Schedule of Cross-Currency Rate Swap Derivatives (Detail) € in Thousands, $ in Thousands	6 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2020 EUR (€)
Pay EUR
Effective Date	Oct. 15, 2019
Maturity	Oct. 15, 2024
Fixed Rate	2.75%	2.75%
Derivative notional amount | €		€ 85,000
Receive U.S $
Effective Date	Oct. 15, 2019
Maturity	Oct. 15, 2024
Fixed Rate	4.64%	4.64%
Derivative notional amount | $	$ 93,457