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Investments in Real Estate - Acquisitions (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021
Investments [Abstract] |  |
Aggregate purchase price | $ 25,666 | $ 53,025
Closing costs | $ 200 |

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- Definition Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Including Other, Net + References No definition available. + Details
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Namespace Prefix: | hta_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Asset Acquisition, Transaction Costs Capitalized + References No definition available. + Details
Name: | hta_AssetAcquisitionTransactionCostsCapitalized
Namespace Prefix: | hta_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_InvestmentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration