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Goodwill and Other Identifiable Intangible Assets, Net (Additional Information) (Details) $ in Thousands | Jun. 30, 2016 USD ($) | Jun. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($)
--- | --- | --- | --- | ---
Goodwill [Line Items] |  |  |  |
Number of Reporting Units | 1 |  |  |
Goodwill | $ 109,880 | $ 131,069 | $ 109,448 | $ 100,183
M2M |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill |  | $ 98,600 |  |
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount |  | 7.00% |  |
Solutions |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill |  | $ 32,500 |  |
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount |  | 8.00% |  |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
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