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Earnings Per Common Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Numerator: |  |  |  |  |
Net (loss) income attributable to Acadia shareholders |  | $ (1,426) | $ (55,891) | $ 21,210 | $ (39,427)
Less: earnings attributable to unvested participating securities |  | (244) | (198) | (734) | 0
(Loss) income from continuing operations net of income attributable to participating securities for basic earnings per share |  | (1,670) | (56,089) | 20,476 | (39,427)
Impact of City Point Loan share conversion option | [1] | 0 | (1,804) | 0 | (1,804)
Income from continuing operations net of income attributable to participating securities for diluted earnings per share |  | $ (1,670) | $ (57,893) | $ 20,476 | $ (41,231)
Denominator: |  |  |  |  |
Weighted average shares for basic earnings per share |  | 95,319,958 | 94,980,333 | 95,256,703 | 94,757,678
Weighted average shares for diluted earnings per share |  | 95,319,958 | 95,250,968 | 95,256,703 | 94,848,881
Effect of dilutive securities: |  |  |  |  |
Series A Preferred OP Units |  | 0 | 0 | 0 | 0
Employee unvested restricted shares |  | 0 | 0 | 0 | 0
City Point Loan common stock conversion option | [1] | 0 | 270,635 | 0 | 91,203
Basic (loss) earnings per Common Share from continuing operations attributable to Acadia |  | $ (0.02) | $ (0.59) | $ 0.21 | $ (0.42)
Diluted (loss) earnings per Common Share from continuing operations attributable to Acadia |  | $ (0.02) | $ (0.61) | $ 0.21 | $ (0.43)
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) |  | 90,006 | 70,827 | 90,006 | 69,832
[1] | The impact of assumed conversion of dilutive convertible securities is related to the assumed conversion of potential common shares of the Company that could be subsequently issued in connection with the City Point Loan (Note 10) for the stub-period until the put rights were modified for a cash-only settlement option in the third quarter of 2022.

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