SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Lease Cost Recognized (Detail) - 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] | ||||
| Operating lease cost | $ 29,629 | $ 25,316 | $ 96,990 | $ 68,071 |
| Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense | ||||
| Lessee, Lease, Description [Line Items] | ||||
| Operating lease cost | 427 | 427 | 1,272 | 1,277 |
| Location, Statement of Income, Balance [Axis]: crk:LeaseOperatingExpenses | ||||
| Lessee, Lease, Description [Line Items] | ||||
| Operating lease cost | $ 597 | $ 629 | $ 1,777 | $ 1,673 |