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Income Taxes (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2016 | Sep. 30, 2015
Valuation Allowance, Deferred Tax Asset, Change in Amount | $ (132) |
Income tax expense | $ 996 | $ 226
Effective Income Tax Rate, Continuing Operations | 27.70% | 1414.10%
Deferred Tax Assets, Valuation Allowance | $ 3,180 | $ 3,048
Tax Credit Carryforward, Amount | 417 |
Deferred Tax Assets, Other Tax Carryforwards | 58 |
Undistributed Earnings of Foreign Subsidiaries | 1,100 | 2,500
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 202 |
Accrued penalties and interest | 7 | 18
State |  |
Valuation Allowance, Deferred Tax Asset, Change in Amount | 59 |
Operating Loss Carryforwards | 400 | $ 400
U.K. |  |
Operating Loss Carryforwards | $ 8,500 |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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