Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details Textual)

v3.19.1
Subsequent Events (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 2 Months Ended 3 Months Ended
Apr. 30, 2019
May 31, 2019
Mar. 31, 2019
Mar. 31, 2018
Subsequent Event [Line Items]        
Proceeds from Warrant Exercises     $ 605 $ 0
Alliance Global Partners [Member]        
Subsequent Event [Line Items]        
Common Stock, Value Issuable $ 8,600      
Subsequent Event [Member]        
Subsequent Event [Line Items]        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 70,000      
Proceeds from Warrant Exercises $ 100      
Sale Of Common Stock, Shares   0    
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 1.50