Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2012

Retirement Plans

Schedule of the components of net periodic pension cost (benefit)

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Net periodic pension cost (benefit):
Interest cost	$	1,364		$	1,495		$	2,728		$	2,990
Expected return on plan assets	(1,549		)	(1,700		)	(3,098		)	(3,401		)
Amortization of net loss	431			197			862			395
Net periodic cost (benefit):	$	246		$	(8	)	$	492		$	(16	)
Contributions:
401(k) Plan	$	843		$	953		$	1,920		$	1,867
Defined contribution retirement plans	45			42			182			72
Defined benefit retirement plans	1,368			922			2,290			2,505
Total contributions	$	2,256		$	1,917		$	4,392		$	4,444