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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]          
Incentive from Lessor         $ 2,000
Deferred rent credit $ 1,000   $ 1,000    
Operating leases          
Total 20,378   20,378    
2017 1,317   1,317    
2018 4,806   4,806    
2019 4,473   4,473    
2020 4,475   4,475    
2021 4,546   4,546    
More than 5 Years 761   761    
Purchase commitments          
Total 2,940   2,940    
2017 45   45    
2018 681   681    
2019 576   576    
2020 546   546    
2021 546   546    
More than 5 Years 546   546    
Capital leases          
Total 43   43    
2017 11   11    
2018 32   32    
2019      
2020      
2021      
More than 5 Years      
Total          
Total 23,361   23,361    
2017 1,373   1,373    
2018 5,519   5,519    
2019 5,049   5,049    
2020 5,021   5,021    
2021 5,092   5,092    
More than 5 Years 1,307   1,307    
Rent expense $ 1,500 $ 1,200 $ 4,100 $ 3,600