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OTHER ACCRUED LIABILITIES
 12 Months Ended
Dec. 31, 2017
Other Liabilities Disclosure [Abstract]  
OTHER ACCRUED LIABILITIES
OTHER ACCRUED LIABILITIES
As of December 31, 2017 and 2016, other accrued liabilities were:
 
2017
 
2016
Accrued and deferred compensation
$
23,916

 
$
22,572

Accrued benefits and workers' compensation claims
6,640

 
6,460

Other
6,115

 
6,028

TOTAL OTHER ACCRUED LIABILITIES
$
36,671

 
$
35,060