Domestic and Foreign Operations (Details) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
|
| Domestic and Foreign Operations (Textual) | ||
| Derived over net revenues percentage | 99.00% | 99.00% |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- References No definition available.
|