SEGMENT INFORMATION - General Information and Customer Concentration (Details) |
3 Months Ended | 12 Months Ended |
|---|---|---|
|
Mar. 31, 2018
hospital
state
|
Dec. 31, 2017
hospital
|
|
| Segment Reporting Information [Line Items] | ||
| Number of surgical hospitals | 21 | |
| Conifer | ||
| Segment Reporting Information [Line Items] | ||
| Ownership percentage by parent | 76.20% | |
| Minimum | Conifer | ||
| Segment Reporting Information [Line Items] | ||
| Number of hospitals to which segment of the entity provides revenue cycle services | 800 | |
| United Surgical Partners International | ||
| Segment Reporting Information [Line Items] | ||
| Number of ambulatory surgery centers | 251 | |
| Number of urgent care centers | 34 | |
| Number of diagnostic imaging centers | 23 | |
| Number of states where operations occur | state | 27 | |
| Ownership percentage by parent | 80.00% | |
| European Surgical Partners Ltd | ||
| Segment Reporting Information [Line Items] | ||
| Number of facilities owned by subsidiaries | 9 | 9 |