| Standard label: | Facility Costs | 
| Name: | us-gaap:FacilityCosts | 
| Documentation: | Facility expenses incurred related to gas and oil produced and sold during the reporting period. | 
| Object type: | cm:Concept | 
| Data type: | Monetary (xbrli:monetaryItemType) | 
| Period type: | For Period (duration) | 
| Balance type: | Debit | 
| Abstract: | false | 
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:FacilityCosts | 
| Label | Role | Language | 
| Facility Costs | http://www.xbrl.org/2003/role/label | en-US | 
| Reference | Role | Topic | 
| FASB Accounting Standards Codification 220 10 S99 2 (SX 210.5-03.2) | http://fasb.org/us-gaap/role/ref/otherTransitionRef | 220 | 
| FASB Accounting Standards Codification 932 235 50 23 | http://fasb.org/us-gaap/role/ref/otherTransitionRef | 932 |