Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2012

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,
	2012			2011
	(in thousands)
Beginning balance, January 1,	$	104,791		$	96,934
Accrued claims		9,495			9,790
Present value discount		(347	)		(530	)
Paid claims		(6,976	)		(7,533	)
Ending balance	$	106,963		$	98,661
Current portion of accrued claims	$	45,068		$	40,807
Long-term portion of accrued claims		61,895			57,854
	$	106,963		$	98,661