Employee Benefit Plans (Tables) (Defined Benefit Pension)

9 Months Ended

Sep. 30, 2012

Defined Benefit Pension

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

For the three- and nine-month periods ended September 30, 2012 and 2011 the components of pension expense are as follows:

	Three Months Ended September 30						Nine months ended September 30
	2012			2011			2012			2011
Service cost	$	4,012		$	3,316		$	10,387		$	9,949
Interest cost	7,151			5,953			17,293			17,858
Expected return on assets	(8,637		)	(7,178		)	(20,770		)	(21,530		)
Amortization of prior service cost	53			53			158			158
Amortization of net actuarial loss	2,796			1,596			8,270			4,786
Total pension expense	$	5,375		$	3,740		$	15,338		$	11,221