LEASES - Schedule of Operating Lease Expenses (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Lessee, Lease, Description [Line Items] | ||||
| Cost of services | $ 7,922 | $ 6,611 | $ 14,901 | $ 13,040 |
| Lease, cost | 74,609 | 64,020 | 147,314 | 127,724 |
| Accrued rent expense adjustments | 255 | 199 | 576 | 407 |
| Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense | ||||
| Lessee, Lease, Description [Line Items] | ||||
| Operating lease expense | 275 | 214 | 495 | 413 |
| Income Statement Location [Axis]: ensg:RentCostOfServices | ||||
| Lessee, Lease, Description [Line Items] | ||||
| Operating lease expense | 66,412 | 57,195 | 131,918 | 114,271 |
| CPI increases and short term-lease cost | $ 5,127 | $ 4,634 | $ 10,258 | $ 8,638 |