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Income Tax (Details Textual) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2013
Income Tax (Textual) |  |  |
Effective income tax rate | 820.90% | (130.90%) |
Net operating losses | $ 14,320,000 |  |
Provisional tax expense | 8,312,749 | $ (838,988) |
Foreign pretax earnings | 830,000 | $ 1,210,000 |
Undistributed earnings | $ 99,370,000 |  |
Deferred tax asset valuation allowance | 100.00% |  |
Operating income loss carryforwards, period | 20 years |  |
Minimum [Member] |  |  |
Income Tax (Textual) |  |  |
Effective income tax rate | 21.00% |  |
Maximum [Member] |  |  |
Income Tax (Textual) |  |  |
Effective income tax rate | 35.00% |  |
Chinese subsidiaries [Member] |  |  |
Income Tax (Textual) |  |  |
Effective income tax rate | 25.00% |  |
Yinghua and Shanghai TCH [Member] |  |  |
Income Tax (Textual) |  |  |
Effective income tax rate | 25.00% | 25.00% |
Xi'an TCH [Member] |  |  |
Income Tax (Textual) |  |  |
Effective income tax rate | 25.00% |  | 15.00%
Huahong, Zhonghong and Erdos TCH [Member] |  |  |
Income Tax (Textual) |  |  |
Effective income tax rate | 25.00% | 25.00% |

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