Employee Benefit Plans (Multi-Employer Pension Plan) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 27, 2014		Dec. 28, 2013	Dec. 29, 2012
Multiemployer Plans [Line Items]
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Participants	14.00%
Multiemployer Plans, Certified Zone Status	Red		Red
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	Implemented	[1]
Contributions	$ 279	[2]	$ 279	$ 256
Multiemployer Plans, Surcharge	Yes	[1]
Multiemployer Plans, Collective-Bargaining Arrangement, Expiration Date	Jun. 03, 2017
Multiemployer Plans, Employer Contribution Rate Per Hour	0.47
Multiemployer Plans, Contribution Rate Increase (Decrease)	0.03
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	$ 300

[1] The collective-bargaining agreement requires the Company to contribute to the plan at the rate of $0.47 per compensated hour for each covered employee. The Company will make additional contributions, as mandated by law, in accordance with the fund's 2010 Rehabilitation Plan which requires a surcharge equal to $0.03 per hour (from $0.47 to $0.50) effective June 1, 2014 to May 31, 2015. Based upon current employment and benefit levels, the Company's contributions to the multi-employer pension plan are expected to be approximately $300 for 2015.

[2] The Company's contributions to the plan do not represent more than 5% of the total contributions to the plan for the most recent plan year available.