Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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-Publisher FASB
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-SubTopic 210
-Section S99
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Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.

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-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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Non-controlling Interests (Summary of Non-controlling Interests) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Noncontrolling Interest [Line Items]
Third Party Net Investment Amount	$ 5,237		$ 5,410
Net Real Estate Assets Subject to Investment Arrangement	2,182,960		2,053,591
Distributions	86	$ 85
Non-controlling Interests
Noncontrolling Interest [Line Items]
Distributions	86	85
Plaza Del Rio Medical Office Campus Portfolio - Peoria, AZ \| Non-controlling Interests
Noncontrolling Interest [Line Items]
Third Party Net Investment Amount	330
Net Real Estate Assets Subject to Investment Arrangement	14,099		14,220
Distributions	87	87
UnityPoint Clinic Portfolio \| Non-controlling Interests
Noncontrolling Interest [Line Items]
Third Party Net Investment Amount	488
Net Real Estate Assets Subject to Investment Arrangement	8,744		$ 8,842
Distributions	$ 0	$ 0
Healthcare Trust Operating Partnership, L.P. \| Plaza Del Rio Medical Office Campus Portfolio - Peoria, AZ \| Non-controlling Interests
Noncontrolling Interest [Line Items]
Non-Controlling Ownership Percentage	1.90%
Healthcare Trust Operating Partnership, L.P. \| UnityPoint Clinic Portfolio \| Non-controlling Interests
Noncontrolling Interest [Line Items]
Non-Controlling Ownership Percentage	5.00%