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WARRANTY RESERVES (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Mar. 31, 2015
Change in accrued warranty reserve [Roll Forward]      
Balance at beginning of period $ 3,156 $ 1,868  
Provision for warranty expense 260 392  
Warranty costs incurred (324) (387)  
Adjustment to pre-existing warranties (223) 0  
Balance at end of period 2,869 1,873  
Non-current portion of warranty reserve 1,547 912 $ 1,733
Current portion of warranty reserve $ 1,322 $ 961 1,423
Instruments [Member] | Minimum [Member]      
Product Warranty Liability [Line Items]      
Period of coverage for standard warranty obligation on instruments 1 year    
Instruments [Member] | Maximum [Member]      
Product Warranty Liability [Line Items]      
Period of coverage for standard warranty obligation on instruments 5 years    
Reagent Discs [Member]      
Change in accrued warranty reserve [Roll Forward]      
Warranty reserve, balance at end of period $ 500   500
Current portion of warranty reserve $ 500   $ 500