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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)
 6 Months Ended
Jul. 01, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule of Accumulated Other Comprehensive Loss
The components of accumulated other comprehensive loss consisted of the following:
(dollars in thousands)
July 1, 2017
 
December 31, 2016
 
July 2, 2016
Cumulative foreign currency translation adjustments
$
(23,537
)
 
$
(27,624
)
 
$
(23,752
)
Pension and post-retirement obligations (1)
(7,116
)
 
(7,116
)
 
(6,781
)
Total accumulated other comprehensive loss
$
(30,653
)
 
$
(34,740
)
 
$
(30,533
)