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OTHER ACCRUED LIABILITIES
12 Months Ended
Dec. 31, 2019
Other Liabilities Disclosure [Abstract]  
OTHER ACCRUED LIABILITIES OTHER ACCRUED LIABILITIES
As of December 31, 2019 and 2018, other accrued liabilities were:
 
2019
 
2018
Accrued and deferred compensation
$
22,543

 
$
20,229

Accrued benefits and workers' compensation claims
6,241

 
5,896

Unearned revenue and customer deposit
2,024

 
1,915

Due to contracts and agencies
3,325

 
3,196

Current portion of operating lease
1,452

 

Other
2,988

 
2,270

Total other accrued liabilities
$
38,573

 
$
33,506