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STOCK-BASED COMPENSATION - Summary of Restricted Stock Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Dec. 28, 2018
Dec. 29, 2017
Number of Non-vested Shares [Roll Forward]    
Vested (in shares) (4,439)  
Wgtd. Avg. Grant Date Fair Value [Roll Forward]    
Granted (in dollars per share) $ 0.00  
Restricted Stock [Member]    
Number of Non-vested Shares [Roll Forward]    
Outstanding, beginning of period (in shares) 103,233 109,695
Granted (in shares) 0 0
Vested (in shares)   (3,498)
Shares withheld for payment of taxes upon vesting of restricted stock (in shares) (3,061) (1,502)
Forfeited (in shares) (1,400) (7,700)
Outstanding, end of period (in shares) 94,333 96,995
Wgtd. Avg. Grant Date Fair Value [Roll Forward]    
Outstanding, beginning of period (in dollars per share) $ 4.08 $ 4.01
Granted (in dollars per share)   0.00
Vested (in dollars per share) 3.60 3.60
Shares withheld for payment of taxes upon vesting of restricted stock (in dollars per share) 3.60 3.60
Forfeited (in dollars per share) 4.13 4.18
Outstanding, end of period (in dollars per share) $ 4.12 $ 4.02
For non-vested shares    
Expense not yet recognized (000s) $ 274 $ 272
Weighted average remaining years for vesting 1 year 6 months 18 days 1 year 6 months
For shares vested    
Aggregate fair value on vesting dates (000s) $ 40 $ 23