REVENUES BY PRODUCT AND SERVICE CATEGORY AND GEOGRAPHIC REGION AND SIGNIFICANT CONCENTRATIONS, Concentration Risk (Details) (Worldwide Revenues [Member])	12 Months Ended
	Mar. 31, 2015 Customer	Mar. 31, 2014 Customer	Mar. 31, 2013 Customer
Concentration Risk [Line Items]
Number of major customers	2	2	1
Abbott Point of Care, Inc [Member]
Concentration Risk [Line Items]
Revenue by major customer (in hundredths)	11.00%	10.00%
MWI Veterinary Supply [Member]
Concentration Risk [Line Items]
Revenue by major customer (in hundredths)	19.00%	19.00%
Animal Health International [Member]
Concentration Risk [Line Items]
Revenue by major customer (in hundredths)			12.00%