XML 34 R63.htm IDEA: XBRL DOCUMENT
v3.20.1

Subsequent Events (Details) - Subsequent Event | May 05, 2020 $ / shares | Apr. 06, 2020 $ / bbl bbl
--- | --- | ---
Subsequent Event [Line Items] |  |
Dividend rate (in dollars per share) | $ / shares | $ 0.025 |
Oil Swap |  |
Subsequent Event [Line Items] |  |
Notional amount, barrels per day (in barrels) |  | 1,400
Notional amount, barrels per month (in barrels) |  | 42,000
Swap fixed price (in dollars per barrel) | $ / bbl |  | 32

X
- Definition Derivative, Nonmonetary Notional Amount, Volume Per Month + References No definition available. + Details
Name: | epm_DerivativeNonmonetaryNotionalAmountVolumePerMonth
Namespace Prefix: | epm_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition Derivative, Nonmonetary Notional Amount, Volume Per day + References No definition available. + Details
Name: | epm_DerivativeNonmonetaryNotionalAmountVolumePerday
Namespace Prefix: | epm_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fixed price related to the price risk swap derivative. + References No definition available. + Details
Name: | us-gaap_DerivativeSwapTypeFixedPrice
Namespace Prefix: | us-gaap_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=epm_OilSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |