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Self-Insurance Accruals
 12 Months Ended
Dec. 31, 2018
Self-Insurance Accruals [Abstract]  
Self-Insurance Accruals [Text Block]
Self-Insurance Accruals
Components of our self-insurance accruals for workers’ compensation, vehicle liability and general liability follow:
 
December 31,
 
2018
 
2017
Workers' compensation
$
41,577

 
$
40,764

Present value discount
3,099

 
2,346

 
38,478

 
38,418

Vehicle liability
13,342

 
5,536

General liability
31,965

 
23,740

Total
83,785

 
67,694

Less current portion
27,434

 
23,782

Noncurrent portion
$
56,351

 
$
43,912


The changes in our self-insurance accruals and the discount rate used for the workers’ compensation accrual are summarized in the table below.
 
December 31,
 
2018
 
2017
Balance, beginning of year
$
67,694

 
$
62,838

Provision for claims
51,685

 
34,884

Payment of claims
(35,594
)
 
(30,028
)
Balance, end of year
$
83,785

 
$
67,694

Workers' compensation discount rate
2.50
%
 
2.00
%
The increase in the provision for claims primarily relates to increases for certain vehicle and general liability claims that are anticipated to settle in the future at or near our retention levels.