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Income Taxes (Details Textual) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Taxes (Textual)      
Accrued interest on income taxes $ 10,000 $ 9,000 $ 9,000
U.S. federal [Member]      
Income Taxes (Textual)      
Net operating loss carryforwards $ 26,100,000    
Operating loss carry forwards expiration period The federal net operating loss carry-forwards will start to expire in 2032, with the year ended December 31, 2015's loss expiring in 2036.    
Income tax reuturns period U.S. federal tax returns for 2012 to 2015.    
Foreign [Member]      
Income Taxes (Textual)      
Net operating loss carryforwards $ 52,000,000    
Operating loss carry forwards amount no expiration $ 47,400,000    
Income tax reuturns period Foreign tax returns generally for 2011 to 2015.    
State [Member]      
Income Taxes (Textual)      
Net operating loss carryforwards $ 67,200,000    
Operating loss carry forwards expiration period The state net operating loss carry-forwards will start to expire in 2028, with the year ended December 31, 2015's loss expiring in 2036.    
Income tax reuturns period State and local tax returns generally for 2011 to 2015.