Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

	Year Ended December 31,
(dollars in thousands)	2017			2016			2015
Numerator:
Net income attributable to Acadia	$	61,470		$	72,776		$	65,708
Less: net income attributable to participating securities	(642		)	(793		)	(927		)
Income from continuing operations net of income attributable to participating securities	$	60,828		$	71,983		$	64,781
Denominator:
Weighted average shares for basic earnings per share	83,682,789			76,231,000			68,851,083
Effect of dilutive securities:
Employee unvested restricted shares	2,682			12,550			18,556
Denominator for diluted earnings per share	83,685,471			76,243,550			68,869,639
Basic and diluted earnings per Common Share from continuing operations attributable to Acadia	$	0.73		$	0.94		$	0.94
Anti-Dilutive Shares Excluded from Denominator:
Series A Preferred OP Units	188			188			188
Series A Preferred OP Units - Common share equivalent	25,067			25,067			25,067
Series C Preferred OP Units	136,593			141,593			—
Series C Preferred OP Units - Common share equivalent	479,978			410,207			—