Annual report pursuant to Section 13 and 15(d)

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

v3.6.0.2
Shareholders' Equity and Capital Stock - o/s RSUs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 11, 2015
Aug. 17, 2015
Mar. 13, 2015
Dec. 12, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
RSUs                
Number of unvested units         1,273,990 860,095 379,435 691,610
Remaining life (years)         10 months 2 days      
Aggregate Intrinsic Value         $ 675      
December 12, 2014 [Member]                
RSUs                
Grant date       Mar. 13, 2015        
Number of unvested units       110,278        
Remaining life (years)       2 months 9 days        
Aggregate Intrinsic Value       $ 58        
March 13, 2015 [Member]                
RSUs                
Grant date     Aug. 17, 2015          
Number of unvested units     177,314          
Remaining life (years)     7 months 13 days          
Aggregate Intrinsic Value     $ 94          
August 17, 2015 [Member]                
RSUs                
Grant date   Dec. 11, 2015            
Number of unvested units   270,760            
Remaining life (years)   11 months 9 days            
Aggregate Intrinsic Value   $ 144            
Share-Based Compensation Arrangement By Share-Based Number Four Member                
RSUs                
Grant date Dec. 16, 2016              
Number of unvested units 715,638              
Remaining life (years) 1 year 11 months 12 days              
Aggregate Intrinsic Value $ 379