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ACQUISITION OF FEMTOLASERS (Details 4) - FEMTOLASERS - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 27, 2014
Oct. 03, 2015
Sep. 27, 2014
ACQUISITIONS OF FEMTOLASERS      
Pro forma increase (decrease) in amortization expense $ 0.1   $ 0.4
Transaction costs excluded from pro forma net income   $ 0.4