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OIL AND NATURAL GAS PROPERTIES (Details) | 6 Months Ended
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Jun. 30, 2018 $ / MMBTU $ / bbl | Jun. 30, 2017 $ / MMBTU $ / bbl
Ceiling Limitation Disclosures |  |
First day average of the (WTI) crude oil spot price (in dollars per barrel) | $ / bbl | 57.67 | 48.95
First day average of the Henry Hub natural gas price (in dollars per Mmbtu) | $ / MMBTU | 2.92 | 3.01

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- Definition Represents the per unit first day average of the Henry Hub natural gas price for the twelve months ended as of the reporting date. + References No definition available. + Details
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- Definition Represents the per unit first day average of the West Texas Intermediate (WTI) crude oil spot price. + References No definition available. + Details
Name: | hk_OilAndGasPricesFirstDayAverageOfTwelveMonthsOfWestTexasIntermediateSpotMarketPriceForCeilingTest
Namespace Prefix: | hk_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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