CONDENSED CONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL (Unaudited) - USD ($) $ in Thousands	Total	Aimco OP L.P. [Member]	General Partner and Special Limited Partner [Member] Aimco OP L.P. [Member]	Limited Partners [Member] Aimco OP L.P. [Member]	Partners Capital Attributable To The Partnership [Member] Aimco OP L.P. [Member]	Noncontrolling Interests in Consolidated Real Estate Partnerships [Member] Aimco OP L.P. [Member]
Balances at Dec. 31, 2024		$ 169,366	$ 122,957	$ 6,849	$ 129,806	$ 39,560
Net income (loss)	$ (34,517)	(34,517)	(33,221)	(1,824)	(35,045)	528
Share-based compensation expense		2,959	2,957	2	2,959
Contributions from noncontrolling interests in consolidated real estate partnerships	351	351				351
Distributions to noncontrolling interests in consolidated real estate partnerships	(774)	(774)				(774)
Redemption of OP Units held by third parties and reallocation of limited partners' interests in Aimco Operating Partnership		(176)	(224)	48	(176)
Purchase of redeemable noncontrolling interests in consolidated real estate partnerships	323	323	323		323
Redemption of OP Units held by Aimco		(256)	(256)		(256)
Other OP Unit issuances		(853)	(853)		(853)
Other, net		(81)	(33)	(48)	(81)
Balances at Jun. 30, 2025		136,342	91,650	5,027	96,677	39,665
Balances at Mar. 31, 2025		156,163	110,486	6,077	116,563	39,600
Net income (loss)	(20,132)	(20,132)	(19,305)	(1,059)	(20,364)	232
Share-based compensation expense		1,622	1,622		1,622
Contributions from noncontrolling interests in consolidated real estate partnerships	177	177				177
Distributions to noncontrolling interests in consolidated real estate partnerships	(344)	(344)				(344)
Redemption of OP Units held by third parties and reallocation of limited partners' interests in Aimco Operating Partnership		(70)	(79)	9	(70)
Purchase of redeemable noncontrolling interests in consolidated real estate partnerships	323	323	323		323
Other OP Unit issuances		(1,405)	(1,405)		(1,405)
Other, net		8	8		8
Balances at Jun. 30, 2025		136,342	91,650	5,027	96,677	39,665
Balances at Dec. 31, 2025		394,593	361,853	12,740	374,593	20,000
Net income (loss)	(7,918)	(7,918)	(7,743)	(271)	(8,014)	96
Share-based compensation expense		596	596		596
Distributions to noncontrolling interests in consolidated real estate partnerships	$ (96)	(96)				(96)
Other OP Unit issuances		1,660	1,660		1,660
Other, net		(21)	(12)	(9)	(21)
Balances at Jan. 31, 2026		$ 388,814	$ 356,354	$ 12,460	$ 368,814	$ 20,000

Net income (loss) excluding redeemable noncontrolling interests.

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Redemptions Of Aimco Operating Partnership Units Amount

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Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.

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Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

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Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders.

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Total change in each class of partners' capital accounts during the year due to redemptions and adjustments to redemption value. All partners include general, limited and preferred partners.

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Amount of increase (decrease) in partners' capital account for unit-based payment arrangement issued by partnership. Partner includes, but is not limited to, general, limited and preferred partners.

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Amount of partners' capital (deficit), including portions attributable to both the parent and noncontrolling interests. Excludes temporary equity and is sometimes called permanent equity.

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Value of shares of stock issued attributable to transactions classified as other.

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