INCOME TAXES - Additional Information (Details) - USD ($)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Deferred Income Taxes [Line Items]
Federal and net operating loss carryforward	$ 84,283,000
State net operating loss carryforward	35,836,000
Federal research and development credits	1,104,000
State investment tax credits	416,000
Increased in valuation allowance	1,431,000	$ 3,505,000
Maximum
Deferred Income Taxes [Line Items]
Operating loss carryforwards limitations on use amount	1,103,000
Minimum
Deferred Income Taxes [Line Items]
Operating loss carryforwards limitations on use amount	$ 94,000