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Revenue from Contracts with Customers (ASC 606) (Tables) | 6 Months Ended
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Jun. 30, 2019
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | Disaggregation of Revenue The following table summarizes net sales from contracts with customers for the three and six months ended June 30, 2019:
|  | Three Months Ended |  | Six Months Ended
|  | June 30 |  | June 30
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Mobile connectivity product, transferred at point in time |  | $ | 6,697 |  |  | $ | 6,731 |  |  | $ | 12,374 |  |  | $ | 13,401 |
Mobile connectivity product, transferred over time |  | 1,371 |  |  | 1,372 |  |  | 2,756 |  |  | 2,622 |
Mobile connectivity service |  | 22,906 |  |  | 20,901 |  |  | 44,417 |  |  | 41,034 |
Inertial navigation product |  | 6,626 |  |  | 8,059 |  |  | 12,438 |  |  | 14,131 |
Inertial navigation service |  | 1,635 |  |  | 1,569 |  |  | 3,285 |  |  | 2,849 |
Total net sales |  | $ | 39,235 |  |  | $ | 38,632 |  |  | $ | 75,270 |  |  | $ | 74,037 |

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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://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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