SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION Schedule of Real Estate and Accumulated Depreciation (Details) (USD $)					12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 Core Portfolio [Member] Crescent Plaza [Member]	Dec. 31, 2013 Core Portfolio [Member] New Louden Center [Member]	Dec. 31, 2013 Core Portfolio [Member] Mark Plaza [Member]	Dec. 31, 2013 Core Portfolio [Member] Plaza 422 [Member]	Dec. 31, 2013 Core Portfolio [Member] Route 6 Mall [Member]	Dec. 31, 2013 Core Portfolio [Member] Bartow Avenue [Member]	Dec. 31, 2013 Core Portfolio [Member] Amboy Rd. Shopping Ctr. [Member]	Dec. 31, 2013 Core Portfolio [Member] Abington Towne Center [Member]	Dec. 31, 2013 Core Portfolio [Member] Bloomfield Town Square [Member]	Dec. 31, 2013 Core Portfolio [Member] Walnut Hill Plaza [Member]	Dec. 31, 2013 Core Portfolio [Member] Elmwood Park Plaza [Member]	Dec. 31, 2013 Core Portfolio [Member] Merrillville Plaza [Member]	Dec. 31, 2013 Core Portfolio [Member] Marketplace of Absecon [Member]	Dec. 31, 2013 Core Portfolio [Member] Clark Diversey [Member]	Dec. 31, 2013 Core Portfolio [Member] Chestnut Hill [Member]	Dec. 31, 2013 Core Portfolio [Member] Third Avenue [Member]	Dec. 31, 2013 Core Portfolio [Member] Hobson West Plaza [Member]	Dec. 31, 2013 Core Portfolio [Member] Village Commons Shopping Center [Member]	Dec. 31, 2013 Core Portfolio [Member] Town Line Plaza [Member]	Dec. 31, 2013 Core Portfolio [Member] Branch Shopping Center [Member]	Dec. 31, 2013 Core Portfolio [Member] The Methuen Shopping Center [Member]	Dec. 31, 2013 Core Portfolio [Member] The Gateway Shopping Center [Member]	Dec. 31, 2013 Core Portfolio [Member] River Street [Member]	Dec. 31, 2013 Core Portfolio [Member] Rhode Island Place Shopping Center [Member]	Dec. 31, 2013 Core Portfolio [Member] Mad River Station [Member]	Dec. 31, 2013 Core Portfolio [Member] Pacesetter Park Shopping Center [Member]	Dec. 31, 2013 Core Portfolio [Member] 239 Greenwich Avenue [Member]	Dec. 31, 2013 Core Portfolio [Member] West Shore Expressway [Member]	Dec. 31, 2013 Core Portfolio [Member] West 54th Street [Member]	Dec. 31, 2013 Core Portfolio [Member] Acadia 5-7 East 17th Street [Member]	Dec. 31, 2013 Core Portfolio [Member] West Diversey 651-671 W Diversey [Member]	Dec. 31, 2013 Core Portfolio [Member] Mercer Street 15 Mercer Street [Member]	Dec. 31, 2013 Core Portfolio [Member] 4401 White Plains [Member]	Dec. 31, 2013 Core Portfolio [Member] Chicago Street Retail Portfolio [Member]	Dec. 31, 2013 Core Portfolio [Member] 1520 North Milwaukee Avenue [Member]	Dec. 31, 2013 Core Portfolio [Member] Cambridge LLC [Member]	Dec. 31, 2013 Core Portfolio [Member] 930 Rush Street [Member]	Dec. 31, 2013 Core Portfolio [Member] 28 Jericho Turnpike [Member]	Dec. 31, 2013 Core Portfolio [Member] 181 Main Street [Member]	Dec. 31, 2013 Core Portfolio [Member] 83 Spring Street [Member]	Dec. 31, 2013 Core Portfolio [Member] 60 Orange Street [Member]	Dec. 31, 2013 Core Portfolio [Member] 171-53 and 181-03 Connecticut Avenue [Member]	Dec. 31, 2013 Core Portfolio [Member] 639 West Diversey [Member]	Dec. 31, 2013 Core Portfolio [Member] 664 North Michigan Avenue [Member]	Dec. 31, 2013 Core Portfolio [Member] 8-12 East Walton [Member]	Dec. 31, 2013 Core Portfolio [Member] 3200 - 3204 M Street [Member]	Dec. 31, 2013 Core Portfolio [Member] 868 Broadway [Member]	Dec. 31, 2013 Core Portfolio [Member] 313 - 315 Bowery [Member]	Dec. 31, 2013 Core Portfolio [Member] 120 West Broadway [Member]	Dec. 31, 2013 Core Portfolio [Member] Brandywine Town Center [Member]	Dec. 31, 2013 Core Portfolio [Member] Brandywine Market Square [Member]	Dec. 31, 2013 Core Portfolio [Member] Undeveloped Land [Member]	Dec. 31, 2013 Acadia Realty, LP [Member] Cortlandt Towne Center [Member]	Dec. 31, 2013 Fund I [Member] Kroger/Safeway Various [Member]	Dec. 31, 2013 Fund II [Member] Liberty Avenue [Member]	Dec. 31, 2013 Fund II [Member] 216th Street [Member]	Dec. 31, 2013 Fund II [Member] 161st Street [Member]	Dec. 31, 2013 Fund III [Member] Cortlandt Towne Center [Member]	Dec. 31, 2013 Fund III [Member] Heritage Shops [Member]	Dec. 31, 2013 Fund III [Member] 654 Broadway [Member]	Dec. 31, 2013 Fund III [Member] New Hyde Park Shopping Center [Member]	Dec. 31, 2013 Fund III [Member] 640 Broadway [Member]	Dec. 31, 2013 Fund III [Member] Lincoln Park Centre LLC [Member]	Dec. 31, 2013 Fund III [Member] 3104 M Street [Member]	Dec. 31, 2013 Fund III [Member] 3780 to 3858 Nortrand Avenue [Member]	Dec. 31, 2013 Fund IV [Member] 210 Bowery LLC [Member]	Dec. 31, 2013 Fund IV [Member] Paramus Plaza [Member]	Dec. 31, 2013 Fund IV [Member] 1151 Third Avenue [Member]	Dec. 31, 2013 Fund IV [Member] Lake Montclair [Member]	Dec. 31, 2013 Fund IV [Member] 938 West North Avenue [Member]	Dec. 31, 2013 Fund IV [Member] Acadia Strategic Opportunity Fund IV [Member]	Dec. 31, 2013 Fund IV [Member] Real Estate Under Development [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 1,039,617,000						$ 16,747,000	$ 13,369,000	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 22,910,000	$ 32,744,000	$ 25,837,000	$ 0	$ 4,192,000	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 19,746,000	$ 4,088,000	$ 17,086,000	$ 0	$ 11,530,000	$ 26,000,000	$ 0	$ 0	$ 0	$ 0	$ 0	$ 6,263,000	$ 15,984,000	$ 0	$ 7,036,000	$ 0	$ 16,164,000	$ 0	$ 0	$ 8,457,000	$ 0	$ 4,685,000	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 141,825,000	$ 24,375,000	$ 0	$ 50,000,000	$ 0	$ 9,090,000	$ 25,500,000	$ 29,500,000	$ 84,745,000	$ 20,871,000	$ 0	$ 6,294,000	$ 22,750,000	$ 23,000,000	$ 0	$ 12,567,000	$ 4,600,000	$ 0	$ 0	$ 0	$ 0	$ 68,750,000	$ 262,912,000
Initial Cost to Company of Land	378,117,000						1,147,000	505,000	0	190,000	1,664,000	1,691,000	0	799,000	3,207,000	3,122,000	3,248,000	4,288,000	2,573,000	10,061,000	8,289,000	11,108,000	1,793,000	3,229,000	878,000	3,156,000	956,000	1,273,000	3,510,000	7,458,000	2,350,000	1,475,000	1,817,000	3,380,000	16,699,000	3,048,000	8,576,000	1,887,000	1,581,000	18,521,000	2,110,000	4,894,000	4,933,000	6,220,000	1,908,000	1,754,000	3,609,000	11,690,000	4,429,000	17,320,000	5,625,000	2,950,000	3,375,000	0	0	21,993,000	4,308,000	250,000	0	0	0	7,261,000	16,679,000	7,293,000	13,131,000	9,040,000	3,016,000	12,503,000	5,090,000	750,000	5,058,000	1,875,000	4,703,000	5,400,000	4,813,000	5,000,000	0	45,658,000
Initial Cost to Company of Buildings and Improvements	950,875,000						7,425,000	4,161,000	4,268,000	3,004,000	0	5,803,000	11,909,000	3,197,000	13,774,000	12,488,000	12,992,000	17,152,000	10,294,000	2,773,000	5,691,000	8,038,000	7,172,000	12,917,000	3,510,000	12,545,000	3,826,000	5,091,000	2,886,000	15,968,000	9,404,000	5,899,000	15,846,000	13,554,000	18,704,000	7,281,000	17,256,000	2,483,000	5,054,000	55,627,000	1,306,000	11,349,000	14,587,000	24,416,000	12,158,000	9,200,000	10,790,000	10,135,000	6,102,000	69,280,000	16,875,000	8,850,000	10,125,000	5,516,000	37,000,000	87,988,000	17,239,000	0	0	4,215,000	12,627,000	0	28,410,000	61,395,000	15,409,000	3,654,000	7,733,000	19,960,000	25,353,000	2,251,000	14,585,000	5,625,000	14,148,000	12,600,000	14,438,000	15,000,000	0	2,564,000
Costs Capitalized Subsequent to Acquisition	490,061,000						1,390,000	12,927,000	(872,000)	2,309,000	12,171,000	627,000	2,330,000	2,216,000	20,828,000	441,000	15,715,000	4,993,000	4,897,000	246,000	4,234,000	4,380,000	1,833,000	4,048,000	7,508,000	8,665,000	594,000	12,253,000	0	9,000	1,049,000	2,199,000	549,000	(55,000)	677,000	77,000	8,000	7,000	0	1,335,000	0	0	0	0	0	0	0	463,000	279,000	0	2,000	0	0	0	0	16,019,000	957,000	0	0	0	1,192,000	19,198,000	18,219,000	5,688,000	382,000	956,000	3,991,000	3,219,000	125,000	95,000	510,000	38,000	0	0	9,000	0	0	289,131,000
Carrying Amount of Land	381,909,000						1,147,000	505,000	0	190,000	1,664,000	1,691,000	0	799,000	3,207,000	3,122,000	3,798,000	4,288,000	2,577,000	10,061,000	8,289,000	11,855,000	1,793,000	3,229,000	907,000	3,401,000	961,000	1,273,000	3,510,000	7,458,000	2,350,000	1,475,000	1,817,000	3,380,000	16,699,000	3,048,000	8,576,000	1,887,000	1,581,000	18,559,000	2,110,000	4,894,000	4,933,000	6,220,000	1,908,000	1,754,000	3,609,000	11,689,000	4,429,000	17,320,000	5,625,000	2,950,000	3,375,000	0	0	24,214,000	4,262,000	250,000	0	0	0	7,261,000	16,679,000	7,293,000	13,131,000	9,040,000	3,016,000	12,503,000	5,090,000	750,000	5,058,000	1,875,000	4,703,000	5,400,000	4,813,000	5,000,000	0	45,658,000
Carrying Amount of Buildings and Improvements	1,437,144,000						8,815,000	17,088,000	3,396,000	5,313,000	12,171,000	6,430,000	14,239,000	5,413,000	34,602,000	12,929,000	28,157,000	22,145,000	15,187,000	3,019,000	9,925,000	11,671,000	9,005,000	16,965,000	10,989,000	20,965,000	4,415,000	17,344,000	2,886,000	15,977,000	10,453,000	8,098,000	16,395,000	13,499,000	19,381,000	7,358,000	17,264,000	2,490,000	5,054,000	56,924,000	1,306,000	11,349,000	14,587,000	24,416,000	12,158,000	9,200,000	10,790,000	10,599,000	6,381,000	69,280,000	16,877,000	8,850,000	10,125,000	5,516,000	37,000,000	101,786,000	18,242,000	0	0	4,215,000	13,819,000	19,198,000	46,629,000	67,083,000	15,791,000	4,610,000	11,724,000	23,179,000	25,478,000	2,346,000	15,095,000	5,663,000	14,148,000	12,600,000	14,447,000	15,000,000	0	291,695,000
Total Carrying Amount	1,819,053,000	1,287,198,000	897,370,000	753,989,000			9,962,000	17,593,000	3,396,000	5,503,000	13,835,000	8,121,000	14,239,000	6,212,000	37,809,000	16,051,000	31,955,000	26,433,000	17,764,000	13,080,000	18,214,000	23,526,000	10,798,000	20,194,000	11,896,000	24,366,000	5,376,000	18,617,000	6,396,000	23,435,000	12,803,000	9,573,000	18,212,000	16,879,000	36,080,000	10,406,000	25,840,000	4,377,000	6,635,000	75,483,000	3,416,000	16,243,000	19,520,000	30,636,000	14,066,000	10,954,000	14,399,000	22,288,000	10,810,000	86,600,000	22,502,000	11,800,000	13,500,000	5,516,000	37,000,000	126,000,000	22,504,000	250,000	0	4,215,000	13,819,000	26,459,000	63,308,000	74,376,000	28,922,000	13,650,000	14,740,000	35,682,000	30,568,000	3,096,000	20,153,000	7,538,000	18,851,000	18,000,000	19,260,000	20,000,000	0	337,353,000
Accumulated Depreciation	229,538,000	169,718,000	147,626,000	134,530,000			6,629,000	12,687,000	2,725,000	4,647,000	7,161,000	2,109,000	3,558,000	2,934,000	13,625,000	6,188,000	14,426,000	8,482,000	6,064,000	657,000	1,652,000	1,545,000	3,978,000	7,237,000	8,479,000	6,150,000	1,940,000	6,932,000	157,000	684,000	4,252,000	3,384,000	6,125,000	2,587,000	3,180,000	1,135,000	1,115,000	155,000	295,000	2,225,000	82,000	551,000	638,000	1,014,000	334,000	345,000	372,000	307,000	158,000	1,443,000	211,000	111,000	0	0	0	25,911,000	5,412,000	0	0	4,022,000	2,229,000	3,537,000	7,777,000	14,777,000	1,469,000	205,000	541,000	1,023,000	1,123,000	80,000	334,000	140,000	118,000	53,000	60,000	62,000	0	0
Real Estate and Accumulated Depreciation, Life Used for Depreciation					30 years	40 years
Real Estate, Federal Income Tax Basis	$ 1,491,000,000