Segments - Additional Information (Details) $ in Thousands	3 Months Ended			6 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)		Sep. 30, 2020 USD ($) Segment	Sep. 30, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment				2
Revenues	$ 481,815	$ 772,110	[1]	$ 976,892	$ 1,502,341	[1]
Foreign Sales [Member]
Segment Reporting Information [Line Items]
Revenues	$ 96,734	$ 185,957		$ 188,931	$ 361,297

[1] As adjusted; refer to Note 1.