Commitments, Contingencies and Litigation - Additional Information (Detail) € in Thousands			1 Months Ended			3 Months Ended			12 Months Ended
	Jun. 11, 2013 USD ($)	Jun. 11, 2013 EUR (€)	Jul. 31, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2019 EUR (€)	Mar. 31, 2020 USD ($) Employee	Mar. 31, 2019 USD ($)
Commitments, Contingencies And Litigation [Line Items]
Reserves of environmental liabilities									$ 1,060,000	$ 1,081,000
Company number of employees | Employee									11,400
Percentage of employees covered by collective bargaining agreements									29.00%
Percentage of collective bargaining agreements that expire in next twelve months									12.00%
Average term of collective bargaining agreements									2 years
Longest term of collective bargaining agreements									3 years
Litigation settlement, amount awarded from other party	$ 2,756,000	€ 2,000				$ 2,843
Belgium Anti-Competition Proceeding
Commitments, Contingencies And Litigation [Line Items]
Penalties paid relating to anti-competition investigations					$ 1,962,000
Legal proceedings charge									$ 2,402
Germany Anti-competition Proceedings
Commitments, Contingencies And Litigation [Line Items]
Penalties paid relating to anti-competition investigations				$ 14,811,000
Legal proceedings charge									7,258,000
Reserves for anti-competition investigations							$ 7,258,000		$ 0	$ 7,258,000
Dutch Anti-Competition Proceedings [Member]
Commitments, Contingencies And Litigation [Line Items]
Penalties paid relating to anti-competition investigations			$ 11,229,000
Settled Litigation [Member]
Commitments, Contingencies And Litigation [Line Items]
Litigation settlement, amount awarded from other party							$ 2,843,000	€ 2,500