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SEGMENT REPORTING INFORMATION (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2017
USD ($)
Segment
Sep. 30, 2016
USD ($)
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 $ 58,854 $ 58,552 $ 117,112 $ 116,248
Cost of revenues 26,693 26,294 53,007 51,989
Gross profit 32,161 32,258 64,105 64,259
Other [Member]        
Segment Reporting Information [Line Items]        
Revenues [1] 1,036 881 2,064 1,749
Cost of revenues [1] 81 37 124 118
Gross profit [1] 955 844 1,940 1,631
Reportable Segments [Member] | Medical Market [Member]        
Segment Reporting Information [Line Items]        
Revenues 9,282 9,381 18,144 18,478
Cost of revenues 5,101 5,133 10,065 9,987
Gross profit 4,181 4,248 8,079 8,491
Reportable Segments [Member] | Veterinary Market [Member]        
Segment Reporting Information [Line Items]        
Revenues 48,536 48,290 96,904 96,021
Cost of revenues 21,511 21,124 42,818 41,884
Gross profit $ 27,025 $ 27,166 $ 54,086 $ 54,137
[1] Represents unallocated items, not specifically identified to any particular business segment.