Condensed Consolidated Statement of Shareholders' Deficit (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Paid-in Capital [Member]	(Deficit) [Member]	Accumulated Other Comprehensive Loss, Net [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect adjustment recognized upon adoption of Topic 606	$ (15,446)				$ (15,446)
Balance at Dec. 27, 2017	$ (97,360)	$ 1,077	$ (355,626)	$ 594,166	(334,661)	$ (2,316)
Balance, common stock, shares issued at Dec. 27, 2017	107,740	107,740
Balance, treasury stock, at cost, shares at Dec. 27, 2017	(43,151)		(43,151)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 21,385				21,385
Other comprehensive loss	299					299
Share-based compensation on equity classified awards	1,076			1,076
Purchase of treasury stock	(28,844)		$ (28,844)
Purchase of treasury stock (in shares)			(1,863)
Issuance of common stock for share-based compensation	0	$ 4		(4)
Issuance of common stock for share-based compensation (in shares)		444
Exercise of common stock options	1,013	$ 3		1,010
Exercise of common stock options (in shares)		286
Balance at Jun. 27, 2018	$ (117,877)	$ 1,084	$ (384,470)	$ 596,248	$ (328,722)	$ (2,017)
Balance, common stock, shares issued at Jun. 27, 2018	108,470	108,470
Balance, treasury stock, at cost, shares at Jun. 27, 2018	(45,014)		(45,014)