Summary of Change in Plant Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at the beginning of the period	$ 14,040	$ 11,903
Service cost	349	285	250
Interest cost	649	668	646
Benefits paid, inclusive of plan expenses	(664)	(615)
Experience loss	1,537	1,799
Benefit obligation at the end of the period	15,911	14,040	11,903
Fair value of plan assets at the beginning of the period	9,192	8,746
Actual return on plan assets	843	420
Employer contributions	963	641
Benefits paid, inclusive of plan expenses	(664)	(615)
Fair value of plan assets at the end of the period	10,334	9,192	8,746
Funded status deficit	(5,577)	(4,848)
International Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at the beginning of the period	53,895	48,881
Service cost	679	645	603
Interest cost	2,377	2,504	2,503
Benefits paid, inclusive of plan expenses	(1,667)	(1,709)
Plan settlements		(40)
Experience loss	7,099	5,442
Foreign currency translation adjustment	(2,507)	(1,828)
Benefit obligation at the end of the period	59,876	53,895	48,881
Fair value of plan assets at the beginning of the period	26,942	25,779
Actual return on plan assets	4,024	1,555
Employer contributions	1,639	1,505
Benefits paid, inclusive of plan expenses	(1,667)	(1,709)
Plan settlements		(40)
Foreign currency translation adjustment	(1,470)	(148)
Fair value of plan assets at the end of the period	29,468	26,942	25,779
Funded status deficit	$ (30,408)	$ (26,953)