Per Share Data of HTA (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	Jun. 30, 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 share - basic
Net income attributable to common stockholders/unitholders (in dollars per share)			$ 0.08	$ 0.07	$ 0.14	$ 0.12
Earnings per common share - diluted
Net income attributable to common stockholders/unitholders (in dollars per share)			$ 0.08	$ 0.07	$ 0.14	$ 0.12
HTA, Inc.
Earnings Per Share
Forward equity agreement, shares to be sold		1,800
Stock issued, share price (in dollars per share)		$ 28.31
Anticipated net proceeds from forward equity agreement		$ 52,100
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
Dilutive shares - partnership units convertible into common stock (in shares)			3,897	4,018	3,908	4,063
Adjusted weighted average number of shares/units outstanding — diluted (in shares)			209,005	209,259	209,002	209,218
Earnings per common share - basic
Net income attributable to common stockholders/unitholders (in dollars per share)			$ 0.08	$ 0.07	$ 0.14	$ 0.12
Earnings per common share - 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.