Significant Transactions (Details Textual) $ in Thousands, Number in Millions		1 Months Ended						2 Months Ended	3 Months Ended		12 Months Ended
	Dec. 31, 2022 USD ($) a ApartmentHome Land	Dec. 31, 2022 USD ($) a ApartmentHome Land	Jun. 30, 2022 USD ($)	May 31, 2022 USD ($) Home	Mar. 31, 2022 USD ($) Number	Feb. 28, 2022 USD ($) ft² Land Unit	Jan. 31, 2022 USD ($) Land	Aug. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) a ApartmentHome Land	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) a ApartmentHome Land	Dec. 31, 2021 USD ($)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Area of real estate property | a	15	15							15		15
Number of units in real estate property | ApartmentHome	5,582	5,582							5,582		5,582
Loan paid from disposition proceeds											$ 138,404
Number of land parcels subject to disposition | Land	1	1							1		1
Additional payment for passive equity investment											$ 14,227	$ 23,273
Commitment purchase amount											50,000
Financing right-of-use lease assets	$ 110,269	$ 110,269							$ 110,269		110,269	429,768
Finance lease, liability	114,625	114,625							114,625		114,625	435,093
98 Year Ground Lease [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Financing right-of-use lease assets	15,000	15,000							15,000		15,000
Finance lease, liability	15,200	$ 15,200							$ 15,200		$ 15,200
Pathfinder Village Property [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from sale of property				$ 127,000
Gain (loss) on sale of property held for sale				$ 94,600
Cedar Rim and 2900 on First Properties [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from sale of property								$ 122,000
Gain (loss) on sale of property held for sale								$ 75,600
Edgewater Joint Venture [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Commitment purchase amount					$ 8,000
Strathmore Joint Ventures [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Commitment purchase amount	35,600
Remaining unfunded commitments	$ 21,200
Percentage of share in joint venture				50.00%
Number of residential units | Home				574
Fort Lauderdale Consolidated Joint Venture [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of acre development site | Land						9
Number of land parcels acquired | Land							3
Percentage ownership in joint venture	51.00%	51.00%					51.00%		51.00%		51.00%
Purchase price										$ 100,000
Additional capitalized costs										$ 5,900
Proceeds from sale of property		$ 18,300
Gain (loss) on sale of property held for sale		5,900
Fort Lauderdale Consolidated Joint Venture [Member] | Residential Units [Member] | Flagler Village [Member] | Maximum [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of units in real estate property | Unit						1,500
Fort Lauderdale Consolidated Joint Venture [Member] | Mixed-Use Property [Member] | Flagler Village [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Area of real estate property | ft²						3,000,000
IQHQ [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Additional payment for passive equity investment											$ 14,200
Equity method investment cost basis			$ 39,200
Equity method investments fair value			$ 59,700
Unrealized gain on investment											20,500
IQHQ [Member] | Class A-1 Units [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Percentage ownership in joint venture			22.00%
Equity method investment redemption with step-up value to be paid in cash			$ 16,500
Gain from redemption of equity investment			5,700
Equity method investment cost basis			$ 10,800
Undeveloped Land Parcels Acquisition [Member] | Fort Lauderdale Consolidated Joint Venture [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loan paid from disposition proceeds									$ 22,900
Asset acquisition, price of acquisition, expected							$ 49,000
Land purchase							40,000
Undeveloped Land Parcels Acquisition [Member] | Fort Lauderdale Consolidated Joint Venture [Member] | Flagler Village [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Asset acquisition, price of acquisition, expected						$ 100,000
Undeveloped Land Parcels Acquisition [Member] | Anschutz Medical Campus [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Additional capitalized costs	$ 200	200							200		200
Asset acquisition, price of acquisition, expected		1,800
Aimco OP L.P. [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loan paid from disposition proceeds											138,404
Additional payment for passive equity investment											14,227	23,273
Financing right-of-use lease assets	110,269	110,269							110,269		110,269	429,768
Finance lease, liability	$ 114,625	$ 114,625							114,625		$ 114,625	$ 435,093
Aimco OP L.P. [Member] | Edgewater Joint Venture [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Total contribution							1,700
Number of square feet of mixed-use development | Number					1
Percentage of share in joint venture					20.00%
Cash contribution					$ 300
Aimco OP L.P. [Member] | Undeveloped Land Parcels Acquisition [Member] | Fort Lauderdale Consolidated Joint Venture [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loan paid from disposition proceeds									$ 11,700
Asset acquisition, price of acquisition, expected							25,000
Land purchase							$ 20,400