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Reconciliation of the Total Amounts of Unrecognized Tax Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2017 | Sep. 30, 2016
Income Tax Disclosure [Abstract] |  |
Unrecognized Tax Liabilities, Beginning Balance | $ 1 | $ 75
Change in prior year tax positions | (1) | (70)
Settlements with taxing authorities | $ 0 |
Lapse of statute of limitations |  | (4)
Unrecognized Tax Liabilities, Ending Balance |  | $ 1

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- Definition Amount of increase and decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References No definition available. + Details
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- Definition Amount of increase and decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=84176650&loc=SL37586934-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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