Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details Textual)

v3.7.0.1
Subsequent Events (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Jul. 25, 2017
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Jul. 05, 2017
Jun. 26, 2017
Mar. 15, 2015
Subsequent Event [Line Items]                
Interest Expense, Debt       $ 300,000        
NSC Notes [Member]                
Subsequent Event [Line Items]                
Debt Instrument, Face Amount             $ 3,000,000  
Fortress Note [Member]                
Subsequent Event [Line Items]                
Long-term Debt   $ 3,500,000   3,500,000        
Interest Expense, Debt   $ 16,000 $ 43,000 $ 74,000 $ 72,000      
Debt Instrument, Interest Rate, Stated Percentage               8.00%
Subsequent Event [Member] | NSC Notes [Member]                
Subsequent Event [Line Items]                
Debt Instrument, Face Amount           $ 3,000,000    
Interest Receivable           $ 2,000    
Subsequent Event [Member] | Fortress Note [Member]                
Subsequent Event [Line Items]                
Long-term Debt $ 3,500,000              
Interest Expense, Debt $ 100,000              
Debt Instrument, Interest Rate, Stated Percentage 2.00%