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Concentrations and Credit Risk (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2018
Dec. 31, 2017
Concentration Risk, Percentage 10.00% 10.00%  
ConcentrationRiskPercentageOfAccountsReceivable 10.00% 10.00%  
Trade accounts and bills payable $ 61,184,722 $ 61,184,722 $ 65,616,543
Zhengzhou BAK Battery Co., Ltd [Member]      
Trade accounts and bills payable $ 2,295,131 $ 2,295,131 $ 0