INVENTORIES - Schedule of Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Inventory [Line Items]
Total inventories	$ 61,106	$ 27,610
Reserves	483	155
Inventories, net	60,623	27,455
Ground Equipment Manufacturing
Inventory [Line Items]
Raw materials	4,192	2,498
Work in process	2,731	1,659
Finished goods	1,725	972
Printing equipment and maintenance
Inventory [Line Items]
Raw materials	464	401
Finished goods	910	1,048
Commercial jet engines and parts
Inventory [Line Items]
Finished goods	$ 51,084	$ 21,032

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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