Retirement And Other Postretirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2013

Compensation And Retirement Disclosure [Abstract]

Net Periodic Benefit Cost For The Defined Benefit Plans

	Three Months Ended
	March 31,
	2013			2012
Service cost	$	18		$	17
Interest cost		1,427			1,541
Expected return on plan assets		(2,270	)		(1,934	)
Amortization:
Unrecognized net transition asset		(23	)		(23	)
Unrecognized prior service cost (credit)		2			2
Unrecognized loss		557			447
Net periodic pension benefit cost	$	(289	)	$	50

Net Periodic Postretirement Benefit Cost

	Three Months Ended
	March 31,
	2013		2012
Interest cost	$	8	$	12
Amortization of unrecognized loss		—		3
Net periodic postretirement benefit cost	$	8	$	15