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(12) Allowance for Doubtful Accounts
 12 Months Ended
Dec. 30, 2017
Receivables [Abstract]  
(12) Allowance for Doubtful Accounts

(12) Allowance for Doubtful Accounts

Activity in the allowance for doubtful account was as follows for fiscal years 2017, 2016, and 2015:

                      
     2017      2016      2015  
                      
Beginning balance  $10,000   $10,000   $10,000 
                
Provision for bad debt   —      —      —   
                
Charge-offs   —      —      —   
                
Ending balance  $10,000   $10,000   $10,000