Inventories (Tables)

6 Months Ended

Sep. 30, 2020

Inventory Disclosure [Abstract]

Schedule of Components of Inventories

Inventories are stated at the lower of cost (average-cost or specific-identification methods) or market. The components of inventories are as follows:

	September 30, 2020		March 31, 2020
Raw materials	$	56,101	$	32,552
Work-in-process, including manufactured and purchased components		300,831		312,953
Finished goods		52,167		50,011
Rotable assets		56,701		57,460
Total inventories	$	465,800	$	452,976