Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Details Textual)

v3.8.0.1
Long-Term Debt (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Dec. 31, 2016
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Success Fee Expenses $ 250      
Share Price $ 8.00 $ 1.58    
Contingent Success Fee Liability   $ 40    
Restricted Cash and Cash Equivalents   5,526    
Cash and Cash Equivalents, at Carrying Value $ 16,846 20,572 $ 9,426 $ 27,813
Accretion Expense   23 $ 24  
Long-term Debt   $ 6,623    
Debt Instrument, Interest Rate During Period   9.67%    
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   $ 120    
Long-term Debt   $ 245