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Equity and Redeemable Noncontrolling Interest - Earnings Per Share (Details) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jul. 01, 2017
Jun. 25, 2016
Jul. 01, 2017
Jun. 25, 2016
Numerator:        
Income from continuing operations, net of income taxes $ 54,673 $ 35,545 $ 101,636 $ 73,120
Income (loss) from discontinued operations, net of income taxes (71) 12 (75) (14)
Less: Net income attributable to noncontrolling interests 650 350 831 756
Net income attributable to common shareholders $ 53,952 $ 35,207 $ 100,730 $ 72,350
Denominator:        
Weighted-average shares outstanding—Basic (in shares) 47,591 47,061 47,569 46,852
Effect of dilutive securities:        
Stock options, restricted stock units, performance share units and restricted stock (in shares) 751 858 835 939
Weighted-average shares outstanding—Diluted (in shares) 48,342 47,919 48,404 47,791