Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details Textual)

v3.8.0.1
Summary of Significant Accounting Policies (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Summary Of Significant Account Policies [Line Items]      
Goodwill $ 1,659,000 $ 11,959,000 $ 21,166,000
Research and Development Expense, Total 121,000 859,000  
Advertising Expense 1,400,000 2,400,000  
Allowance for Doubtful Accounts Receivable 307,000 213,000  
Total Impairments, Goodwill 10,300,000 9,207,000  
Impairment of in process research and development $ 0 $ 0