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Revenue (Tables) | 3 Months Ended
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Dec. 31, 2018
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The following summarizes our revenue by geographic location of our customers:
| Three months ended December 31,
($ in thousands) | 2018 |  | 2017 (as adjusted)*
North America, primarily United States | $ | 46,335 |  |  | $ | 29,337 |
Europe, Middle East & Africa | 10,104 |  |  | 10,156 |
Asia | 5,080 |  |  | 4,528 |
Latin America | 794 |  |  | 934 |
Total revenue | $ | 62,313 |  |  | $ | 44,955 |
*Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” which we adopted on October 1, 2018. Net sales of services and solutions disaggregated by product group:
| Three months ended December 31,
($ in thousands) | 2018 |  | 2017 (as adjusted)*
IoT Products & Services Segment |  |  |
Hardware product | $ | 50,812 |  |  | $ | 38,454 |
Services | 2,482 |  |  | 2,426 |
Total IoT Products & Services Segment | 53,294 |  |  | 40,880 |
IoT Solutions Segment |  |  |
Solutions | 9,019 |  |  | 4,075 |
Total Revenue | $ | 62,313 |  |  | $ | 44,955 |
*Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” which we adopted on October 1, 2018.
Contract with Customer, Asset and Liability | Changes in unearned revenue were as follows:
|  | Three months ended December 31,
($ in thousands) |  | 2018
Unearned revenue, beginning of period* |  | $ | 3,933 |
Billings |  | 9,702 |
Revenue recognized |  | (5,326 | )
Unearned revenue, end of period |  | $ | 8,309 |
*Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” which we adopted on October 1, 2018.

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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