CWP and Workers Comp - Net Periodic Costs (Tables)

3 Months Ended

Mar. 31, 2013

CWP And Workers Comp Net Periodic Costs [Abstract]

Components of Net Periodic Benefit Costs

Components of net periodic costs (benefits) for the three months ended March 31 are as follows:

	CWP						Workers' Compensation
	Three Months Ended						Three Months Ended
	March 31,						March 31,
	2013			2012			2013			2012
Service cost	$	2,135		$	1,928		$	3,533		$	3,634
Interest cost	1,808			1,991			1,655			1,778
Amortization of actuarial gain	(4,213		)	(4,934		)	(699		)	(986		)
State administrative fees and insurance bond premiums	—			—			1,659			1,910
Legal and administrative costs	—			—			591			648
Net periodic (benefit) cost	$	(270	)	$	(1,015	)	$	6,739		$	6,984