REVENUE RECOGNITION - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Total	$ 236,785	$ 215,502
Overnight air cargo
Disaggregation of Revenue [Line Items]
Total	75,275	72,978
Ground equipment sales
Disaggregation of Revenue [Line Items]
Total	59,156	47,152
Commercial jet engines and parts
Disaggregation of Revenue [Line Items]
Total	306	655
Printing equipment and maintenance
Disaggregation of Revenue [Line Items]
Total	101,284	93,968
Corporate and other
Disaggregation of Revenue [Line Items]
Total	764	749
Product Sales | Overnight air cargo
Disaggregation of Revenue [Line Items]
Total	23,690	23,043
Product Sales | Ground equipment sales
Disaggregation of Revenue [Line Items]
Total	58,082	45,897
Product Sales | Commercial jet engines and parts
Disaggregation of Revenue [Line Items]
Total	86,625	78,174
Product Sales | Printing equipment and maintenance
Disaggregation of Revenue [Line Items]
Total	261	592
Product Sales | Corporate and other
Disaggregation of Revenue [Line Items]
Total	0	0
Support Services | Overnight air cargo
Disaggregation of Revenue [Line Items]
Total	51,469	49,781
Support Services | Ground equipment sales
Disaggregation of Revenue [Line Items]
Total	485	648
Support Services | Commercial jet engines and parts
Disaggregation of Revenue [Line Items]
Total	3,675	5,239
Support Services | Printing equipment and maintenance
Disaggregation of Revenue [Line Items]
Total	42	47
Support Services | Corporate and other
Disaggregation of Revenue [Line Items]
Total	104	89
Leasing Revenue | Overnight air cargo
Disaggregation of Revenue [Line Items]
Total	0	0
Leasing Revenue | Ground equipment sales
Disaggregation of Revenue [Line Items]
Total	189	76
Leasing Revenue | Commercial jet engines and parts
Disaggregation of Revenue [Line Items]
Total	10,797	10,189
Leasing Revenue | Printing equipment and maintenance
Disaggregation of Revenue [Line Items]
Total	0	0
Leasing Revenue | Corporate and other
Disaggregation of Revenue [Line Items]
Total	152	126
Other | Overnight air cargo
Disaggregation of Revenue [Line Items]
Total	116	154
Other | Ground equipment sales
Disaggregation of Revenue [Line Items]
Total	400	531
Other | Commercial jet engines and parts
Disaggregation of Revenue [Line Items]
Total	187	366
Other | Printing equipment and maintenance
Disaggregation of Revenue [Line Items]
Total	3	16
Other | Corporate and other
Disaggregation of Revenue [Line Items]
Total	$ 508	$ 534