v3.7.0.1
Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Income Tax Contingency [Line Items]      
Income taxes paid $ 45,332,000 $ 44,625,000 $ 42,404,000
Net operating loss carryforwards carried forward indefinitely 110,506,000    
Net operating loss carryforwards subject to expiration 40,834,000    
Valuation allowance $ 27,053,000 $ 25,416,000  
Effective income tax rates 25.60% 27.50% 27.20%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent 13.50% 16.90% 14.80%
Income (Loss) from Continuing Operations before Income Taxes, Foreign $ 132,259,000 $ 117,702,000 $ 173,012,000
Undistributed earnings of foreign subsidiaries 960,000,000 878,225,000  
Estimated change in unrecognized tax benefit in fiscal 2015 284,000    
Tax related interest and penalties $ 112,000 $ 310,000  
Tax Rate of Swiss Subsidiary 5.00% 7.00% 7.00%
Foreign      
Income Tax Contingency [Line Items]      
United States federal net operating loss carryforwards $ 151,340,000    
Valuation allowance 25,298,000 $ 23,710,000  
Federal      
Income Tax Contingency [Line Items]      
United States federal net operating loss carryforwards 1,797,000    
Valuation allowance 1,050,000    
State      
Income Tax Contingency [Line Items]      
United States federal net operating loss carryforwards 33,263,000    
Valuation allowance 705,000 $ 656,000  
Operating loss carryforwards | Foreign      
Income Tax Contingency [Line Items]      
Valuation Allowance, Deferred Tax Asset, Change in the Income Tax Expense (Benefit) (2,001,000)    
Valuation increase (decrease) Foreign current impact and sale of subsidiary $ 413