Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

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Stock-Based Compensation (Narrative) (Details) - USD ($)
3 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Allocated share-based compensation expense $ 500,000 $ 600,000
Performance Shares    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vested in the period (shares) 92,068 53,248
Restricted Stock Units (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vested in the period (shares) 54,602 8,438
Stock issued (in shares) 72,138  
Number of shares payable in cash (in shares) 19,930  
2010 Stock Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Aggregate number of shares that may be delivered (shares) 500,000  
Total compensation cost not yet recognized $ 4,100,000  
Period for recognition 3 years  
Option Plan | Stock Options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Allocated share-based compensation expense $ 0 $ 0
Vest Upon Filing of 10-K for the Year Ending September 28, 2019    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vested in the period (shares) 55,750