Debt Instrument, Credit Spread Adjustment

No definition available.

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- Definition

Line Of Credit Facility, Accordion Feature, Maximum Borrowing Capacity

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility, Duration Of Extension Option

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility, Extension Fee Percentage

+ References

No definition available.

+ Details

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- Definition

Line of Credit Facility, Interest Rate at Period End, After Effects Of Interest Rate Caps And Swaps

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Line Of Credit Facility, Number Of Extension Options

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- 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://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 2: 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

Reference 3: 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

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

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

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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
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Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from borrowings to finance the cost of construction.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

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Balance Type:	debit
Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Balance Type:
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- Details

Name:	us-gaap_DebtInstrumentAxis=ahh_MTTermLoanAgreementMember
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Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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Period Type:

- Details

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- Details

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- Details

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Indebtedness (Details) $ in Millions			3 Months Ended
Indebtedness (Details) $ in Millions	Dec. 06, 2022 USD ($)	Aug. 23, 2022 USD ($) extension_option	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Line of Credit \| Amended And Restated Credit Agreement
Indebtedness
Aggregate capacity under the credit facility		$ 550.0
Accordion feature maximum borrowing capacity		1,000.0
Line of Credit \| M&T Term Loan Agreement
Indebtedness
Aggregate capacity under the credit facility	$ 100.0
Accordion feature maximum borrowing capacity	$ 200.0
Line of Credit \| Revolving credit facility \| Amended And Restated Credit Agreement
Indebtedness
Aggregate capacity under the credit facility		$ 250.0
Number of extension options \| extension_option		2
Duration of extension option		6 months
Extension fee percentage		0.075%
Credit spread adjustment		0.10%
Line of credit, amount outstanding			$ 105.0	$ 61.0
Interest rate on credit facility as of end of period			6.20%
Interest rate on credit facility as of end of period after giving effect to interest rate caps and swaps			4.35%
Line of Credit \| Revolving credit facility \| M&T Term Loan Agreement
Indebtedness
Duration of extension option	1 year
Extension fee percentage	0.075%
Credit spread adjustment	0.10%
Line of credit, amount outstanding			$ 100.0	100.0
Interest rate on credit facility as of end of period			6.10%
Interest rate on credit facility as of end of period after giving effect to interest rate caps and swaps			4.80%
Line of Credit \| Revolving credit facility \| Secured Overnight Financing Rate (SOFR) \| M&T Term Loan Agreement
Indebtedness
Stated interest rate, basis spread on variable rate	1.00%
Line of Credit \| Revolving credit facility \| Federal Funds Rate \| M&T Term Loan Agreement
Indebtedness
Stated interest rate, basis spread on variable rate	0.50%
Line of Credit \| Term Loan Facility \| Amended And Restated Credit Agreement
Indebtedness
Aggregate capacity under the credit facility		$ 300.0
Credit spread adjustment		0.10%
Line of credit, amount outstanding			$ 300.0	$ 300.0
Interest rate on credit facility as of end of period			6.10%
Interest rate on credit facility as of end of period after giving effect to interest rate caps and swaps			3.68%
Line of Credit \| Minimum \| Revolving credit facility \| Amended And Restated Credit Agreement
Indebtedness
Basis points on unused commitment fee		0.15%
Line of Credit \| Minimum \| Revolving credit facility \| Secured Overnight Financing Rate (SOFR) \| Amended And Restated Credit Agreement
Indebtedness
Stated interest rate, basis spread on variable rate		1.30%
Line of Credit \| Minimum \| Term Loan Facility \| Secured Overnight Financing Rate (SOFR) \| Amended And Restated Credit Agreement
Indebtedness
Stated interest rate, basis spread on variable rate		1.25%
Line of Credit \| Maximum \| Revolving credit facility \| Amended And Restated Credit Agreement
Indebtedness
Basis points on unused commitment fee		0.25%
Line of Credit \| Maximum \| Revolving credit facility \| Secured Overnight Financing Rate (SOFR) \| Amended And Restated Credit Agreement
Indebtedness
Stated interest rate, basis spread on variable rate		1.85%
Line of Credit \| Maximum \| Term Loan Facility \| Secured Overnight Financing Rate (SOFR) \| Amended And Restated Credit Agreement
Indebtedness
Stated interest rate, basis spread on variable rate		1.80%
Construction loans
Indebtedness
Borrowings under construction loans			$ 2.7