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Revenue from Contracts with Customers (ASC 606) (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The following table summarizes net sales from contracts with customers for the years ended December 31, 2020 and 2019:
|  | Year Ended December 31,
|  | 2020 |  | 2019
Mobile connectivity product, transferred at point in time |  | $ | 25,140 |  |  | $ | 26,419 |
Mobile connectivity product, transferred over time (1) |  | 2,723 |  |  | 5,204 |
Mobile connectivity service |  | 91,590 |  |  | 90,392 |
Inertial navigation product |  | 36,756 |  |  | 30,302 |
Inertial navigation service |  | 2,524 |  |  | 5,576 |
Total net sales |  | $ | 158,733 |  |  | $ | 157,893 |
(1) Reflects the correction discussed above.

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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=121604090&loc=SL49130545-203045 + Details
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