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INCOME PER SHARE OF COMMON STOCK (Details) - $ / shares
3 Months Ended 6 Months Ended
Mar. 31, 2018
Apr. 01, 2017
Mar. 31, 2018
Apr. 01, 2017
Exercise Price One [Member]        
INCOME PER SHARE OF COMMON STOCK (Details) [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 64,000 66,000    
Exercise Price Of Common Stock Options Excluded From Computation Of Earnings Per Share $ 12.04 $ 12.04    
Dilutive Securities Included In Computation Of Earnings Per Share Amount     64,000 66,000
Exercise Price Of Common Stock Options Included In Computation Of Earnings Per Share     $ 12.04 $ 12.04
Exercise Price Two [Member]        
INCOME PER SHARE OF COMMON STOCK (Details) [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 156,300 158,800    
Exercise Price Of Common Stock Options Excluded From Computation Of Earnings Per Share $ 14.40 $ 14.40    
Dilutive Securities Included In Computation Of Earnings Per Share Amount     156,300 158,800
Exercise Price Of Common Stock Options Included In Computation Of Earnings Per Share     $ 14.40 $ 14.40
Exercise Price Three [Member]        
INCOME PER SHARE OF COMMON STOCK (Details) [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 193,000 201,500    
Exercise Price Of Common Stock Options Excluded From Computation Of Earnings Per Share $ 22.50 $ 22.50    
Dilutive Securities Included In Computation Of Earnings Per Share Amount     193,000 201,500
Exercise Price Of Common Stock Options Included In Computation Of Earnings Per Share     $ 22.50 $ 22.50