CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Rental income	$ 48,468	$ 35,186	$ 97,053	$ 73,776
Expense reimbursements	10,074	7,769	22,390	15,728
Other	962	963	2,060	2,459
Total revenues	59,504	43,918	121,503	91,963
Operating expenses
Depreciation and amortization	26,057	14,678	50,593	31,527
General and administrative	8,864	8,521	17,333	17,873
Real estate taxes	8,034	5,640	18,640	11,805
Property operating	9,364	5,105	17,561	10,642
Other operating	443	538	737	829
Total operating expenses	52,762	34,482	104,864	72,676
Operating income	6,742	9,436	16,639	19,287
Equity in earnings and gains of unconsolidated affiliates inclusive of gains on disposition of properties of $3,285, $0, $14,771 and $0, respectively	4,340	1,740	17,043	3,694
Interest income	8,203	7,415	17,187	12,053
Interest expense	(12,750)	(8,897)	(24,238)	(16,935)
Income from continuing operations before income taxes	6,535	9,694	26,631	18,099
Income tax provision	(427)	(111)	(552)	(34)
Income from continuing operations before gain on disposition of properties	6,108	9,583	26,079	18,065
Gain on disposition of properties, net of tax	0	16,572	0	81,965
Net income	6,108	26,155	26,079	100,030
Net loss (income) attributable to noncontrolling interests	5,952	(8,237)	1,612	(53,187)
Net income attributable to Acadia	$ 12,060	$ 17,918	$ 27,691	$ 46,843
Earnings Per Share, Basic and Diluted [Abstract]
Basic and diluted earnings per share (in dollars per share)	$ 0.14	$ 0.24	$ 0.33	$ 0.64