Condensed Consolidated Statements of Changes In Partners' Capital (Unaudited) - USD ($) $ in Thousands	Total	Healthcare Trust of America Holdings, LP (HTALP)	Healthcare Trust of America Holdings, LP (HTALP) General Partners’ Capital	Healthcare Trust of America Holdings, LP (HTALP) Limited Partners’ Capital
Balance as of beginning of period (in units) at Dec. 31, 2014			125,087,000	2,155,000
Balance as of beginning of period at Dec. 31, 2014		$ 1,476,421	$ 1,447,409	$ 29,012
Increase (Decrease) in Partners' Capital [Roll Forward]
Share-based award transactions, net (in units)			164,000
Share-based award transactions, net		1,914	$ 1,914
Redemption and cancellation of general partner units (in units)			(48,000)
Redemption and cancellation of general partner units		(1,292)	$ (1,292)
Distributions declared		(36,873)	(36,309)	(564)
Net income	$ 6,804	6,909	$ 6,804	$ 105
Balance as of end of period (in units) at Mar. 31, 2015			125,203,000	2,155,000
Balance as of end of period at Mar. 31, 2015		1,447,079	$ 1,418,526	$ 28,553
Balance as of beginning of period (in units) at Dec. 31, 2015			127,027,000	1,930,000
Balance as of beginning of period at Dec. 31, 2015		1,406,958	$ 1,379,694	$ 27,264
Increase (Decrease) in Partners' Capital [Roll Forward]
Issuance of general partner units (in units)			3,418,000
Issuance of general partner units		91,269	$ 91,269
Share-based award transactions, net (in units)			191,000
Share-based award transactions, net		1,803	$ 1,803
Redemption and cancellation of general partner units (in units)			(70,000)
Redemption and cancellation of general partner units		(1,901)	$ (1,901)
Redemption of limited partner units and other (in units)			96,000	(96,000)
Redemption of limited partner units and other		0	$ 2,198	$ (2,198)
Distributions declared		(39,083)	(38,540)	(543)
Net income	$ 9,860	10,005	$ 9,860	$ 145
Balance as of end of period (in units) at Mar. 31, 2016			130,662,000	1,834,000
Balance as of end of period at Mar. 31, 2016		$ 1,469,051	$ 1,444,383	$ 24,668