Name:	us-gaap_DerivativeAverageFloorPrice
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Data Type:	srt-types:perUnitItemType
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_DerivativeLineItems
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Data Type:	xbrli:stringItemType
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Period Type:	duration

Nominal volume used to calculate payments on a derivative instrument.

No definition available.

Name:	us-gaap_DerivativeNonmonetaryNotionalAmountVolume
Namespace Prefix:	us-gaap_
Data Type:	num:volumeItemType
Balance Type:	na
Period Type:	duration

Average fixed price related to the group of price risk swap derivatives.

No definition available.

Name:	us-gaap_DerivativeSwapTypeAverageFixedPrice
Namespace Prefix:	us-gaap_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13(h))
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

Name:	us-gaap_GainLossOnSaleOfDerivatives
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Data Type:	xbrli:monetaryItemType
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Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
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Name:	us-gaap_DerivativeInstrumentRiskAxis=lone_OilSwapMember
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Data Type:	na
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Name:	us-gaap_DerivativeInstrumentRiskAxis=lone_NaturalGasSwapMember
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Name:	us-gaap_DerivativeInstrumentRiskAxis=lone_NaturalGasHenryHubSwapsJanuaryToDecemberTwoThousandTwentyOneMember
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Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
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Name:	us-gaap_DerivativeInstrumentRiskAxis=lone_NaturalGasHenryHubSwapsJanuaryToDecemberTwoThousandTwentyTwoMember
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Name:	us-gaap_DerivativeInstrumentRiskAxis=lone_OilWTISwapsDecemberTwoThousandTwentyMember
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