Annual report pursuant to Section 13 and 15(d)

Fair Value Measurement (Details)

v3.19.1
Fair Value Measurement (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Conversion into common shares $ 0 $ (1,000)
Change in fair value of convertible notes warrants 0 (15)
Warrant [Member]    
Fair value, Beginning Balance 0 314
Change in fair value 0 451
Conversion into common shares   (750)
Change in fair value of convertible notes warrants   (15)
Fair value, Ending Balance 0 0
Warrant [Member] | NSC Contingently Issuable Warrants [Member]    
Fair value, Beginning Balance 0 302
Change in fair value 0 448
Conversion into common shares   (750)
Change in fair value of convertible notes warrants   0
Fair value, Ending Balance 0 0
Warrant [Member] | Westpark Contingently Issuable Warrants [Member]    
Fair value, Beginning Balance 0 12
Change in fair value 0 3
Conversion into common shares   0
Change in fair value of convertible notes warrants   (15)
Fair value, Ending Balance $ 0 $ 0