Debt - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Aug. 03, 2015
Debt Instrument [Line Items]
Deferred debt fees expensed	$ 1,250	$ 587
MidCap Financial Trust [Member] | Secured Credit Facility Agreement [Member]
Debt Instrument [Line Items]
Drew down with new secured bank facility agreement			$ 30,000
Facility repayable period	4 years
Margin over LIBOR rate	6.70%
Long-term debt repayable terms	The facility is repayable over a four year period with no repayments until March 1, 2017 when the first of 30 equal monthly repayments is due. If the Company achieves CE Mark approvals for the MosaiQTM instrument and blood grouping consumable, the facility is repayable over a four year period with no repayments until September 1, 2017 when the first of 24 equal monthly repayments is due.
Facility bears interest	LIBOR plus 6.7%
LIBOR rate applicable terms	LIBOR rate applicable is the higher of the actual market rate from time to time or 2.0%.
MidCap Financial Trust [Member] | Secured Credit Facility Agreement [Member] | Other Expense [Member]
Debt Instrument [Line Items]
Deferred debt fees expensed	$ 600