Total	36	36	178	117
Corporate and other | Other
Disaggregation of Revenue
Total	$ 494	$ (46)	$ 707	$ 234