Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Treasury Stock	Noncontrolling Interests in Subsidiaries	Total
Balance at Dec. 29, 2013	$ 428	$ 137,552	$ 2,463	$ 41,297	$ (44,066)	$ 510	$ 138,184
Balance (in shares) at Dec. 29, 2013	41,667
Net income attributable to the Company				73,315		695	74,010
Other comprehensive loss			(1,792)				(1,792)
Cash dividends paid		87		(21,692)			(21,605)
Exercise of stock options	$ 5	5,832					5,837
Exercise of stock options (in shares)	535
Tax effect of equity awards		1,047					1,047
Acquisition of Company common stock					(117,400)		(117,400)
Acquisition of Company common stock (in shares)	(2,562)
Stock-based compensation expense		8,712					8,712
Issuance of restricted stock		(5,443)			5,443
Issuance of restricted stock (in shares)	133
Change in redemption value of noncontrolling interests				(44)			(44)
Reclassification from temporary equity to permanent equity						11,391	11,391
Contributions from noncontrolling interests						1,086	1,086
Distributions to noncontrolling interests						(1,200)	(1,200)
Other		125			364		489
Other (in shares)	9
Balance at Dec. 28, 2014	$ 433	147,912	671	92,876	(155,659)	12,482	98,715
Balance (in shares) at Dec. 28, 2014	39,782
Net income attributable to the Company				75,682		2,409	78,091
Other comprehensive loss			(2,507)				(2,507)
Cash dividends paid		100		(24,834)			(24,734)
Exercise of stock options	$ 3	5,194					5,197
Exercise of stock options (in shares)	320
Tax effect of equity awards		(830)					(830)
Acquisition of Company common stock					(119,793)		(119,793)
Acquisition of Company common stock (in shares)	(1,845)
Stock-based compensation expense		9,423					9,423
Issuance of restricted stock	$ 1	(3,232)			3,231
Issuance of restricted stock (in shares)	151
Change in redemption value of noncontrolling interests				65			65
Contributions from noncontrolling interests						684	684
Distributions to noncontrolling interests						(2,550)	(2,550)
Other		(219)			664		445
Other (in shares)	15
Balance at Dec. 27, 2015	$ 437	158,348	(1,836)	143,789	(271,557)	13,025	42,206
Balance (in shares) at Dec. 27, 2015	38,423
Net income attributable to the Company				102,820		2,607	105,427
Other comprehensive loss			(4,051)				(4,051)
Cash dividends paid		119		(27,898)			(27,779)
Exercise of stock options	$ 3	7,056					7,059
Exercise of stock options (in shares)	334
Tax effect of equity awards		(7)					(7)
Acquisition of Company common stock					(122,381)		(122,381)
Acquisition of Company common stock (in shares)	(2,145)
Stock-based compensation expense		10,123					10,123
Issuance of restricted stock	$ 1	(2,975)			2,974
Issuance of restricted stock (in shares)	58
Change in redemption value of noncontrolling interests				567			567
Contributions from noncontrolling interests						690	690
Distributions to noncontrolling interests						(2,610)	(2,610)
Other		(91)			648		557
Other (in shares)	13
Balance at Dec. 25, 2016	$ 441	$ 172,573	$ (5,887)	$ 219,278	$ (390,316)	$ 13,712	$ 9,801
Balance (in shares) at Dec. 25, 2016	36,683