Number of builder deposits, shares.

No definition available.

Name:	AEI_NumberOfBuilderDepositsShares
Namespace Prefix:	AEI_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of increase in price of lots.

+ References

No definition available.

+ Details

Name:	AEI_PercentageOfIncreaseInPriceOfLots
Namespace Prefix:	AEI_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of parcels of land held for sale, and on which the entity has no intention or no further intention to perform construction activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_InventoryLandHeldForSale
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage of stated interest rate for receivables from retail land sales.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 976
-SubTopic 310
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6497875&loc=d3e22274-108663

+ Details

Name:	us-gaap_RetailLandSalesReceivablesStatedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents money paid in advance to protect the provider of a product or service, such as a lessor, against damage or nonpayment by the buyer or tenant (lessee) during the term of the agreement. Such damages may include physical damage to the property, theft of property, and other contractual breaches. Security deposits held may be interest or noninterest bearing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.15(a))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

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

- Details

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

- Details

Name:	us-gaap_TypeOfArrangementAxis=AEI_LotPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Builder Deposits (Details Narrative) - USD ($)	Mar. 31, 2021	Dec. 31, 2020	Apr. 28, 2020	Jan. 03, 2019
Number of builder deposits, shares	479
Builder lands sold	$ 64,000,000
Builder deposits	$ 928,565	$ 1,262,336
SeD Maryland Development, LLC [Member] \| Lot Purchase Agreements [Member]
Percentage of increase in price of lots	3.00%
Builder deposits	$ 5,600,000		$ 220,000	$ 100,000
Percentage of deposits purchase price under agreement	9.90%