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Accrued Liabilities
12 Months Ended
Dec. 31, 2018
Accrued Liabilities, Current [Abstract]  
Accrued Liabilities
ACCRUED LIABILITIES
Accrued liabilities consist of the following at December 31:
 
2018
 
2017
Accrued wages, bonuses and commissions
$
40,100

 
$
43,688

Other accrued liabilities
26,380

 
20,987

 
$
66,480

 
$
64,675