CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($) shares in Thousands, $ 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 at Dec. 31, 2018		$ 3,334,914	$ 3,256,294	$ 78,620
Balance as of beginning of period (in shares) at Dec. 31, 2018			205,267	3,929
Increase (Decrease) in Partners' Capital [Roll Forward]
Share-based award transactions, net		3,389	$ 3,389
Share-based award transactions, net (in shares)			293
Redemption and cancellation of general partner OP Units		(11,926)	$ (11,926)
Redemption and cancellation of general partner units (in shares)			(478)
Redemption of limited partner OP Units and other		0	$ 527	$ (527)
Redemption of limited partner units and other (in shares)			18	(18)
Distributions declared		(64,884)	$ (63,578)	$ (1,306)
Net income	$ 13,440	13,673	13,440	233
Other comprehensive loss	(390)	(390)	(382)	(8)
Balance as of end of period at Mar. 31, 2019		3,274,776	$ 3,197,764	$ 77,012
Balance as of end of period (in shares) at Mar. 31, 2019			205,100	3,911
Balance as of beginning of period at Dec. 31, 2019		3,430,644	$ 3,358,279	$ 72,365
Balance as of beginning of period (in shares) at Dec. 31, 2019			216,453	3,834
Increase (Decrease) in Partners' Capital [Roll Forward]
Issuance of general partner OP Units		50,020	$ 50,020
Issuance of general partner OP Units (in shares)			1,675
Share-based award transactions, net		3,203	$ 3,203
Share-based award transactions, net (in shares)			236
Redemption and cancellation of general partner OP Units		(4,624)	$ (4,624)
Redemption and cancellation of general partner units (in shares)			(154)
Redemption of limited partner OP Units and other		0	$ 6,776	$ (6,776)
Redemption of limited partner units and other (in shares)			273	(273)
Distributions declared		(70,001)	$ (68,867)	$ (1,134)
Net income	17,901	18,208	17,901	307
Other comprehensive loss	$ (22,498)	(22,498)	(22,138)	(360)
Balance as of end of period at Mar. 31, 2020		$ 3,404,952	$ 3,340,550	$ 64,402
Balance as of end of period (in shares) at Mar. 31, 2020			218,483	3,561

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