Income Taxes - Additional Information (Detail)	3 Months Ended
Aug. 31, 2017	Aug. 31, 2016
Income Taxes [Line Items]
Estimated annual effective income tax rate	30.50%	31.20%

The entity's estimated annual effective income tax rate.

No definition available.

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