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Retirement Plans	12 Months Ended
Retirement Plans	Dec. 27, 2016
Retirement Plans [Abstract]
Retirement Plans	(7) Retirement Plans We provide two retirement benefit plans to participants. The salary-reduction plans are provided through a qualified 401(k) plan and a nonqualified deferred compensation plan (the Plans). Under the Plans, employees who meet minimum service requirements and elect to participate may make contributions of up to 15% of their annual salaries under the 401(k) plan and up to 80% under the deferred-compensation plan. We may make additional contributions at the discretion of the Board of Directors. Expenses related to the Plans for the fiscal years ended December 27, 2016, December 29, 2015 and December 30, 2014 totaled $1.3 million, $2.2 million, and $1.7 million, respectively.