| elementCreationTaxonomyVersion | 2012 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| SourceName | Taxonomy Technical Improvement | http://fasb.org/srt/role/changeNote/changeNote |
| TaxonomyVersion | 2019 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2018-10 | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedLabels | true | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedDocumentation | true | http://fasb.org/srt/role/changeNote/changeNote |
| PreviousDocumentation | Period remaining on leases or concessions that will expire on undeveloped acreage, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. | http://fasb.org/srt/role/changeNote/changeNote |
| Publisher | SEC | http://www.xbrl.org/2009/role/commonPracticeRef |
| Name | Regulation S-K (SK) | http://www.xbrl.org/2009/role/commonPracticeRef |
| Number | 229 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Section | 1208 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Paragraph | (b) | http://www.xbrl.org/2009/role/commonPracticeRef |