Partners' Capital - Reconciliation of Preferred OP Units (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Temporary Equity [Line Items]
Balance at January 1	$ 97,064
Balance at December 31	79,449
AIMCO PROPERTIES, L.P. [Member]
Temporary Equity [Line Items]
Balance at January 1	97,064
Preferred distributions	(7,019)
Redemption of preferred units and other	(17,615)
Net income	7,019
Balance at December 31	$ 79,449