Restructuring - Schedule of Restructuring Charges and Cash Payments (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost And Reserve [Line Items]
Accrued restructuring balance	$ 199	$ 974
Charges to operations	872	2,338
Cash payments	(858)	(1,928)
Other adjustments	(213)
Accrued restructuring balance		1,384
Severance Pay and Benefits
Restructuring Cost And Reserve [Line Items]
Accrued restructuring balance	145	680
Charges to operations	849	2,377
Cash payments	(821)	(1,673)
Other adjustments	(173)
Accrued restructuring balance		1,384
Facility Exit Costs
Restructuring Cost And Reserve [Line Items]
Accrued restructuring balance	54	294
Charges to operations	23	(39)
Cash payments	(37)	(255)
Other adjustments	(40)
Accrued restructuring balance