Pension Benefits (Tables)

6 Months Ended

Oct. 31, 2014

Pension and Other Postretirement Benefit Expense [Abstract]

Net Periodic Pension Cost

Net periodic pension (benefit) cost consisted of the following for the three months and six months ended October 31, 2014 and 2013: 

	Three Months Ended						Six Months Ended
	October 31,						October 31,
(in thousands)	2014			2013			2014			2013
Interest cost	$	1,617		$	1,551		$	3,233		$	3,101
Expected return on plan assets	(1,917		)	(1,778		)	(3,833		)	(3,556		)
Recognized net actuarial loss	216			282			433			565
Net periodic pension (benefit) cost	$	(84	)	$	55		$	(167	)	$	110