SEGMENT REPORTING INFORMATION (Details) $ in Thousands		3 Months Ended								12 Months Ended
		Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2016 USD ($) Segment	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)
SEGMENT REPORTING INFORMATION [Abstract]
Number of reportable segments | Segment										2
Segment Reporting Information [Line Items]
Revenues		$ 56,960	$ 52,876	$ 55,975	$ 53,090	$ 52,017	$ 56,051	$ 50,471	$ 44,054	$ 218,901	$ 202,593	$ 162,031
Cost of revenues										95,649	93,623	78,081
Gross profit		$ 32,296	$ 29,602	$ 31,962	$ 29,392	$ 28,408	$ 28,783	$ 28,076	$ 23,703	123,252	108,970	83,950
Medical Market [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Revenues										37,845	35,364	28,134
Cost of revenues										19,832	18,730	15,623
Gross profit										18,013	16,634	12,511
Veterinary Market [Member] | Reportable Segments [Member]
Segment Reporting Information [Line Items]
Revenues										177,667	164,018	130,859
Cost of revenues										75,688	74,752	62,350
Gross profit										101,979	89,266	68,509
Other Market [Member]
Segment Reporting Information [Line Items]
Revenues	[1]									3,389	3,211	3,038
Cost of revenues	[1]									129	141	108
Gross profit	[1]									$ 3,260	$ 3,070	$ 2,930

[1] Represents unallocated items, not specifically identified to any particular business segment.