The fixed charge coverage ratio is required by the debt instrument.

No definition available.

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Namespace Prefix:	awx_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed under the debt agreement for the first five years.

+ References

No definition available.

+ Details

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Namespace Prefix:	awx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The maturity schedule for the debt instrument.

+ References

No definition available.

+ Details

Name:	awx_DebtInstrumentMaturitySchedule
Namespace Prefix:	awx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of the required periodic payments including both interest and principal payments.

+ References

No definition available.

+ Details

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Namespace Prefix:	awx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The prepayment penalty expressed as a percentage of the principal of the loan being prepaid in the first five years.

+ References

No definition available.

+ Details

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Namespace Prefix:	awx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The prepayment penalty expressed as a percentage of the principal of the loan being prepaid in the tenth year.

+ References

No definition available.

+ Details

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Namespace Prefix:	awx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The prepayment penalty expressed as a percentage of the principal of the loan being prepaid in the eighth and ninth year.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The prepayment penalty expressed as a percentage of the principal of the loan being prepaid in the sixth and seventh year.

+ References

No definition available.

+ Details

Name:	awx_DebtInstrumentPrepaymentPenaltyPercentageYearsSixAndSeven
Namespace Prefix:	awx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

+ Details

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

- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

+ Details

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

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

+ Details

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

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

+ Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=awx_NewTermLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=awx_LaurelCapitalCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Note 16-Subsequent Event (Details Textual) $ in Thousands	Aug. 05, 2022 USD ($)	Dec. 20, 2019 USD ($)	Jun. 30, 2022 USD ($)
Long-term Debt, Gross			$ 20,256
New Term Loan Agreement [Member] \| Laurel Capital Corporation [Member]
Long-term Debt, Gross		$ 23,000
Payments of Debt Issuance Costs		300
Proceeds from Issuance of Debt		$ 7,200
Debt Instrument, Periodic Payment, Number of Payments		119
Debt Instrument, Maturity Schedule (Year)		15 years
Debt Instrument, Prepayment Penalty, Percentage, First Five Years		5.00%
Debt Instrument, Prepayment Penalty, Percentage, Years Six and Seven		4.00%
Debt Instrument, Prepayment Penalty, Percentage, Years Eight and Nine		3.00%
Debt Instrument, Prepayment Penalty, Percentage, Year Ten		2.00%
Debt Instrument, Covenant, Fixed Charge Coverage Ratio		1.20
New Term Loan Agreement [Member] \| Laurel Capital Corporation [Member] \| Subsequent Event [Member]
Long-term Debt, Gross	$ 31,000
Repayments of Debt	20,200
Payments of Debt Issuance Costs	400
Proceeds from Issuance of Debt	$ 10,400
Debt Instrument, Periodic Payment, Number of Payments	119
Debt Instrument, Maturity Schedule (Year)	25 years
Debt Instrument, Interest Rate, Stated Percentage, First Seven Years	6.00%
Debt Instrument, Prepayment Penalty, Percentage, First Five Years	6.00%
Debt Instrument, Prepayment Penalty, Percentage, Years Six and Seven	4.00%
Debt Instrument, Prepayment Penalty, Percentage, Years Eight and Nine	3.00%
Debt Instrument, Prepayment Penalty, Percentage, Year Ten	2.00%
Debt Instrument, Covenant, Fixed Charge Coverage Ratio	1.20