CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - (Parenthetical) - shares	3 Months Ended	9 Months Ended
Sep. 29, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Stock options (in shares)	3,000	34,000	282,510	2,219,201
Restricted stock unit vested (in shares)	25,512	7,648	246,599	230,822
Performance-based awards (in shares)			418,491	271,841

Number of share options (or share units) exercised during the current period.

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