Earnings Per Common Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net income (loss) attributable to Acadia shareholders	$ 9,276	$ (374)	$ 22,636	$ 16,464
Less: earnings attributable to unvested participating securities	(247)	0	(490)	(408)
Income (loss) from continuing operations net of income attributable to participating securities for basic earnings per share	$ 9,029	$ (374)	$ 22,146	$ 16,056
Denominator:
Weighted average shares for basic earnings per share	95,259,924	94,944,772	95,224,901	94,119,752
Weighted average shares for diluted earnings per share	95,259,924	94,944,772	95,224,901	94,119,752
Basic earnings per Common Share from continuing operations attributable to Acadia	$ 0.09	$ 0.00	$ 0.23	$ 0.17
Diluted earnings per Common Share from continuing operations attributable to Acadia	$ 0.09	$ 0.00	$ 0.23	$ 0.17
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	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	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	126,384	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	438,831	439,556
Restricted shares
Anti-Dilutive Shares Excluded from Denominator:
Antidilutive securities excluded from computation of earnings per share (in shares)	96,143	69,948	96,143	69,948