EARNINGS PER COMMON SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Earnings Per Share, Basic and Diluted [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount									25,067	25,067	25,067
Numerator:
Income from continuing operations	$ 7,576	$ 8,893	$ 7,967	$ 9,590	$ 8,440	$ 6,242	$ 5,612	$ 3,325	$ 34,026	$ 23,619	$ 18,611
Less: net income attributable to participating securities									581	458	381
Income from continuing operations net of income									$ 33,445	$ 23,161	$ 18,230
Denominator:
Weighted average shares for basic earnings per share									54,919,000	45,854,000	40,697,000
Effect of dilutive securities:
Employee share options									38,000	40,000	18,000
Denominator for diluted earnings per share									54,957,000	45,894,000	40,715,000
Basic earnings per Common Share from continuing operations attributable to Common Shareholders	$ 0.14	$ 0.16	$ 0.14	$ 0.18	$ 0.17	$ 0.13	$ 0.12	$ 0.08	$ 0.61	$ 0.51	$ 0.45
Diluted earnings per Common Share from continuing operations attributable to Common Shareholders	$ 0.14	$ 0.16	$ 0.14	$ 0.18	$ 0.17	$ 0.13	$ 0.12	$ 0.08	$ 0.61	$ 0.51	$ 0.45
Series A Preferred Stock [Member] | Acadia Realty, LP [Member]
Schedule of Earnings Per Share, Basic and Diluted [Line Items]
Series A Preferred OP Units	188				188				188	188	188