Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Details Textual)

v3.10.0.1
Long-Term Debt (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Dec. 31, 2016
Jun. 30, 2018
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Success Fee Expenses $ 250        
Share Price $ 8.00        
Contingent Success Fee Liability   $ 41 $ 41    
Restricted Cash and Cash Equivalents   7,366 7,366    
Cash and Cash Equivalents, at Carrying Value $ 16,846 13,890 13,890 $ 10,701 $ 27,813
Accretion Expense     45 $ 48  
Long-term Debt   $ 6,079 $ 6,079    
Debt Instrument, Interest Rate During Period   9.97% 9.82%    
Loan Agreement [Member]          
Line of Credit Facility, Maximum Borrowing Capacity $ 7,000        
Debt Instrument, Description of Variable Rate Basis 30-day U.S. LIBOR plus 5.41%        
Debt Instrument, Maturity Date     Jan. 01, 2021    
Accretion Expense     $ 141    
Long-term Debt   $ 245 $ 245