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INCOME TAXES - Components of deferred tax assets (Details 2) - USD ($) | Sep. 30, 2018 | Sep. 30, 2017
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Deferred tax assets (liabilities): |  |
Stock based compensation | $ 1,947,000 | $ 2,836,000
Depreciation and amortization | 339,000 | 500,000
Net operating loss carry forward | 13,248,000 | 16,143,000
Tax credits | 944,000 | 521,000
Other | 69,000 | 52,000
Less: valuation allowance | (16,547,000) | (20,052,000)
Net deferred tax asset | $ 0 | $ 0

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