SEGMENT REPORTING INFORMATION (Details) $ in Thousands		3 Months Ended								12 Months Ended
		Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2018 USD ($) Segment	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)
SEGMENT REPORTING INFORMATION [Abstract]
Minimum percentage of revenues or gross profit (loss) in order for customer group to be identified as reportable segment										10.00%
Number of reportable segments | Segment										2
Segment Reporting Information [Line Items]
Revenues		$ 67,918	$ 59,670	$ 58,854	$ 58,258	$ 58,200	$ 52,772	$ 58,552	$ 57,696	$ 244,700	$ 227,220	$ 218,901
Cost of revenues										111,091	101,375	95,649
Gross profit		$ 37,328	$ 32,176	$ 32,161	$ 31,944	$ 32,182	$ 29,404	$ 32,258	$ 32,001	133,609	125,845	123,252
Other [Member]
Segment Reporting Information [Line Items]
Revenues	[1]									4,242	3,957	3,389
Cost of revenues	[1]									315	217	130
Gross profit	[1]									3,927	3,740	3,259
Reportable Segments [Member] | Medical Market [Member]
Segment Reporting Information [Line Items]
Revenues										38,554	36,602	37,845
Cost of revenues										20,913	19,909	20,223
Gross profit										17,641	16,693	17,622
Reportable Segments [Member] | Veterinary Market [Member]
Segment Reporting Information [Line Items]
Revenues										201,904	186,661	177,667
Cost of revenues										89,863	81,249	75,296
Gross profit										$ 112,041	$ 105,412	$ 102,371

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