Business Acquisition, Cost of Acquired Entity, Cash Paid Plus Purchase Price Adjustment

No definition available.

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- Definition

Business Combinations, Contingent Consideration Arrangements, Range of Outcomes, Value, High, Fair Value

+ References

No definition available.

+ Details

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- Definition

Sales to a single specific customer as a percentage of total revenue.

+ References

No definition available.

+ Details

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- Definition

Entity-Wide Revenue, Number of Major Customers

+ References

No definition available.

+ Details

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- Definition

Entity-Wide Revenue, Number of Major Customers, Other

+ References

No definition available.

+ Details

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- Definition

Oil and Gas Properties, Working Interest Sold, Percentage

+ References

No definition available.

+ Details

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- Definition

Participating Interest Percentage Oil And GasProperty, Remaining Percentage

+ References

No definition available.

+ Details

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- Definition

Proceeds from Oil and Gas Property from Termination of Farm-in Agreement

+ References

No definition available.

+ Details

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- Details

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- Definition

The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

+ Details

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- Details

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- Details

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- Details

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Segment and Geographic Reporting - Narrative (Details) (USD $)	12 Months Ended			3 Months Ended	0 Months Ended		3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013	Oct. 08, 2012	Jan. 20, 2012	Jun. 30, 2013
Concentration Risk [Line Items]
Proceeds from oil and gas properties	$ 0	$ 55,524,000	$ 0
Brazil [Member]
Concentration Risk [Line Items]
Proceeds from termination of farm-in agreement				54,000,000
Block-Brazil [Member]
Concentration Risk [Line Items]
Cash paid					35,495,000
Fair value of contingent consideration payable					1,061,000
Participating interest percentage oil and gas property, remaining percentage					30.00%	30.00%
Colombia [Member]
Concentration Risk [Line Items]
Number of significant customers	2
Number of other major customers	1
Colombia [Member] \| Ecopetrol [Member]
Concentration Risk [Line Items]
Sales to Ecopetrol, as a percentage of total revenue (in hundredths)	52.00%	46.00%	85.00%
Colombia [Member] \| Other Customer Number Two [Member]
Concentration Risk [Line Items]
Sales to Ecopetrol, as a percentage of total revenue (in hundredths)	32.00%	42.00%	2.00%
Colombia [Member] \| Mecaya Block [Member]
Concentration Risk [Line Items]
Proceeds from oil and gas properties							$ 1,500,000
Working interest sold, percentage							15.00%