v3.7.0.1
Retirement Plans - Change in Projected Benefit Obligations and Change in Plan Assets (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
United States Plans      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation at the beginning of the period $ 17,649 $ 18,059  
Service cost 371 482 $ 400
Interest cost 664 682 673
Benefits paid, inclusive of plan expenses (1,057) (912)  
Plan curtailments and settlements 0 (120)  
Experience loss (945) (542)  
Foreign currency translation adjustment 0 0  
Benefit obligation at the end of the period 16,682 17,649 18,059
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets at the beginning of the period 11,839 12,379  
Actual return on plan assets 1,455 (124)  
Employer contributions 494 496  
Benefits paid, inclusive of plan expenses (1,057) (912)  
Defined Benefit Plan, Settlements and Curtailments, Plan Assets 0 0  
Foreign currency translation adjustment 0 0  
Fair value of plan assets at the end of the period 12,731 11,839 12,379
Funded status deficit (3,951) (5,810)  
International Plans      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation at the beginning of the period 69,134 72,091  
Service cost 871 820 767
Interest cost 1,848 1,904 2,546
Benefits paid, inclusive of plan expenses (1,982) (1,944)  
Plan curtailments and settlements (17) 0  
Experience loss 11,863 (4,144)  
Foreign currency translation adjustment (7,239) 407  
Benefit obligation at the end of the period 74,478 69,134 72,091
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets at the beginning of the period 32,314 34,401  
Actual return on plan assets 6,669 (591)  
Employer contributions 1,640 1,504  
Benefits paid, inclusive of plan expenses (1,982) (1,944)  
Defined Benefit Plan, Settlements and Curtailments, Plan Assets 17 0  
Foreign currency translation adjustment (4,301) (1,056)  
Fair value of plan assets at the end of the period 34,323 32,314 $ 34,401
Funded status deficit $ (40,155) $ (36,820)