Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity and Capital Stock - o/s RSUs (Details)

v3.10.0.1
Shareholders' Equity and Capital Stock - o/s RSUs (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2018
Dec. 31, 2017
RSUs    
Number of unvested units 1,083,004 1,175,952
Remaining life (years) 11 months 12 days  
Aggregate Intrinsic Value $ 736  
December 16, 2016    
RSUs    
Number of unvested units 584,096  
Remaining life (years) 5 months 16 days  
Aggregate Intrinsic Value $ 397  
December 15, 2017    
RSUs    
Number of unvested units 498,908  
Remaining life (years) 1 year 5 months 16 days  
Aggregate Intrinsic Value $ 339