Selected Quarterly Financial Data of HTA (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Selected Quarterly Financial Data [Line Items]
Revenues									$ 403,822	$ 371,505	$ 321,601
Net income									33,557	45,994	24,684
Net income attributable to common stockholders									$ 32,931	$ 45,371	$ 24,261
Earnings per common share - basic:
Net income attributable to common stockholders (usd per share)									$ 0.26	$ 0.38	$ 0.21	[1]
Earnings per common share - diluted:
Net income attributable to common stockholders (usd per share)									$ 0.26	$ 0.37	$ 0.21	[1]
HTA, Inc. [Member]
Selected Quarterly Financial Data [Line Items]
Revenues	$ 102,049	$ 103,942	$ 99,311	$ 98,520	$ 94,996	$ 95,534	$ 89,671	$ 91,304
Net income	10,573	6,554	9,488	6,942	21,457	16,220	2,883	5,434	$ 33,557	$ 45,994	$ 24,684
Net income attributable to common stockholders	$ 10,372	$ 6,463	$ 9,292	$ 6,804	$ 21,192	$ 16,032	$ 2,855	$ 5,292	$ 32,931	$ 45,371	$ 24,261
Earnings per common share - basic:
Net income attributable to common stockholders (usd per share)	$ 0.08	$ 0.05	$ 0.07	$ 0.05	$ 0.17	$ 0.13	$ 0.02	$ 0.04	$ 0.26	$ 0.38	$ 0.21	[1]
Earnings per common share - diluted:
Net income attributable to common stockholders (usd per share)	$ 0.08	$ 0.05	$ 0.07	$ 0.05	$ 0.17	$ 0.13	$ 0.02	$ 0.04	$ 0.26	$ 0.37	$ 0.21	[1]

[1] For the year ended December 31, 2013, amounts have been adjusted retroactively to reflect the Reverse Stock Split effected on December 15, 2014.