Represents debt service coverage ratio required by the debt agreement.

No definition available.

Name:	artw_DebtInstrumentCovenantDebtServiceCoverageRatio
Namespace Prefix:	artw_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the interest rate increase in event of default required by debt agreement.

+ References

No definition available.

+ Details

Name:	artw_DebtInstrumentCovenantInterestRateIncreaseInEventOfDefault
Namespace Prefix:	artw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The minimum EBIDTA of the company that is required at the reported date.

+ References

No definition available.

+ Details

Name:	artw_DebtInstrumentRequirementMinimumEBIDTA
Namespace Prefix:	artw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The minimum liquidity of the company that is required as of the end of each month.

+ References

No definition available.

+ Details

Name:	artw_DebtInstrumentRequirementMinimumLiquidity
Namespace Prefix:	artw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of credit facility borrowing capacity borrowing base maximum inventoryamount

+ References

No definition available.

+ Details

Name:	artw_LineOfCreditFacilityBorrowingCapacityBorrowingBaseMaximumInventoryAmount
Namespace Prefix:	artw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of credit facility borrowing capacity borrowing base minimum percentage of aggregatereceivables

+ References

No definition available.

+ Details

Name:	artw_LineOfCreditFacilityBorrowingCapacityBorrowingBaseMinimumPercentageOfAggregateReceivables
Namespace Prefix:	artw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of credit facility borrowing capacity borrowing base percentage of accountsreceivable

+ References

No definition available.

+ Details

Name:	artw_LineOfCreditFacilityBorrowingCapacityBorrowingBasePercentageOfAccountsReceivable
Namespace Prefix:	artw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of credit facility borrowing capacity borrowing base percentage ofinventory

+ References

No definition available.

+ Details

Name:	artw_LineOfCreditFacilityBorrowingCapacityBorrowingBasePercentageOfInventory
Namespace Prefix:	artw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.7-03(a)(16))
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-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

+ Details

Name:	us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=artw_TheLineOfCreditMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=artw_USBankMember
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Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
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Balance Type:
Period Type:

- Details

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Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_PrimeRateMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=artw_The2013TermNotesMember
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Balance Type:
Period Type:

- Details

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- Details

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- Details

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- Details

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Note 8 - Loan and Credit Agreements (Details Textual)				3 Months Ended	6 Months Ended		12 Months Ended
Note 8 - Loan and Credit Agreements (Details Textual)	May 31, 2017 USD ($)	Feb. 10, 2016 USD ($)	May 10, 2012 USD ($)	Feb. 28, 2017 USD ($)	May 31, 2017 USD ($)	May 31, 2016 USD ($)	Nov. 30, 2016 USD ($)	Aug. 31, 2017 USD ($)	Apr. 30, 2017 USD ($)	May 29, 2014 USD ($)	May 01, 2013 USD ($)	Feb. 01, 2013	May 01, 2010 USD ($)
Repayments of Long-term Debt					$ 364,080	$ 1,551,398
Long-term Debt	$ 3,481,885				3,481,885		$ 3,911,000
The Line of Credit [Member] \| Revolving Credit Facility [Member] \| US Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity											$ 4,500,000
Long-term Line of Credit	3,734,114				3,734,114
Line of Credit Facility, Remaining Borrowing Capacity	$ 657,766				$ 657,766
Line of Credit Facility Borrowing Capacity Borrowing Base Percentage of Accounts Receivable	75.00%				75.00%
Line of Credit Facility Borrowing Capacity Borrowing Base Minimum Percentage of Aggregate Receivables	20.00%				20.00%
Line of Credit Facility Borrowing Capacity Borrowing Base Percentage of Inventory	50.00%				50.00%
Line of Credit Facility Borrowing Capacity Borrowing Base Maximum Inventory Amount	$ 3,375,000				$ 3,375,000
The Line of Credit [Member] \| Revolving Credit Facility [Member] \| US Bank [Member] \| Minimum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage					0.25%
Debt Instrument, Interest Rate, Stated Percentage	5.00%				5.00%
US Bank UHC Loan [Member] \| US Bank [Member]
Debt Instrument, Face Amount			$ 880,000
Long-term Debt	$ 271,825				$ 271,825
US Bank UHC Loan [Member] \| US Bank [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate			1.50%
US Bank UHC Loan [Member] \| US Bank [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage			5.00%
The 2013 Term Notes [Member] \| US Bank [Member]
Repayments of Long-term Debt		$ 1,078,196
Debt Instrument, Periodic Payment				$ 46,672
Long-term Debt	$ 1,878,549				$ 1,878,549
The 2013 Term Notes [Member] \| US Bank [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	1.50%
The 2013 Term Notes [Member] \| US Bank [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	5.00%				5.00%
The 2014 Term Note [Member] \| US Bank [Member]
Debt Instrument, Face Amount										$ 1,000,000
Long-term Debt	$ 887,164				$ 887,164
The 2014 Term Note [Member] \| US Bank [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	1.50%
The 2014 Term Note [Member] \| US Bank [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	5.00%				5.00%
Line of Credit, 2013 Term Notes, and 2014 Term Notes [Member] \| US Bank [Member]
Debt Instrument, Requirement, Minimum EBIDTA	$ 1				$ 1
Debt Instrument, Requirement, Minimum Liquidity									$ 500,000
Line of Credit, 2013 Term Notes, and 2014 Term Notes [Member] \| US Bank [Member] \| Scenario, Forecast [Member]
Debt Instrument, Requirement, Minimum EBIDTA								$ 648,000
US Bank UHC Loan, Line of Credit, 2013 Term Notes, and 2014 Term Notes [Member] \| US Bank [Member]
Debt Instrument, Covenant Interest Rate Increase in Event of Default	5.00%				5.00%
Iowa Finance Authority Term Loan [Member]
Debt Instrument, Periodic Payment					$ 12,500		12,500
Long-term Debt	$ 444,347				$ 444,347		$ 512,935
Debt Instrument, Interest Rate, Stated Percentage	2.75%				2.75%		2.75%
Iowa Finance Authority Term Loan [Member] \| The First National Bank of West Union [Member]
Debt Instrument, Face Amount													$ 1,300,000
Debt Instrument, Interest Rate, Stated Percentage												2.75%	3.50%
Debt Instrument, Covenant Debt Service Coverage Ratio	1.5				1.5