v3.7.0.1
Business Segments - Additional Information (Detail)
$ in Thousands
12 Months Ended
Mar. 31, 2017
USD ($)
Country
Mar. 31, 2016
USD ($)
Mar. 31, 2015
USD ($)
Segment Reporting Information [Line Items]      
Operations in number of countries | Country 100    
Property, plant, and equipment, net $ 348,549 $ 357,409 $ 356,854
United States      
Segment Reporting Information [Line Items]      
Percentage of sales to customers 50.00% 51.00% 46.00%
Property, plant, and equipment, net $ 156,828 $ 149,348