Equity and Redeemable Noncontrolling Interest Earnings Per Share (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Numerator:
Net income from continuing operations attributable to common shareholders	$ 150,263	$ 128,424	$ 104,093
Loss from discontinued operations, net of income taxes	(950)	(1,726)	(1,265)
Net income attributable to common shareholders	$ 149,313	$ 126,698	$ 102,828
Denominator:
Weighted-average shares outstanding—Basic	46,496	46,627	47,740
Effect of dilutive securities:
Stock options, restricted stock units, performance share units and restricted stock	1,138	931	749
Weighted-average shares outstanding—Diluted	47,634	47,558	48,489