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Concentrations of Credit Risk	12 Months Ended
Concentrations of Credit Risk	Dec. 31, 2016
Concentrations of Credit Risk
Concentrations of Credit Risk	16. Concentrations of Credit Risk The Company maintains amounts on account with financial institutions, which at times may exceed federally insured limits. The Company has not experienced any losses on such accounts. Our primary concentration of credit risk is related to certain trade accounts receivable. In the normal course of business, we extend unsecured credit to our customers. We investigate a customer’s credit worthiness before extending credit. At December 31, 2016 and December 26, 2015, three customers accounted for 28% of accounts receivable.