Equity method investment interest rate.

No definition available.

Name:	airc_EquityMethodInvestmentInterestRate
Namespace Prefix:	airc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Equity method investment right to extend term.

+ References

No definition available.

+ Details

Name:	airc_EquityMethodInvestmentRightToExtendTerm
Namespace Prefix:	airc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Equity method investment term.

+ References

No definition available.

+ Details

Name:	airc_EquityMethodInvestmentTerm
Namespace Prefix:	airc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Option to acquire equity interest in partnership, percentage.

+ References

No definition available.

+ Details

Name:	airc_OptionToAcquireEquityInterestInPartnershipPercentage
Namespace Prefix:	airc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

+ 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 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8813-108599

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 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- 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

Name:	us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_InvestmentTypeAxis=airc_ParkmercedInvestmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Variable Interest Entities (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Sep. 08, 2020	Dec. 31, 2019
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Investment owned amount		$ 461,000
Option to acquire equity interest in partnership, percentage	30.00%
Other assets investment	$ 307,362		$ 280,258
Parkmerced Investment [Member]
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Investment owned amount	$ 275,000
Option to acquire equity interest in partnership, percentage	30.00%
Equity method investment, interest rate percentage	10.00%
Equity method investment, term	5 years
Equity method investment, right to extend term	5 years
Other assets investment	$ 307,400