Represents the amount of yearly rent expense under the lessee's operating lease.

No definition available.

Name:	aey_LesseeOperatingLeaseYearlyRent
Namespace Prefix:	aey_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date.

+ References

No definition available.

+ Details

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

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from sale of buildings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585

+ Details

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

- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

+ Details

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

- Definition

The yearly payments due under the lease entered into in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84164451&loc=d3e36991-112694

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77913982&loc=d3e50796-112755

+ Details

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

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=aey_ChiefTechnologyOfficerDirectorAndSubstantialShareholderMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SaleLeasebackTransactionDescriptionAxis=aey_CableTVTenYearLeaseWithDavidChymiakLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=aey_SedaliaMissouriBuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=aey_TulsatMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 4 - Sale and Leaseback of Assets (Details Textual) - USD ($)			1 Months Ended	6 Months Ended
	Nov. 29, 2018	Sep. 28, 2018	Mar. 31, 2019	Mar. 31, 2019	Mar. 31, 2018
Proceeds from Sale of Property, Plant, and Equipment, Total					$ 23,900
Proceeds from Sale of Buildings				$ 6,350,000
Chief Technology Officer, Director, and Substantial Shareholder [Member]
Proceeds from Sale of Property, Plant, and Equipment, Total	$ 5,000,000
Deferred Gain on Sale of Property	$ 1,400,000
Chief Technology Officer, Director, and Substantial Shareholder [Member] \| Cable TV Ten Year Lease With David Chymiak LLC [Member]
Lessee, Operating Lease, Term of Contract			10 years	10 years
Sale Leaseback Transaction, Annual Rental Payments			$ 128,250
Chief Technology Officer, Director, and Substantial Shareholder [Member] \| Sedalia, Missouri Building [Member]
Deferred Gain on Sale of Property			600,000	$ 600,000
Proceeds from Sale of Buildings			$ 1,350,000
Chief Technology Officer, Director, and Substantial Shareholder [Member] \| Tulsat [Member]
Lessee, Operating Lease, Term of Contract		10 years
Lessee, Operating Lease, Yearly Rent		$ 528,000