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Accounting Policies (Tables)
 6 Months Ended
Jun. 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:

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

 
$
162,184

Accrued claims
 
34,242

 
35,045

Present value discount
 
(2,008
)
 
(1,274
)
Paid claims
 
(20,044
)
 
(19,038
)
Ending balance
 
$
196,118

 
$
176,917

 
 
 
 
 
Current portion of accrued claims
 
$
41,703

 
$
41,236

Long-term portion of accrued claims
 
154,415

 
135,681

 
 
$
196,118

 
$
176,917