Pension and Postretirement Benefits (Tables)

3 Months Ended

Jun. 30, 2012

Pension and Other Postretirement Benefit Expense [Abstract]

Schedule of Net Periodic Benefit Cost Not yet Recognized

Net periodic pension cost for continuing operations consisted of the following:

	Three Months Ended June 30,
	2012			2011
Service cost	$	512		$	614
Interest expense	1,842			2,140
Expected return on plan assets	(1,569		)	(1,637		)
Amortization of prior service cost	55			27
Actuarial loss	498			306
Curtailment gain recognized	—			(4,989		)
Net periodic pension cost (benefit)	$	1,338		$	(3,539	)

Schedule of Net Periodic Benefit Cost, Post Employment Benefits

Net periodic benefit cost for postretirement health and life insurance benefit plans consisted of the following:

	Three Months Ended June 30,
	2012			2011
Service cost	$	16		$	18
Interest expense	157			167
Amortization of prior service cost	(411		)	(411		)
Actuarial loss	117			101
Net periodic pension (benefit)	$	(121	)	$	(125	)