Income Taxes (Details) (Forecast [Member])	6 Months Ended
Nov. 30, 2011	Nov. 30, 2010
Forecast [Member]
Income Taxes [Line Items]
Effective income tax rate	32.90%	32.70%

Reflects the estimated annual effective tax rate for the period.

No definition available.

Name:	wor_PercentageOfEstimatedAnnualEffectiveIncomeTaxRate
Namespace Prefix:	wor_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration