Annual report pursuant to Section 13 and 15(d)

Notes payable (Details Textual)

v3.7.0.1
Notes payable (Details Textual) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Short-term Debt [Line Items]    
Short-term Bank Loans and Notes Payable $ 30,658,000 $ 30,379,170
Other Short-term Borrowings $ 0 $ 110,996