INCOME TAXES - Deferred Income Taxes (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Federal and state net operating loss carryforward	$ 3,194	$ 4,945
Alternative minimum tax credit carryforward	0	517
Depreciation and fixed assets	(213)	268
New York State investment tax and other credits	1,419	1,396
Inventories	876	476
Deferred gain on sale-leaseback	466	452
Research and development credit	440	319
Section 481(a) adjustment	(64)	(96)
Other	141	273
Total deferred tax asset before allowance	6,259	8,550
Other	(1,419)	(1,396)
Total deferred tax asset before allowance	$ 4,840	$ 7,154

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from a gain reported for tax purposes on sale and leaseback transactions in accordance with enacted tax laws.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from in-process research and development costs expensed in connection with a business combination.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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