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CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares | 3 Months Ended | 6 Months Ended
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Jun. 29, 2019 | Jun. 30, 2018 | Jun. 29, 2019 | Jun. 30, 2018
Statement of Stockholders' Equity [Abstract] |  |  |  |
Purchase of treasury shares, shares acquired (in shares) | 236,323 | 203,869 | 306,729 | 305,256
Stock plan exercises; shares acquired (in shares) | 645 | 2,390 | 6,096 | 11,938
Stock options exercised; shares issued (in shares) | 2,642 | 18,309 | 15,637 | 46,213
Stock awards; shares issued (in shares) | 2,692 | 5,852 | 10,327 | 7,692
Cash dividends declared per share (in dollars per share) | $ 0.375 | $ 0.375 | $ 0.75 | $ 0.75

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