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Accrued Liabilities
6 Months Ended
Jun. 30, 2018
Payables and Accruals [Abstract]  
Accrued Liabilities
Accrued Liabilities

Accrued liabilities are as follows:

 
June 30,
2018
 
December 31, 2017
 
(in thousands)
Warranty
$
11,458

 
$
10,483

Due to representatives
10,494

 
13,086

Payroll
3,943

 
4,456

Profit sharing
1,607

 
2,034

Worker's compensation
619

 
593

Medical self-insurance
980

 
725

Customer prepayments
2,907

 
2,838

Donations
846

 
588

Employee vacation time
3,008

 
2,688

Other
2,284

 
1,607

Total
$
38,146

 
$
39,098