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Income Taxes - Schedule of Components of Deferred Income Tax Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Sep. 30, 2019
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Income Tax Disclosure [Abstract] |  |
Gross assets | $ 18,326 | $ 18,851
Gross liabilities and valuation allowance | (14,682) | (13,734)
Net deferred income tax asset | $ 3,644 | $ 5,117

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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120406818&loc=d3e31931-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=120406818&loc=d3e31917-109318 + Details
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