Per Share Data of HTA (Details) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2020 USD ($) Arrangement $ / shares shares	Mar. 31, 2019 USD ($) $ / shares shares
Earnings Per Share
Anti-dilutive securities excluded from calculation (in shares)		255
Numerator:
Net income | $		$ 18,208	$ 13,701
Net income attributable to noncontrolling interests | $	[1]	(307)	(261)
Net income attributable to common stockholders/unitholders | $		$ 17,901	$ 13,440
Denominator:
Weighted average shares/units outstanding - basic (in shares)		216,692	205,080
Dilutive shares - partnership units convertible into common stock (in shares)		3,676	3,919
Dilutive effect of forward equity sales agreement		255	0
Adjusted weighted average number of shares/units outstanding — diluted (in shares)		220,623	208,999
Earnings per common share - basic
Net income attributable to common stockholders/unitholders (in dollars per share) | $ / shares		$ 0.08	$ 0.07
Earnings per common share - diluted
Net income attributable to common stockholders/unitholders (in dollars per share) | $ / shares		$ 0.08	$ 0.06
Common Stock
Earnings Per Share
Issuance of common stock, net (in shares)		1,675
Forward Sale Arrangements
Earnings Per Share
Number of arrangements | Arrangement		4
Anticipated proceeds of share issuance | $		$ 277,500
Average price of shares issued (in dollars per share) | $ / shares		$ 29.46
Forward Sale Arrangement Maturing in Late 2020
Earnings Per Share
Number of arrangements | Arrangement		3
Forward Sale Arrangements Maturing in 2021
Earnings Per Share
Number of arrangements | Arrangement		1

[1] Includes amounts attributable to redeemable noncontrolling interests for the three months ended March 31, 2019.