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COMMITMENTS AND CONTINGENCIES - Movements in Warranty Accrual for Period (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2018
Apr. 01, 2017
Mar. 31, 2018
Apr. 01, 2017
Warranty Provision Roll Forward:        
Warranty provision—beginning of period $ 4,206 $ 4,560 $ 4,124 $ 3,827
Warranties issued 135 991 435 2,533
Warranties utilized or expired (243) (901) (516) (1,505)
Currency translation and other adjustments 51 9 106 (196)
Warranty provision—end of period $ 4,149 $ 4,659 $ 4,149 $ 4,659