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Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2016
Accounting Policies [Abstract]  
Schedule of Comprehensive Loss
The following table shows the components of accumulated other comprehensive loss, net of taxes as of December 31, 2016 and 2015:

 
2016
 
2015
Cumulative foreign currency translation
$
(118,071
)
 
$
(114,427
)
Cumulative supplemental benefit plans
(6,267
)
 
(3,540
)
Net unrecognized losses on interest rate swap
1,920

 
(2,699
)
Net unrealized gains on marketable securities
—

 
550

Accumulative other comprehensive loss
$
(122,418
)
 
$
(120,116
)