Retirement Plans (Tables)

3 Months Ended

Aug. 31, 2013

Riverside Defined Benefit Plans

Net Benefit Costs

The amount of the defined benefit pension plan and postretirement health benefit plan expense charged to costs and expenses for the three-month periods ended August 31, 2013 and 2012, was as follows:

	Three months ended
	August 31,			August 31,
In thousands	2013			2012
Defined benefit pension plan
Service cost	$	—		$	155
Interest cost	683			708
Expected return on plan assets	(851		)	(748		)
Amortization of net actuarial loss	154			732
	$	(14	)	$	847
Postretirement health benefit plan
Service cost	$	25		$	27
Interest cost	72			88
Amortization of prior service cost	(194		)	(194		)
Amortization of net actuarial loss	55			129
	$	(42	)	$	50

Financial Security Defined Benefit Plans

Net Benefit Costs

The amount of financial security plan benefit expense charged to costs and expenses for the three-month periods ended August 31, 2013 and 2012, was as follows:

	Three months ended
	August 31,		August 31,
In thousands	2013		2012
Service cost	$	536	$	593
Interest cost	609		591
	$	1,145	$	1,184

The financial security defined benefit plans were amended during the second quarter of fiscal year 2013. This amendment provided that effective December 31, 2012 the Plans were frozen.