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Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2015
Accounting Policies [Abstract]  
Activity and balances related to incurred but not paid workers' compensation claims
The following table presents the activity and balances related to incurred but not paid workers’ compensation claims:

 
 
Six Months Ended 
 June 30,
 
 
2015
 
2014
 
 
(in thousands)
 
 
 
 
 
Beginning balance, January 1,
 
$
136,088

 
$
120,833

Accrued claims
 
32,720

 
25,041

Present value discount
 
(1,189
)
 
(898
)
Paid claims
 
(19,794
)
 
(18,572
)
Ending balance
 
$
147,825

 
$
126,404

 
 
 
 
 
Current portion of accrued claims
 
$
48,887

 
$
53,441

Long-term portion of accrued claims
 
98,938

 
72,963

 
 
$
147,825

 
$
126,404