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- References

No definition available.

Name:	crbo_BusinessCombinationNotesPayable
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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Business combination recognized identifiable assets acquired and liabilities assumed commodity derivative asset.

No definition available.

Name:	crbo_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCommodityDerivativeAsset
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business combination recognized identifiable assets acquired and liabilities assumed due to related parties.

No definition available.

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Namespace Prefix:	crbo_
Data Type:	xbrli:monetaryItemType
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Business combination recognized identifiable assets acquired and liabilities assumed firm transportation.

No definition available.

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Namespace Prefix:	crbo_
Data Type:	xbrli:monetaryItemType
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Business combination recognized identifiable assets acquired and liabilities assumed other property and equipment.

No definition available.

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Amount of proved oil and gas properties and related support facilities expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Business combination recognized identifiable assets acquired and liabilities assumed revenue.

No definition available.

Name:	crbo_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRevenue
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Data Type:	xbrli:monetaryItemType
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Business combination recognized identifiable assets acquired and liabilities assumed trade receivable.

No definition available.

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Amount of unproved oil and gas properties and related support facilities.

No definition available.

Name:	crbo_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedUnprovedOilAndGasPropertiesAndRelatedSupportFacilities
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Data Type:	xbrli:monetaryItemType
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- References

No definition available.

Name:	crbo_OilAndGasPropertiesAcquiredAbstract
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Data Type:	xbrli:stringItemType
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Current portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

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Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

The amount of inventory recognized as of the acquisition date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=108330185&loc=d3e2207-128464

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=108330185&loc=d3e2207-128464

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.