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Subsequent Event	6 Months Ended
Subsequent Event	Jul. 01, 2017
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event Stock Option Exchange As discussed in Note 7. Stock Plan, the Program expired on July 19, 2017. A total of 3.7 million “underwater” stock options were tendered by the Eligible Employees, representing approximately 85% of the stock options eligible for exchange. On July 20, 2017, the Company granted an aggregate of 1.8 million New RSUs under the 2015 Plan in exchange for the “underwater” stock options tendered. The completion of the Program resulted in total incremental unrecognized stock-based compensation expense of approximately $9.5 million, to be recognized over the greater of one year or the remaining vesting service period of the tendered stock options.