LEASES - Schedule of Operating Lease Expenses (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Lessee, Lease, Description [Line Items] | ||||
| Cost of services | $ 8,076 | $ 6,787 | $ 22,977 | $ 19,827 |
| Lease, cost | 75,326 | 68,510 | 222,640 | 196,234 |
| Accrued rent expense adjustments | 270 | 225 | 846 | 632 |
| Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense | ||||
| Lessee, Lease, Description [Line Items] | ||||
| Operating lease expense | 280 | 195 | 775 | 608 |
| Income Statement Location [Axis]: ensg:RentCostOfServices | ||||
| Lessee, Lease, Description [Line Items] | ||||
| Operating lease expense | 66,970 | 61,528 | 198,888 | 175,799 |
| CPI increases and short term-lease cost | $ 5,638 | $ 4,922 | $ 15,896 | $ 13,560 |