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OTHER ACCRUED LIABILITIES (Tables)
3 Months Ended
Mar. 31, 2019
Payables and Accruals [Abstract]  
Other Accrued Liabilities
The following table presents the major components of Other Accrued Liabilities (in thousands):
 
March 31,
2019
 
December 31,
2018
Warranty
$
23,012

 
$
22,247

Chassis converter pool agreements
22,869

 
22,273

Payroll and related taxes
21,831

 
16,096

Customer deposits
20,571

 
23,483

Self-insurance
11,194

 
9,890

Accrued interest
9,207

 
4,779

Operating lease obligations
3,640

 

Accrued taxes
2,789

 
7,653

All other
12,109

 
9,963

 
$
127,222

 
$
116,384

Changes in product warranty accrual
The following table presents the changes in the product warranty accrual included in Other Accrued Liabilities (in thousands):
 
2019
 
2018
Balance as of January 1
$
22,247

 
$
20,132

Provision for warranties issued in current year
1,948

 
1,524

Payments
(1,183
)
 
(1,353
)
Balance as of March 31
$
23,012

 
$
20,303