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WARRANTY RESERVES (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Mar. 31, 2016
Change in accrued warranty reserve [Roll Forward]      
Balance at beginning of period $ 3,208 $ 3,156  
Provision for warranty expense 759 260  
Warranty costs incurred (391) (324)  
Adjustment to pre-existing warranties 0 (223)  
Balance at end of period 3,576 2,869  
Non-current portion of warranty reserve 2,232 1,547 $ 1,927
Current portion of warranty reserve $ 1,344 $ 1,322 1,281
Instruments [Member] | Minimum [Member]      
Product Warranty Liabilities [Line Items]      
Period of coverage for standard warranty obligation on instruments 1 year    
Instruments [Member] | Maximum [Member]      
Product Warranty Liabilities [Line Items]      
Period of coverage for standard warranty obligation on instruments 5 years    
Reagent Discs [Member]      
Change in accrued warranty reserve [Roll Forward]      
Current portion of warranty reserve $ 500   $ 500