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Composition of Certain Financial Statement Captions (Tables) | 6 Months Ended
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Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Summary of Property and Equipment | The following table summarizes property and equipment, and the related accumulated depreciation and amortization, at March 31, 2019 and September 30, 2018:
| March 31, 2019 |  | September 30, 2018
| (In thousands)
Property and equipment | $ | 163,687 |  |  | $ | 156,154 |
Less: accumulated depreciation and amortization | (118,927 | ) |  | (107,317 | )
| $ | 44,760 |  |  | $ | 48,837 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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