Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
REVENUES
Rental and other property revenues	$ 39,804	$ 38,309
OPERATING EXPENSES
Property operating expenses	16,942	15,349
Depreciation and amortization	20,717	19,347
General and administrative expenses	6,311	1,762
Total operating expenses	43,970	36,458
Interest expense	(12,677)	(5,651)
Mezzanine investment income, net	7,467	6,747
Unrealized gains on interest rate options	25,347
Other expenses, net	363	(415)
Income before income tax benefit	16,334	2,532
Income tax benefit	5,100	2,023
Net income	21,434	4,555
Noncontrolling interests:
Net loss attributable to redeemable noncontrolling interest in consolidated real estate partnership	152	103
Net (income) loss attributable to noncontrolling interests in consolidated real estate partnerships	(291)	5
Net income attributable to common noncontrolling interests in Aimco Operating Partnership	(1,081)	(236)
Net income attributable to Aimco common stockholders	$ 20,214	$ 4,427
Net income attributable to Aimco per common share – basic	$ 0.14	$ 0.03
Net income attributable to Aimco per common share – diluted	$ 0.14	$ 0.03
Weighted average common shares/units outstanding - basic	148,914	148,549
Weighted average common shares/units outstanding - diluted	149,046	148,569
Aimco OP L.P. [Member]
REVENUES
Rental and other property revenues	$ 39,804	$ 38,309
OPERATING EXPENSES
Property operating expenses	16,942	15,349
Depreciation and amortization	20,717	19,347
General and administrative expenses	6,311	1,762
Total operating expenses	43,970	36,458
Interest expense	(12,677)	(5,651)
Mezzanine investment income, net	7,467	6,747
Unrealized gains on interest rate options	25,347
Other expenses, net	363	(415)
Income before income tax benefit	16,334	2,532
Income tax benefit	5,100	2,023
Net income	21,434	4,555
Noncontrolling interests:
Net loss attributable to redeemable noncontrolling interest in consolidated real estate partnership	152	103
Net (income) loss attributable to noncontrolling interests in consolidated real estate partnerships	(291)	5
Net income attributable to Aimco common stockholders	$ 21,295	$ 4,663
Net income attributable to Aimco per common share – basic	$ 0.14	$ 0.03
Net income attributable to Aimco per common share – diluted	$ 0.14	$ 0.03
Weighted average common shares/units outstanding - basic	156,882	156,480
Weighted average common shares/units outstanding - diluted	157,014	156,500