Pension and Other Benefit Plans - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Retirement Benefits [Abstract]
Employer contribution	$ 0	$ 0	$ 0	$ 0
Expected employer contributions during the remainder of fiscal year	$ 0		$ 0