Derivative Instruments and Hedging Activities - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
Aug. 31, 2014	May 31, 2014
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Impact to fair value of derivative assets and liabilities as a result of recognition on a net basis	$ 333,000	$ 730,000
Losses in accumulated other comprehensive income expected to be reclassified into net earnings	(189,000)
Losses in accumulated other comprehensive income expected to be reclassified into net earnings, tax	$ 114,000

The estimated tax effect of the value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

No definition available.

Name:	wor_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferredTax
Namespace Prefix:	wor_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration