Change in Fair Value of Contingent Consideration as Determined by Level 3 Inputs (Detail) (Contingent Consideration, ECP Entwicklungsgesellschaft mbH, Level 3, USD $) In Thousands, unless otherwise specified	9 Months Ended
	Dec. 31, 2014
Contingent Consideration | ECP Entwicklungsgesellschaft mbH | Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 0
Additions	6,000
Payments	0
Change in fair value	365
Ending balance	$ 6,365