Quarterly report pursuant to Section 13 or 15(d)

Subsequent event (Details Textual)

v3.7.0.1
Subsequent event (Details Textual) - USD ($)
1 Months Ended 3 Months Ended
May 05, 2017
Jul. 27, 2017
Jun. 30, 2017
Subsequent Event [Line Items]      
Investment Income, Interest     $ 491,325
Yipeng Energy Technology Co. Ltd [Member]      
Subsequent Event [Line Items]      
Sale of Stock, Percentage of Ownership after Transaction 4.654% 4.654%  
Investment Income, Interest   $ 1,600,000