XML 99 R77.htm IDEA: XBRL DOCUMENT v3.8.0.1
Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Beginning of year $ (57,982)    
End of year (17,832) $ (57,982)  
Accumulated Translation Adjustment [Member]      
Beginning of year (57,965) (48,091) $ (15,823)
Net derivative instrument loss, net of tax
Translation adjustments 40,096 (9,874) (32,268)
End of year (17,869) (57,965) (48,091)
Accumulated Defined Benefit Plans Net Derivative Instruments [Member]      
Beginning of year (17)
Net derivative instrument loss, net of tax 54 (17)
Translation adjustments
End of year $ 37 $ (17)