Per Share Data of HTA (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Numerator:
Net income		$ 13,701	$ 10,016
Net income attributable to noncontrolling interests	[1]	(261)	(214)
Net income attributable to common stockholders/unitholders		$ 13,440	$ 9,802
Denominator:
Weighted average shares/units outstanding - basic (in shares)		205,080	205,069
Adjusted weighted average number of shares/units outstanding — diluted (in shares)		208,999	209,177
Earnings per common share - basic
Net income attributable to common stockholders/unitholders (in dollars per share)		$ 0.07	$ 0.05
Earnings per common share - diluted
Net income attributable to common stockholders/unitholders (in dollars per share)		$ 0.06	$ 0.05
HTA, Inc.
Numerator:
Net income		$ 13,701	$ 10,016
Net income attributable to noncontrolling interests		(261)	(214)
Net income attributable to common stockholders/unitholders		$ 13,440	$ 9,802
Denominator:
Weighted average shares/units outstanding - basic (in shares)		205,080	205,069
Dilutive shares - partnership units convertible into common stock (in shares)		3,919	4,108
Adjusted weighted average number of shares/units outstanding — diluted (in shares)		208,999	209,177
Earnings per common share - basic
Net income attributable to common stockholders/unitholders (in dollars per share)		$ 0.07	$ 0.05
Earnings per common share - diluted
Net income attributable to common stockholders/unitholders (in dollars per share)		$ 0.06	$ 0.05

[1] Includes amounts attributable to redeemable noncontrolling interests.