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Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2016
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:

 
 
Three Months Ended 
 March 31,
 
 
2016
 
2015
 
 
(in thousands)
 
 
 
 
 
Beginning balance, January 1,
 
$
162,184

 
$
136,088

Accrued claims
 
17,787

 
15,958

Present value discount
 
(639
)
 
(570
)
Paid claims
 
(8,719
)
 
(10,549
)
Ending balance
 
$
170,613

 
$
140,927

 
 
 
 
 
Current portion of accrued claims
 
$
40,282

 
$
45,152

Long-term portion of accrued claims
 
130,331

 
95,775

 
 
$
170,613

 
$
140,927