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Related Parties (Tables)
 12 Months Ended
Dec. 31, 2016
Related Party Transactions [Abstract]  
Schedule of Related Party Transactions
Total compensation for the Executive Officers, including social contributions, is summarized in the following table:
 
Year Ended December 31,
 
2014
 
2015
 
2016
 
 
 
 
 
 
 
(in thousands)
 
 
 
 
 
 
Short-term benefits (1)
$
(4,145
)

$
(3,067
)

$
(2,755
)
Long-term benefits (2)
(241
)

(245
)

(194
)
Shared-based compensation
(3,291
)

(4,594
)

(7,159
)
Total
$
(7,677
)
 
$
(7,906
)
 
$
(10,108
)
(1) wages, bonuses and other compensations
(2) pension defined benefit plan