Defined Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2012

Defined Benefit Plans [Abstract]

Net Periodic Cost (Benefit)

	Three Months Ended March 31,
	2012			2011
Expected return on plan assets, net of expenses	$	(2,603	)	$	(2,859	)
Interest cost on projected benefit obligation		1,950			1,973
Net amortization and deferral		1,229			783
Net periodic cost (benefit)	$	576		$	(103	)