| **Summary of Significant Accounting Policies - Table 4 (Details)** | 12 Months Ended |
|--------------------------------------------------------------------|-----------------|
||
| Buildings [Member]                                                 |            |
| **Useful lives of assets**                                         |            |
| Minimum Useful Life                                                | 15              |
| Maximum Useful Life                                                | 30              |
| Leasehold improvements [Member]                                    |            |
| **Useful lives of assets**                                         |            |
| Minimum Useful Life                                                | 2               |
| Maximum Useful Life                                                | 15              |
| Furniture and Fixtures [Member]                                    |            |
| **Useful lives of assets**                                         |            |
| Minimum Useful Life                                                | 3               |
| Maximum Useful Life                                                | 10              |
| Real Estate [Member]                                               |            |
| **Useful lives of assets**                                         |            |
| Minimum Useful Life                                                | 15              |
| Maximum Useful Life                                                | 20              |
| Equipment [Member]                                                 |            |
| **Useful lives of assets**                                         |            |
| Minimum Useful Life                                                | 3               |
| Maximum Useful Life                                                | 5               |

| X                                                                                                                                                       |
|---------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**hls_UsefulLivesOfAssetsAbstract**Namespace Prefix:**hls_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The maximum useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.
+ References
No definition available.
+ Details**Name:**us-gaap_PropertyPlantAndEquipmentUsefulLifeMaximum**Namespace Prefix:**us-gaap_**Data Type:**xbrli:decimalItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The minimum useful life of long lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.
+ References
No definition available.
+ Details**Name:**us-gaap_PropertyPlantAndEquipmentUsefulLifeMinimum**Namespace Prefix:**us-gaap_**Data Type:**xbrli:decimalItemType**Balance Type:**na**Period Type:**duration |