Significant Transactions (Details Textual) $ in Thousands, Number in Millions			1 Months Ended				3 Months Ended			6 Months Ended
	Jun. 02, 2022 USD ($)	May 31, 2022 USD ($) SquareFeet Home	Jul. 31, 2022 USD ($)	Jun. 30, 2022 USD ($) Land	May 31, 2022 USD ($) SquareFeet Home	Apr. 30, 2022 USD ($)	Jun. 30, 2022 USD ($) Land	Mar. 31, 2022 USD ($) ft² Land Unit Number	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) Land	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Jul. 31, 2021 Land
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of land parcels subject to disposition | Land				1			1			1			1
Assets held for sale				$ 52,566			$ 52,566			$ 52,566
Land				601,757			601,757			601,757		$ 534,285
Commitment purchase amount								$ 50,000
Repayment of secured property debt										283,826	$ 20,331
Repayment of notes payable										387,088
Prepayment premium					$ 7,400
Proceeds from swaption										13,660
Interest Rate Swaption [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Notional amount				$ 500,000			$ 500,000			500,000
Proceeds from swaption										13,700
Derivative gain on swaption										$ 8,000
Pathfinder Village Property [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain loss on sale of property held for sale						$ 94,600
Proceeds from sale of property						$ 127,000
Edgewater Joint Venture [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Commitment purchase amount								8,000
Starthmore Joint Venture [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of residential units | Home		574			574
Number of square feet of mixed-use retail and cultural space | SquareFeet		20,000			20,000
Percentage of share in joint venture				50.00%			50.00%			50.00%
Commitment purchase amount										$ 12,000
Starthmore Joint Venture [Member] | Maximum [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Commitment purchase amount		$ 18,000
IQHQ [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Unrealized gain on investment							$ 20,500
Commitment purchase amount								$ 14,200
Equity method investment cost basis				$ 39,200			39,200			39,200
Equity method investments fair value				59,700			59,700			59,700
Receivable				$ 16,500			$ 16,500			$ 16,500
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%			22.00%			22.00%
Equity method investment cost basis				$ 10,800			$ 10,800			$ 10,800
Equity method investment redemption with step-up value to be paid in cash				16,500			16,500			16,500
Gain from redemption of equity investment							5,700			5,700
Aimco OP L.P. [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Land				601,757			601,757			601,757		$ 534,285
Repayment of secured property debt										283,826	20,331
Repayment of notes payable										387,088
Proceeds from swaption										13,660
Aimco OP L.P. [Member] | Edgewater Joint Venture [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of square feet of mixed-use development | Number								1
Percentage of share in joint venture								20.00%
Total contribution								$ 1,700
Other Assets [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Assets held for sale				11,700			11,700			11,700
Accrued Liabilities [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Assets held for sale				8,000			8,000			8,000
AIR [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Repayment of notes payable				387,100			387,100
Interest expense related party							6,400		$ 6,900	$ 13,300	$ 13,900
Spread maintenance cost				$ 17,900			17,900
AIR [Member] | Subsequent Event [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Repayment of notes payable			$ 147,000
Spread maintenance cost			$ 5,000
Fort Lauderdale Consolidated Joint Venture
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of land parcels acquired | Land								3
Percentage Ownership in Joint Venture								51.00%
Number of acre development site | Land								9
Fees Capitalized							$ 2,800
Cash held in escrow in seller's name	$ 7,200
Letters of credit into escrow	28,800
Purchased a component of development site	$ 64,000
Fort Lauderdale Consolidated Joint Venture | 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
Fort Lauderdale Consolidated Joint Venture | 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 | Undeveloped Land Parcels Acquisition [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Asset acquisition, price of acquisition, expected								$ 49,000
Land purchase								40,000
Fort Lauderdale Consolidated Joint Venture | Undeveloped Land Parcels Acquisition [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
Fort Lauderdale Consolidated Joint Venture | Aimco OP L.P. [Member] | Undeveloped Land Parcels Acquisition [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Asset acquisition, price of acquisition, expected								25,000
Land purchase								$ 20,400