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Revenue from Contracts with Customers (ASC 606) Disaggregation of Revenue (Tables) | 3 Months Ended
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Mar. 31, 2019
Disaggregation of Contract Revenue with a Customer [Abstract] |
Disaggregation of Revenue | The following table summarizes net sales from contracts with customers for the three months ended March 31, 2019 and 2018:
|  | Three Months Ended
|  | March 31,
|  | 2019 |  | 2018
Mobile connectivity product, transferred at point in time |  | $ | 5,677 |  |  | $ | 6,670 |
Mobile connectivity product, transferred over time |  | 1,385 |  |  | 1,250 |
Mobile connectivity service |  | 25,448 |  |  | 24,829 |
Inertial navigation product |  | 5,812 |  |  | 6,072 |
Inertial navigation service |  | 1,650 |  |  | 1,280 |
Total net sales |  | $ | 39,972 |  |  | $ | 40,101 |

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- Definition Disaggregation of Contract Revenue with a Customer [Abstract] + References No definition available. + Details
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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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