Annual report pursuant to Section 13 and 15(d)

Convertible Debenture, due to Majority Stockholder (Details)

v3.19.1
Convertible Debenture, due to Majority Stockholder (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Related Party Transaction [Line Items]      
Balance as of January 1, 2016   $ 0 $ 40,030
Conversion of convertible debenture to common shares $ (30,030)    
Pay-off of remaining principal balance $ 0 $ 0 41,321
Balance as of December 31, 2016     0
Two Thousand Sixteen March Two [Member]      
Related Party Transaction [Line Items]      
Conversion of convertible debenture to common shares [1]     (15,000)
Two Thousand Sixteen July One [Member]      
Related Party Transaction [Line Items]      
Conversion of convertible debenture to common shares [1]     $ (15,030)
[1] Total amount converted to common shares equals $30,030