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Fair Value of Financial Instruments - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 27, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Trading of convertible notes, face value, disclosed as a percentage 102.00% 101.00%  
Senior Unsecured 5.00% Due 2028      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Long-term debt $ 300,000 $ 300,000 $ 300,000
Minimum      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Fair Value Inputs, Long-term Revenue Growth Rate 1.30%    
Fair Value Inputs, Discount Rate 15.00%    
Maximum      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Fair Value Inputs, Long-term Revenue Growth Rate 2.50%    
Fair Value Inputs, Discount Rate 17.00%    
United States | Purcell      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Indefinite-Lived Trademarks $ 4,300    
United States | Americas      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Impairment charge of goodwill and other indefinite-lived assets due to remeasurement 700    
EMEA | Purcell      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Indefinite-Lived Trademarks 3,900    
EMEA | Americas      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Impairment charge of goodwill and other indefinite-lived assets due to remeasurement $ 1,100