XML 40 R25.htm IDEA: XBRL DOCUMENT v3.8.0.1
Accrued Expenses And Current Portion Of Other Long-Term Liabilities (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 30, 2017
Dec. 24, 2016
Sep. 30, 2017
Accrued Expenses And Current Portion Of Other Long-Term Liabilities [Abstract]      
Workers' compensation per occurrence covered under insurance cost $ 750    
General liability 500    
Medical care benefits per person covered under insurance cost 450    
Self insurance reserves 37,400   $ 35,500
Self insurance reserves, current 13,800   13,700
Self insurance reserves, noncurrent 23,600   21,800
Receivable for expected self-insurance recoveries from excess cost insurance 6,600   $ 4,800
Employee insurance expense $ 8,600 $ 9,300