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Derivative Financial Instruments (Tables) | 6 Months Ended
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Mar. 31, 2019
Derivative Instruments And Hedging Activities Disclosure [Abstract] |
Gross Fair Value of all Derivative Instruments | The following table summarizes the gross fair value of all derivative instruments, which are not designated as hedging instruments and their location in the consolidated balance sheets (in thousands).
Derivative Instrument |  | Location |  | March 31, 2019 |  |  | September 30, 2018 |
Foreign Currency Forward Contracts |  | Accrued Expenses and Other Current Liabilities |  | $ | 41 |  |  | $ | 270 |
Company's Derivatives on Consolidated Financial Statements of Operations | The following table summarizes the Company’s realized gains on derivative instruments included in the consolidated statements of operations for the three and six months ended March 31, 2019 and 2018 (in thousands):
|  |  |  | Three Months Ended |  |  | Six Months Ended |
Derivative Instrument |  | Location |  | March 31, 2019 |  |  | March 31, 2018 |  |  | March 31, 2019 |  |  | March 31, 2018 |
Foreign Currency Forward Contracts |  | Other Income (Expense) |  | $ | 217 |  |  | $ | 733 |  |  | $ | 639 |  |  | $ | 575 |

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624181-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959 + Details
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