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
Dec. 31, 2014
Summary of Significant Accounting Policies [Line Items]        
Depreciation, Depletion and Amortization, Total $ 245,000 $ 157,000 $ 72,000  
Cash and Cash Equivalents, at Carrying Value $ 17,116,000 $ 19,055,000 20,818,000 $ 17,525,000
Equity Method Investment, Ownership Percentage 88.50% 88.50%    
Noncontrolling Interest, Ownership Percentage by Parent 11.50% 11.50%    
Accrued Liabilities $ 700,000 $ 2,200,000    
Prepaid Expense 46,000 1,700,000    
Preferred Stock Dividends, Income Statement Impact $ 6,962,000 $ 0 $ 0  
Warrant [Member]        
Summary of Significant Accounting Policies [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 32,029,808 57,341,642 7,908,899  
Options [Member]        
Summary of Significant Accounting Policies [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 12,564,098 11,636,227 8,941,930  
Money Market Accounts [Member]        
Summary of Significant Accounting Policies [Line Items]        
Cash and Cash Equivalents, at Carrying Value $ 98,000 $ 1,700,000