Earnings (Loss) Per Common Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net (loss) income attributable to Acadia		$ (35,445)	$ 23,548	$ (8,976)
Less: net income attributable to participating securities		(805)	(624)	(233)
(Loss) income from continuing operations net of income attributable to participating securities for basic (loss) earnings per share		(36,250)	22,924	(9,209)
Impact of City Point Loan share conversion option	[1]	(1,804)	0	0
(Loss) income from continuing operations net of income attributable to participating securities for diluted (loss) earnings per share		$ (38,054)	$ 22,924	$ (9,209)
Denominator:
Weighted average shares for basic earnings (loss) per share		94,575,251	87,653,818	86,441,922
Effect of dilutive securities:
Series A Preferred OP Units		0	0	0
Employee unvested restricted shares		0	0	0
City Point Loan common stock conversion option	[1]	68,215	0	0
Denominator for diluted earnings per share		94,643,466	87,653,818	86,441,922
Basic (loss) earnings per Common Share from continuing operations attributable to Acadia		$ (0.38)	$ 0.26	$ (0.11)
Diluted (loss) earnings per Common Share from continuing operations attributable to Acadia		$ (0.40)	$ 0.26	$ (0.11)
Series A Preferred OP Units
Anti-Dilutive Shares Excluded from Denominator:
Antidilutive securities excluded from computation of earnings per share (in shares)		188	188	188
Series A Preferred OP Units - Common Share Equivalent
Anti-Dilutive Shares Excluded from Denominator:
Antidilutive securities excluded from computation of earnings per share (in shares)		25,067	25,067	25,067
Series C Preferred OP Units
Anti-Dilutive Shares Excluded from Denominator:
Antidilutive securities excluded from computation of earnings per share (in shares)		126,384	126,593	126,593
Series C Preferred OP Units - Common Share Equivalent
Anti-Dilutive Shares Excluded from Denominator:
Antidilutive securities excluded from computation of earnings per share (in shares)		438,831	439,556	439,556
Restricted shares
Anti-Dilutive Shares Excluded from Denominator:
Antidilutive securities excluded from computation of earnings per share (in shares)		68,832	70,827	76,394

[1] The adjustment represents the impact of assumed conversion of dilutive convertible securities issued in connection with the City Point Loan in August 2022 that enabled the holder to convert its interest into the Company's common shares. The instrument was subsequently modified in the third quarter of 2022 to provide for a cash-only settlement option (Note 10)