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Statutory Reserves (Details Textual)
 3 Months Ended
Mar. 31, 2018
Surplus Reserve Fund [Member]  
Statutory Reserves (Textual)  
Description of fund The Company's Chinese subsidiaries are required to transfer 10% of their net income, as determined under PRC accounting rules and regulations, to a statutory surplus reserve fund until such reserve balance reaches 50% of the Company's registered capital.
Total reserve percentage, description The remaining reserve balance after such issue is not less than 25% of the registered capital.
Common Welfare Fund [Member]  
Statutory Reserves (Textual)  
Description of fund The common welfare fund is a voluntary fund to which the Company can transfer 5% to 10% of its net income.