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ACQUISITIONS (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Apr. 04, 2016
Jun. 30, 2017
Jul. 01, 2016
Jun. 30, 2017
Jul. 01, 2016
Sep. 30, 2016
Oct. 02, 2015
Business Acquisition [Line Items]              
Goodwill   $ 11,201,000 $ 11,508,000 $ 11,201,000 $ 11,508,000 $ 11,196,000 $ 14,292,000
Goodwill impairment loss   0 6,197,000 $ 0 6,197,000    
Weighted average useful life       7 years 6 months      
Transaction costs         588,000    
SeaBear              
Business Acquisition [Line Items]              
Business acquisition date       Oct. 27, 2015      
Goodwill   2,219,000   $ 2,219,000      
Northport              
Business Acquisition [Line Items]              
Business acquisition date       Apr. 04, 2016      
Segregated indemnification escrow amount $ 500,000            
Period of time from acquisition date for indemnity claims       24 months      
Goodwill 827,000            
Business combination, contingent consideration, liability $ 250,000            
SeaBear And Northport              
Business Acquisition [Line Items]              
Goodwill   $ 3,046,000   $ 3,046,000      
Diving              
Business Acquisition [Line Items]              
Goodwill     0   $ 0    
Goodwill impairment loss     $ 6,197,000