Quarterly report pursuant to Section 13 or 15(d)

Summary of significant accounting policies (Details Textual)

v3.19.3.a.u2
Summary of significant accounting policies (Details Textual)
$ in Thousands
 6 Months Ended 12 Months Ended
Dec. 31, 2019
USD ($)
Jun. 30, 2019
USD ($)
Summary of significant accounting policies (Textual)    
Right of use asset $ 608
Lease liability 700  
Accrued expenses associated with share-based compensation $ 300  
SeniorSubordinatedNotes1Member    
Summary of significant accounting policies (Textual)    
Maturity date May 31, 2023 May 31, 2023
Convertible senior secured notes, percentage 0.065 0.065