Note 4 - Contract Receivables, Contract Assets and Contract Liabilities (Details Textual) - USD ($)		6 Months Ended
Nov. 30, 2020	May 31, 2022	May 31, 2021
Contract with Customer, Liability, Revenue Recognized During Period	$ 474,000	$ 559,000	$ 276,000

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due

No definition available.

Name:	artw_ContractWithCustomerLiabilityRevenueRecognizedDuringPeriod
Namespace Prefix:	artw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration