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Accounting Policies (Tables)
 9 Months Ended
Sep. 30, 2017
Accounting Policies [Abstract]  
Activity and balances related to incurred but not paid workers' compensation claims
The following table provides the activity and balances related to incurred but not paid workers’ compensation claims:

 
 
Nine Months Ended 
 September 30,
 
 
2017
 
2016
 
 
(in thousands)
 
 
 
 
 
Beginning balance, January 1,
 
$
183,928

 
$
162,174

Accrued claims
 
52,133

 
46,967

Present value discount
 
(3,048
)
 
(1,785
)
Paid claims
 
(29,574
)
 
(29,537
)
Ending balance
 
$
203,439

 
$
177,819

 
 
 
 
 
Current portion of accrued claims
 
$
41,748

 
$
41,778

Long-term portion of accrued claims
 
161,691

 
136,041

 
 
$
203,439

 
$
177,819