Description of Business and Summary of Significant Accounting Policies (Cash and Cash Equivalents, Trade Receivables and Concentrations of Credit Risk) (Details) (Client Concentration Risk [Member])	12 Months Ended
	Dec. 27, 2014 customers
Client Concentration Risk [Member]
Composition of trade receivables
Number of clients representing large percentage of sales or trade receivables	0
Max percentage, clients representing large percentage of sales or trade receivables	5.00%