Consolidated Statements Of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2013	Feb. 29, 2012
Net loss	$ (5,814)	$ (24,280)	$ (19,594)	$ (52,737)
Net actuarial gains (losses) of defined postretirement benefit plans
Reclassification of recognized transactions, net of taxes - $126, $209, $736 and $627, respectively	219	363	784	1,088
Adjustment, net of tax	0	0	(55)	0
Prior service cost of defined postretirement benefit plans
Reclassification of recognized transactions, net of taxes - ($71), ($71), ($413) and ($213), respectively	(123)	(123)	(168)	(369)
Total other comprehensive income	96	240	561	719
Comprehensive loss	$ (5,718)	$ (24,040)	$ (19,033)	$ (52,018)

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References+ Details

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Glossary Net Income

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-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

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-Name Accounting Research Bulletin (ARB)

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Reference 16: http://www.xbrl.org/2003/role/presentationRef

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+ Details

- Definition

Net of tax amount of the income statement impact of the reclassification adjustment for prior service costs recognized as a component of net period benefit cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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+ Details