Condensed Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Aimco Predecessor Equity	Total Aimco Equity	Noncontrolling Interests in Consolidated Real Estate Partnerships	Common Noncontrolling Interests in Aimco Operating Partnership
Balances at Dec. 31, 2019	$ 513,560				$ 513,264	$ 513,264	$ 108	$ 188
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Aimco Predecessor	4,427				4,427	4,427
Net income (loss) attributable to noncontrolling interests in consolidated partnerships	(5)						(5)
Net income attributable to common noncontrolling interests in Aimco Operating Partnership	236							236
Contributions from Aimco Predecessor, net	(6,194)				(6,194)	(6,194)
Net income attributable to Aimco common stockholders	4,427
Balances at Mar. 31, 2020	512,024				$ 511,497	511,497	103	424
Balances at Dec. 31, 2020	559,091	$ 1,490	$ 515,127	$ (16,839)		499,778	31,877	27,436
Balances (in shares) at Dec. 31, 2020		149,036
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redemption of Aimco Operating Partnership units	(36)							(36)
Issuance of common stock in connection with share-based compensation arrangements	1,071	$ 2	1,069			1,071
Issuance of common stock in connection with share-based compensation arrangements (in shares)		232
Share-based compensation expense	229		171			171		58
Distribution to noncontrolling interests in consolidated real estate partnerships	(287)						(287)
Net income (loss) attributable to noncontrolling interests in consolidated partnerships	291						291
Net income attributable to common noncontrolling interests in Aimco Operating Partnership	1,081							1,081
Net income attributable to Aimco common stockholders	20,214			20,214		20,214
Other, net	(302)	$ 1	(316)			(317)	3	12
Other, net (in shares)		(60)
Balances at Mar. 31, 2021	$ 581,352	$ 1,491	$ 516,051	$ 3,375		$ 520,917	$ 31,884	$ 28,551
Balances (in shares) at Mar. 31, 2021		149,208