Consolidated Statements of Changes in Equity - USD ($)	Total	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redeemable noncontrolling interest	$ 0
Beginning Balance at Dec. 31, 2013	699,892,000	$ 3,000	$ 0	$ (546,570,000)	$ 196,908,000	$ 1,049,884,000	$ (333,000)
Ending Balance at Dec. 30, 2014	736,184,000	$ 3,000	$ 0	$ (706,073,000)	214,437,000	1,229,177,000	(1,360,000)
Beginning Balance, Shares (in shares) at Dec. 31, 2013		26,290,000	1,382,000	4,283,000
Ending Balance, Shares (in shares) at Dec. 30, 2014		25,443,000	1,382,000	5,261,000
Comprehensive income:
Net Income (loss)	179,293,000				0	179,293,000	0
Net Income (Loss)	0
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss)	(1,027,000)				0	0	(1,027,000)
Issuance of common stock	3,247,000	$ 0	$ 0	$ 0	3,247,000	0	0
Issuance of common stock (in shares)		23,000	0	0
Stock-based Compensation Expense	10,077,000				10,077,000	0	0
Repurchase of common stock		(978,000)	0
Repurchase of common stock	(159,503,000)	$ 0	$ 0	$ (159,503,000)	0	0	0
Repurchase of common stock				978,000
Tax Benefit from Exercise of Stock Options	3,089,000				3,089,000	0	0
Distribution to redeemable noncontrolling interest	0
Stockholders' Equity, Other Shares		108,000	0	0
Stockholders' Equity, Other	1,116,000	$ 0	$ 0	$ 0	1,116,000	0	0
Redeemable noncontrolling interest	0
Ending Balance at Dec. 29, 2015	497,300,000	$ 3,000	$ 0	$ (1,111,586,000)	235,393,000	1,378,519,000	(5,029,000)
Ending Balance, Shares (in shares) at Dec. 29, 2015		23,346,000	1,382,000	7,490,000
Comprehensive income:
Net Income (loss)	149,342,000				0	149,342,000	0
Net Income (Loss)	(17,000)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss)	(3,669,000)				0	0	(3,669,000)
Issuance of common stock	3,527,000	$ 0	$ 0	$ 0	3,527,000	0	0
Issuance of common stock (in shares)		23,000	0	0
Stock-based Compensation Expense	15,086,000				15,086,000	0	0
Repurchase of common stock		(2,229,000)	0
Repurchase of common stock	(405,513,000)	$ 0	$ 0	$ (405,513,000)	0	0	0
Repurchase of common stock				2,229,000
Tax Benefit from Exercise of Stock Options	2,057,000				2,057,000	0	0
Distribution to redeemable noncontrolling interest	0
Redeemable noncontrolling interest, acquired	3,998,000
Stockholders' Equity, Other Shares		109,000	0	0
Stockholders' Equity, Other	286,000	$ 0	$ 0	$ 0	286,000	0	0
Redeemable noncontrolling interest	3,981,000
Ending Balance at Dec. 27, 2016	288,787,000	$ 3,000	$ 0	$ (1,488,779,000)	257,594,000	1,524,093,000	(4,124,000)
Ending Balance, Shares (in shares) at Dec. 27, 2016		21,577,000	1,382,000	9,333,000
Comprehensive income:
Net Income (loss)	145,574,000				0	145,574,000	0
Net Income (Loss)	(333,000)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss)	905,000				0	0	905,000
Issuance of common stock	3,702,000	$ 0	$ 0	$ 0	3,702,000	0	0
Issuance of common stock (in shares)		22,000	0	0
Stock-based Compensation Expense	15,662,000				15,662,000	0	0
Repurchase of common stock		(1,843,000)	0
Repurchase of common stock	(377,193,000)	$ 0	$ 0	$ (377,193,000)	0	0	0
Repurchase of common stock				1,843,000
Tax Benefit from Exercise of Stock Options	2,456,000				2,456,000	0	0
Distribution to redeemable noncontrolling interest	(45,000)
Stockholders' Equity, Other Shares		52,000	0	0
Stockholders' Equity, Other	381,000	$ 0	$ 0	$ 0	$ 381,000	$ 0	$ 0
Redeemable noncontrolling interest	$ 3,603,000