Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 24, 2017	Sep. 30, 2018	Sep. 24, 2017
Basic (loss) earnings per common share:
Net (loss) income attributable to the Company	$ (13,033)	$ 21,817	$ 15,495	$ 73,783
Change in noncontrolling interest redemption value		237		1,419
Net income attributable to participating securities		(89)	(147)	(305)
Net (loss) income attributable to common shareholders	$ (13,033)	$ 21,965	$ 15,348	$ 74,897
Weighted average common shares outstanding	31,573	36,146	32,265	36,563
Basic (loss) earnings per common share	$ (0.41)	$ 0.61	$ 0.48	$ 2.05
Diluted (loss) earnings per common share:
Net (loss) income attributable to common shareholders	$ (13,033)	$ 21,965	$ 15,348	$ 74,897
Weighted average common shares outstanding	31,573	36,146	32,265	36,563
Dilutive effect of outstanding equity awards		435	224	484
Diluted weighted average common shares outstanding	31,573	36,581	32,489	37,047
Diluted (loss) earnings per common share	$ (0.41)	$ 0.60	$ 0.47	$ 2.02
Weighted average antidilutive awards excluded from computation of earnings per share		328	1,209	261