| Cover | Aug. 29, 2024 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 29, 2024 |
| Entity File Number | 001-39153 |
| Entity Registrant Name | Healthcare Trust, Inc. |
| Entity Central Index Key | 0001561032 |
| Entity Tax Identification Number | 38-3888962 |
| Entity Incorporation, State or Country Code | MD |
| Entity Address, Address Line One | 222 Bellevue Ave |
| Entity Address, City or Town | Newport |
| Entity Address, State or Province | RI |
| Entity Address, Postal Zip Code | 02840 |
| City Area Code | 212 |
| Local Phone Number | 415-6500 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Series A Cumulative Redeemable Perpetual Preferred Stock [Member] | |
| Title of 12(b) Security | 7.375% Series A Cumulative Redeemable Perpetual Preferred Stock, $0.01 par value per share |
| Trading Symbol | HTIA |
| Security Exchange Name | NASDAQ |
| Series B Cumulative Redeemable Perpetual Preferred Stock [Member] | |
| Title of 12(b) Security | 7.125% Series B Cumulative Redeemable Perpetual Preferred Stock, $0.01 par value per share |
| Trading Symbol | HTIBP |
| Security Exchange Name | NASDAQ |
