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Income Taxes - Net operating loss (Details) - USD ($) $ in Millions | Sep. 30, 2018 | Sep. 30, 2017
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State |  |
Operating loss carryforward |  |
Net operating loss | $ 23.8 | $ 21.2

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
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