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, 2020		$ 3,234,919	$ 3,174,509	$ 60,410
Balance as of beginning of period (in shares) at Dec. 31, 2020			218,578	3,520
Increase (Decrease) in Partners' Capital [Roll Forward]
Share-based award transactions, net		3,337	$ 3,337
Share-based award transactions, net (in shares)			354
Redemption and cancellation of general partner OP Units		(3,248)	$ (3,248)
Redemption and cancellation of general partner units (in shares)			(119)
Redemption of limited partner OP Units and other		0	$ 255	$ (255)
Redemption of limited partner OP Units and other (in shares)			11	11
Distributions declared		(71,206)	$ (70,023)	$ (1,183)
Net income	$ 22,030	22,393	22,030	363
Other comprehensive income	2,792	2,792	2,748	44
Balance as of end of period at Mar. 31, 2021		3,188,987	$ 3,129,608	$ 59,379
Balance as of end of period (in shares) at Mar. 31, 2021			218,824	3,509
Balance as of beginning of period at Dec. 31, 2021		3,344,316	$ 3,257,874	$ 86,442
Balance as of beginning of period (in shares) at Dec. 31, 2021			228,880	4,142
Increase (Decrease) in Partners' Capital [Roll Forward]
Share-based award transactions, net		2,024	$ 2,024
Share-based award transactions, net (in shares)			154
Redemption and cancellation of general partner OP Units		(1,640)	$ (1,640)
Redemption and cancellation of general partner units (in shares)			(50)
Redemption of limited partner OP Units and other		0	$ 2,065	$ (2,065)
Redemption of limited partner OP Units and other (in shares)			92	92
Distributions declared		(75,816)	$ (74,443)	$ (1,373)
Net income	18,315	18,666	18,315	351
Other comprehensive income	$ 8,817	8,817	8,768	49
Balance as of end of period at Mar. 31, 2022		$ 3,296,367	$ 3,212,963	$ 83,404
Balance as of end of period (in shares) at Mar. 31, 2022			229,076	4,050