Intangible Assets, Net - Additional Information (Detail) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Finite Lived Intangible Assets Accumulated Amortization Addition | $ 4,394,901 | $ 4,374,841 |
| Exclusivity [Member] | ||
| Finite Lived Intangible Assets Accumulated Amortization Addition | $ 106,000 | |
| X | ||||||||||
- Definition Finite lived intangible assets accumulated amortization addition. No definition available.
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| X | ||||||||||
- Details
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