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Note 9 - Product Warranty - Changes in Product Warranty Liability (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Aug. 31, 2021 | Aug. 31, 2020 | Aug. 31, 2021 | Aug. 31, 2020
Balance, beginning | $ 267,500 | $ 239,233 | $ 291,453 | $ 203,185
Settlements / adjustments | (75,204) | (37,146) | (177,470) | (65,722)
Warranties issued | 53,384 | 66,146 | 131,697 | 130,770
Balance, ending | $ 245,680 | $ 268,233 | $ 245,680 | $ 268,233

X
- Definition Amount of decrease (increase) in the standard product warranty accrual from payments and adjustments made in cash or in kind to satisfy claims under the terms of the standard product warranty. Excludes extended product warranties. + References No definition available. + Details
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Namespace Prefix: | artw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) in the standard product warranty accrual from warranties issued and cancelled. Excludes extended product warranties. + References No definition available. + Details
Name: | artw_StandardProductWarrantyAccrualIncreaseDecreaseForWarrantiesIssuedAndCancelled
Namespace Prefix: | artw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(1),(c)(5) -URI http://asc.fasb.org/extlink&oid=123368208&loc=d3e12565-110249 + Details
Name: | us-gaap_StandardProductWarrantyAccrual
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant