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Note 9 - Product Warranty - Changes in Product Warranty Liability (Details) - USD ($)	12 Months Ended
	Nov. 30, 2019	Nov. 30, 2018
Balance, beginning	$ 96,786	$ 68,451
Settlements / adjustments	(279,992)	(233,316)
Warranties issued	386,391	261,651
Balance, ending	$ 203,185	$ 96,786

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

Name:	artw_StandardProductWarrantyAccrualDecreaseIncreaseForPaymentsAndAdjustments
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=68068213&loc=d3e12565-110249

+ Details

Name:	us-gaap_StandardProductWarrantyAccrual
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant