INCOME TAXES - Additional Information (Details) - USD ($)	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2020
Deferred Income Taxes [Line Items]
Federal and net operating loss carryforward		$ 72,475,000
State net operating loss carryforward		46,066,000
Federal research and development credits		840,000
State investment tax credits		345,000
Change in valuation allowance	$ 1,350,000
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