FAIR VALUE MEASUREMENTS - Reconciliation of Changes in Fair Value of Level Three Financial Assets (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Payments	$ 841	$ 3,197
Fair value, measurements, recurring | Contingent Purchase Consideration
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	(5,087)
Change in fair value (included within research and development expense)	27
Payments	841
Balance at end of period	(4,219)
Fair value, measurements, recurring | Contingent Contractual Non-compliance Liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	(246)
Change in fair value (included within research and development expense)	148
Payments	0
Balance at end of period	$ (98)