Earnings per Share (Details) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 25, 2016 USD ($) $ / shares	Sep. 25, 2016 USD ($) $ / shares	Jun. 26, 2016 USD ($) $ / shares	Mar. 27, 2016 USD ($) $ / shares	Dec. 27, 2015 USD ($) $ / shares	Sep. 27, 2015 USD ($) $ / shares	Jun. 28, 2015 USD ($) $ / shares	Mar. 29, 2015 USD ($) $ / shares	Dec. 25, 2016 USD ($) item $ / shares shares	Dec. 27, 2015 USD ($) $ / shares shares	Dec. 28, 2014 USD ($) $ / shares shares
Earnings per Share
Number of joint ventures for which the increase in redemption value for the noncontrolling interest reduces income attributable to common shareholders | item									1
Basic earnings per common share:
Net income attributable to the Company | $	$ 32,630	$ 21,467	$ 22,541	$ 26,182	$ 24,695	$ 17,971	$ 10,780	$ 22,236	$ 102,820	$ 75,682	$ 73,315
Decrease (increase) in noncontrolling interest redemption value | $									567	65	(44)
Net income attributable to participating securities | $									(420)	(325)	(402)
Net income attributable to common shareholders | $									$ 102,967	$ 75,422	$ 72,869
Weighted average common shares outstanding | shares									37,253,000	39,458,000	40,960,000
Basic earnings per common share | $ / shares	$ 0.89	$ 0.57	$ 0.61	$ 0.69	$ 0.63	$ 0.46	$ 0.27	$ 0.56	$ 2.76	$ 1.91	$ 1.78
Diluted earnings per common share:
Net income attributable to common shareholders | $									$ 102,967	$ 75,422	$ 72,869
Weighted average common shares outstanding | shares									37,253,000	39,458,000	40,960,000
Dilutive effect of outstanding equity awards | shares									355,000	542,000	758,000
Diluted weighted average common shares outstanding | shares									37,608,000	40,000,000	41,718,000
Diluted earnings per common share | $ / shares	$ 0.88	$ 0.57	$ 0.61	$ 0.69	$ 0.62	$ 0.45	$ 0.27	$ 0.55	$ 2.74	$ 1.89	$ 1.75
Weighted average antidilutive awards excluded from computation of earnings per share | shares									331,000	251,000	226,000