Per Unit Data of HTALP (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		1 Months Ended	3 Months Ended				6 Months Ended
		Jun. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Numerator:
Net income			$ 16,598		$ 15,657		$ 30,299	$ 25,673
Net income attributable to noncontrolling interests	[1]		(339)		(311)		(600)	(525)
Net income attributable to common stockholders/unitholders			$ 16,259		$ 15,346		$ 29,699	$ 25,148
Denominator:
Weighted average shares/units outstanding - basic (in shares)			205,108		205,241		205,094	205,155
Adjusted weighted average number of shares/units outstanding — diluted (in shares)			209,005		209,259		209,002	209,218
Earnings per common unit - basic:
Net income attributable to common stockholders/unitholders (in dollars per share)			$ 0.08		$ 0.07		$ 0.14	$ 0.12
Earnings per common unit - diluted:
Net income attributable to common stockholders/unitholders (in dollars per share)			$ 0.08		$ 0.07		$ 0.14	$ 0.12
HTA, Inc.
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Forward equity agreement, shares to be sold		1,800
Numerator:
Net income			$ 16,598		$ 15,657		$ 30,299	$ 25,673
Net income attributable to noncontrolling interests			(339)		(311)		(600)	(525)
Net income attributable to common stockholders/unitholders			$ 16,259		$ 15,346		$ 29,699	$ 25,148
Denominator:
Weighted average shares/units outstanding - basic (in shares)			205,108		205,241		205,094	205,155
Adjusted weighted average number of shares/units outstanding — diluted (in shares)			209,005		209,259		209,002	209,218
Earnings per common unit - basic:
Net income attributable to common stockholders/unitholders (in dollars per share)			$ 0.08		$ 0.07		$ 0.14	$ 0.12
Earnings per common unit - diluted:
Net income attributable to common stockholders/unitholders (in dollars per share)			$ 0.08		$ 0.07		$ 0.14	$ 0.12
Healthcare Trust of America Holdings, LP (HTALP)
Numerator:
Net income			$ 16,598		$ 15,657		$ 30,299	$ 25,673
Net income attributable to noncontrolling interests			(38)		(14)		(66)	(47)
Net income attributable to common stockholders/unitholders			$ 16,560	$ 13,673	$ 15,643	$ 9,983	$ 30,233	$ 25,626
Denominator:
Weighted average shares/units outstanding - basic (in shares)			209,005		209,259		209,002	209,218
Dilutive units - partnership units convertible into common units (in shares)			0		0		0	0
Adjusted weighted average number of shares/units outstanding — diluted (in shares)			209,005		209,259		209,002	209,218
Earnings per common unit - basic:
Net income attributable to common stockholders/unitholders (in dollars per share)			$ 0.08		$ 0.07		$ 0.14	$ 0.12
Earnings per common unit - diluted:
Net income attributable to common stockholders/unitholders (in dollars per share)			$ 0.08		$ 0.07		$ 0.14	$ 0.12

[1] Includes amounts attributable to redeemable noncontrolling interests.