REVENUES BY PRODUCT CATEGORY AND GEOGRAPHIC REGION AND SIGNIFICANT CONCENTRATIONS, Revenue by Product (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue from External Customer [Line Items]
Product sales, net		$ 58,552	$ 55,975	$ 116,248	$ 109,028
Development and licensing revenues		0	0	0	37
Total revenues		58,552	55,975	116,248	109,065
Instruments [Member]
Revenue from External Customer [Line Items]
Product sales, net	[1]	9,823	11,597	19,922	20,309
Consumables [Member]
Revenue from External Customer [Line Items]
Product sales, net	[2]	45,512	41,675	90,201	83,472
Other Products [Member]
Revenue from External Customer [Line Items]
Product sales, net	[3]	$ 3,217	$ 2,703	$ 6,125	$ 5,247

[1] Instruments include chemistry analyzers, hematology instruments, VSpro specialty analyzers and i STAT analyzers.

[2] Consumables include reagent discs, hematology reagent kits, VSpro specialty cartridges, i STAT cartridges and rapid tests.

[3] Other products include products using the Orbos process and extended maintenance agreements.