Revenue (Details) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
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| Total revenues | $ 560,229 | $ 1,570,037 |
| Automotive [Member] | ||
| Total revenues | 404,854 | 1,568,500 |
| Other [Member] | ||
| Total revenues | 155,375 | 1,537 |
| Aviation [Member] | ||
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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