Employee Benefit Plans - Schedule of Stock Option Activity under Share-Based Compensation Plans (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Compensation and Retirement Disclosure [Abstract]
Outstanding, beginning of year, Shares	3,086	3,113	3,112
Granted, Shares	10	470	437
Exercised, Shares	(237)	(117)	(73)
Cancelled, Shares	(424)	(380)	(363)
Outstanding, end of year, Shares	2,435	3,086	3,113
Options exercisable at year end, Shares	1,901	2,195	2,209
Outstanding, beginning of year, Wt. Avg. Ex. Price	$ 11.93	$ 12.62	$ 13.01
Granted, Wt. Avg. Ex. Price	$ 12.58	$ 9.83	$ 10.50
Exercised, Wt. Avg. Ex. Price	$ 8.43	$ 7.55	$ 8.26
Cancelled, Wt. Avg. Ex. Price	$ 15.37	$ 16.37	$ 14.29
Outstanding, end of year, Wt. Avg. Ex. Price	$ 11.67	$ 11.93	$ 12.62
Options exercisable at year end, Wt. Avg. Ex. Price	$ 12.08	$ 12.46	$ 13.52