Retirement Plans (Tables)

12 Months Ended

May 31, 2013

Defined Benefit Plan Disclosure [Line Items]

Schedule Of Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax Table

The pretax changes in accumulated other comprehensive loss consist of the following:

	Pension Benefits						Other Benefits
In thousands	2013			2012			2013			2012
Net actuarial loss at beginning of year	$	28,968		$	18,828		$	5,066		$	5,613
Amortization of actuarial loss	(1,381		)	(1,722		)	(515		)	(566		)
Current period net actuarial loss (gain)	(6,467		)	11,862			(2,091		)	19
Net actuarial loss at the end of year	$	21,120		$	28,968		$	2,460		$	5,066
Net prior service credit at beginning of year	$	—		$	—		$	(3,545	)	$	(4,320	)
Amortization of prior service credit	—			—			775			775
Net prior service credit at the end of year	$	—		$	—		$	(2,770	)	$	(3,545	)

Schedule of Amounts Recognized in Other Comprehensive Income (Loss)

The pretax amounts in accumulated other comprehensive loss expected to be recognized as components of net periodic postretirement benefit cost (credit) in 2014 are as follows:

In thousands	Pension Benefits		Other Benefits
Net actuarial loss	$	615	$	229
Prior service credit	—		(775		)
	$	615	$	(546	)

Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets

Obligation and asset data for the defined benefit pension plan and postretirement health benefit plan at May 31 were as follows:

	Defined Pension Benefit						Health Benefit
In thousands	2013			2012			2013			2012
Change in projected benefit obligation
Benefit obligation at beginning of year	$	66,121		$	57,756		$	8,168		$	7,857
Service cost	339			537			106			98
Interest cost	2,613			3,040			352			415
Participant contributions	—			—			168			184
Curtailment	(2,228		)	—			—			—
Benefits paid	(3,511		)	(3,102		)	(410		)	(405		)
Actuarial loss (gain)	(945		)	7,890			(2,091		)	19
Benefit obligation at end of year	$	62,389		$	66,121		$	6,293		$	8,168
Change in plan assets
Fair value of plan assets at beginning of year	$	40,028		$	39,752		$	—		$	—
Actual return on plan assets	6,353			(864		)	—			—
Employer contributions	4,304			4,242			241			221
Benefits paid	(3,511		)	(3,102		)	(241		)	(221		)
Fair value of plan assets at end of year	$	47,174		$	40,028		$	—		$	—
Funded status at end of year	$	(15,215	)	$	(26,093	)	$	(6,293	)	$	(8,168	)
Weighted average assumptions used to determine benefit obligations
Assumed discount rate	4.50		%	4.35		%	4.55		%	4.35		%
Average long-term pay progression	—			3.00		%	—			—

Fair Value Of Plan Assets Table

The total estimated fair value of the plan assets at May 31 were as follows:

In thousands	2013		2012
Cash and cash equivalents	$	969	$	882
Mutual funds
Equity	28,713		23,782
Fixed income	17,492		15,364
Fair value of plan assets at end of year	$	47,174	$	40,028

Schedule of Allocation of Plan Assets

The actual defined benefit pension plan asset allocation at May 31, 2013 and 2012, and the target asset allocation for 2014, by asset category were as follows

% of Plan Assets	2013		2012		Target 2014
Equity securities	61	%	59	%	60	%
Fixed income securities	39	%	41	%	40	%
	100	%	100	%	100	%

Schedule of Changes in Projected Benefit Obligations

The following provides a reconciliation of the financial security plan benefit obligation.

In thousands	2013			2012
Change in projected benefit obligation
Benefit obligation at beginning of year	$	54,230		$	48,091
Service cost	2,370			2,147
Interest cost	2,364			2,517
Recognized actuarial loss (gain)	(38		)	4,366
Benefits paid	(3,323		)	(2,891		)
Benefit obligation at end of year	$	55,603		$	54,230
Funded status at end of year	$	(55,603	)	$	(54,230	)

Riverside Defined Benefit Plans

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

 The amount of the defined benefit pension plan and postretirement health benefit plan expense charged to costs and expenses was as follows:

	Defined Pension Benefit									Health Benefit
In thousands	2013			2012			2011			2013			2012			2011
Service cost	$	339		$	537		$	502		$	106		$	98		$	114
Interest cost	2,613			3,040			2,951			352			415			425
Expected return on plan assets	(3,059		)	(3,108		)	(2,740		)	—			—			—
Amortization of prior service credit	—			—			—			(775		)	(775		)	(775		)
Amortization of net actuarial loss	1,381			1,722			2,068			515			566			614
	$	1,274		$	2,191		$	2,781		$	198		$	304		$	378
Weighted average assumptions used to determine net cost
Assumed discount rate	3.90		%	5.35		%	5.60		%	4.35		%	5.35		%	5.60		%
Assumed long-term rate of return on pension plan assets	7.30		%	7.60		%	8.25		%	—			—			—
Average long-term pay progression	3.00		%	3.00		%	3.00		%	—			—			—

Financial Security Defined Benefit Plans

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

The amount of financial security plan benefit expense charged to costs and expenses was as follows:

In thousands	2013			2012		2011
Service cost	$	2,370		$	2,147	$	2,213
Interest cost	2,364			2,517		2,311
Recognized actuarial loss (gain)	(38		)	4,366		2,347
Recognized actuarial loss adjustment	—			—		—
	$	4,696		$	9,030	$	6,871