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DEBT (Tables)
 12 Months Ended
Dec. 31, 2017
Debt Disclosure [Abstract]  
Schedule of lines of credit
Lines of credit consisted of the following at December 31, 2017 and 2016:
 
 
2017
 
2016
Syndicated credit agreement:
 

 
 

U.S. Dollar revolving loan
$
18,250

 
$
16,250

Euro revolving loan
—

 
—

Commerzbank line of credit
—

 
—

 
18,250

 
16,250

Less current portion
—

 
—

 
 
 
 
Long-term lines of credit
18,250

 
16,250

Less: debt issuance costs
266

 
518

Lines of credit
$
17,984

 
$
15,732