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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)
 12 Months Ended
Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Accumulated other comprehensive income (loss), net of tax, consisted of the following:
 
 
December 31,
 
 
2017
 
2016
Foreign currency translation adjustments
 
$
10,670

 
$
6,826

Pension plan obligations
 
39

 
105

Accumulated other comprehensive income (loss)
 
$
10,709

 
$
6,931