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DEBT (Details)
$ in Millions
6 Months Ended
Mar. 31, 2018
USD ($)
item
Revolving credit facility  
Letter of credit issued for worker's compensation insurance carrier as part of the entity's self-insured loss control program $ 0.5
Real Estate Loan  
Revolving credit facility  
Number of cross defaults | item 0
Facility  
Revolving credit facility  
Revolving credit limit $ 70.0
Increase in borrowing capacity available under loan accordion 25.0
Additional credit advances for certain inventory purchases $ 10.0
Automatic renewal period of agreement unless terminated 1 year
Unused commitment fee (as a percent) 0.25%
Period considered for computing fixed charge coverage ratio 12 months
Threshold of excess availability of credit as a percentage of maximum loan limit, required for financial covenant compliance 10.00%
Restricted amount of dividends on common stock $ 2.0
Facility | LIBOR  
Revolving credit facility  
Variable rate basis LIBOR
Facility | Prime rate  
Revolving credit facility  
Variable rate basis prime rate
Facility | Minimum  
Revolving credit facility  
Notice period prior to the end of any original or renewal term of the agreement required for terminating the agreement either by the borrower or lender 90 days
Fixed charge coverage ratio 1.0
Facility | Minimum | LIBOR  
Revolving credit facility  
Basis points added to reference rate (as a percent) 1.25%
Facility | Maximum | LIBOR  
Revolving credit facility  
Basis points added to reference rate (as a percent) 1.50%