Annual report pursuant to Section 13 and 15(d)

Related Party (Details Textual)

v3.8.0.1
Related Party (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Related Party Transaction [Line Items]    
Related Party Transaction, Expenses from Transactions with Related Party $ 433,000 $ 491,000
Accounts Payable, Related Parties $ 123,000 $ 102,000