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Segment Reporting (Details Textual) - Sales | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Product Sales Concentration Risk | Mobile Connectivity |  |
Segment Reporting Information [Line Items] |  |
Concentration Risk, Percentage | 20.00% |
Geographic Concentration Risk | Non-US |  |
Segment Reporting Information [Line Items] |  |
Concentration Risk, Percentage | 54.00% | 57.00%
Mini-VSAT Broadband Airtime Service | Service Sales Concentration Risk | Mobile Connectivity |  |
Segment Reporting Information [Line Items] |  |
Concentration Risk, Percentage | 48.00% | 46.00%
FOG-based Guidance and Navigation Systems | Product Sales Concentration Risk | Intertial Navigation |  |
Segment Reporting Information [Line Items] |  |
Concentration Risk, Percentage | 16.00% | 17.00%

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