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STOCK OPTIONS (Details)
3 Months Ended 9 Months Ended
Jun. 27, 2020
USD ($)
Jun. 29, 2019
USD ($)
$ / shares
shares
Jun. 27, 2020
USD ($)
plan
$ / shares
shares
Jun. 29, 2019
USD ($)
STOCK OPTIONS (Details) [Line Items]        
Granted (in shares) | shares   19,500 266,500  
Exercise price (in USD per share)   $ 12.04 $ 21.90  
Risk free interest rate     1.50%  
Volatility rate     30.30%  
Dividend yield     5.20%  
Expected term     10 years  
Purchase and retirement of treasury stock (in shares) | shares   11,774    
Compensation paid | $     $ 1,000,000  
Stock-based compensation | $ $ 58,000 $ 65,000 113,000 $ 89,000
Unrecognized compensation | $ $ 834,000   $ 834,000  
Unrecognized compensation, period for recognition     3 years 7 months 6 days  
Employee Stock Option        
STOCK OPTIONS (Details) [Line Items]        
Number of stock option plans | plan     2  
Expiration period     10 years  
Granted (in shares) | shares     266,500  
Exercise price (in USD per share)     $ 21.90  
Grant date fair value (in US dollars per share)     $ 3.35  
Tranche One | Employee Stock Option        
STOCK OPTIONS (Details) [Line Items]        
Vesting percentage     50.00%  
Tranche Two | Employee Stock Option        
STOCK OPTIONS (Details) [Line Items]        
Vesting percentage     50.00%  
Stock Option 2010 Plan | Employee Stock Option        
STOCK OPTIONS (Details) [Line Items]        
Granted (in shares) | shares   23,000    
Exercise price (in USD per share)   $ 19.61    
Grant date fair value (in US dollars per share)   $ 3.48    
Share-based payment award granted fair value | $   $ 80,000    
Stock Option 2010 Plan | Tranche One | Employee Stock Option        
STOCK OPTIONS (Details) [Line Items]        
Vesting percentage   50.00%    
Stock Option 2010 Plan | Tranche Two | Employee Stock Option        
STOCK OPTIONS (Details) [Line Items]        
Vesting percentage   50.00%    
Stock Option 2016 Plan | Employee Stock Option        
STOCK OPTIONS (Details) [Line Items]        
Granted (in shares) | shares   11,000    
Exercise price (in USD per share)   $ 20.18    
Grant date fair value (in US dollars per share)   $ 3.55    
Share-based payment award granted fair value | $   $ 39,000    
Stock Option 2016 Plan | Tranche One | Employee Stock Option        
STOCK OPTIONS (Details) [Line Items]        
Vesting percentage   25.00%    
Stock Option 2016 Plan | Tranche Two | Employee Stock Option        
STOCK OPTIONS (Details) [Line Items]        
Vesting percentage   25.00%