Property, Plant, and Equipment - Summary of Property, Plant, and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, including finance lease right-of-use asset, gross	$ 1,108,147
Property, plant and equipment, gross		$ 1,006,239
Less accumulated depreciation	(628,133)
Less accumulated depreciation		(596,800)
Property, plant, and equipment, net	480,014
Total		409,439	$ 390,260
Land, buildings, and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, including finance lease right-of-use asset, gross	291,271
Property, plant and equipment, gross		268,006
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, including finance lease right-of-use asset, gross	722,955
Property, plant and equipment, gross		683,955
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, including finance lease right-of-use asset, gross	$ 93,921
Property, plant and equipment, gross		$ 54,278