LEASES - Components of Lease Expense (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Variable payment operating lease expense	$ 0
Depreciation of ROU assets	534
Interest	347
Total lease expense	1,097
Cost of sales
Lessee, Lease, Description [Line Items]
Operating lease expense	184
Selling and administrative expenses
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 32