Contingencies (Narrative) (Details) $ in Millions	May 31, 2023 USD ($)
Whatcom County Superi or Court [Member]
Loss Contingencies [Line Items]
Income Tax Examination, Estimate of Possible Loss	$ 27.1

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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