Closing Share Price

No definition available.

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- Definition

The aggregate foreign currency transaction gain (loss) (both realized and unrealized) if there were a one Columbian Peso change against the U.S. Dollar.

+ References

No definition available.

+ Details

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- Definition

Percentage of Revenues Denominated in United States Dollars

+ References

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611

+ Details

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Paragraph 1
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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
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Financial Instruments, Fair Value Measurement, Credit Risk and Foreign Exchange Risk - Narrative (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) $ / shares	Dec. 31, 2018 USD ($) $ / shares	Dec. 31, 2017	Dec. 31, 2019 $ / shares	May 20, 2019	Dec. 31, 2018 $ / shares	Feb. 15, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment - current and long-term assets	$ 94,741	$ 41,435
Foreign exchange losses for each one peso decrease in exchange rate of Colombian peso to one U.S. dollar	$ (6)
Colombia
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Revenues received in U.S. dollars (as a percent)	100.00%
Colombia \| Geographic Concentration Risk \| Oil and natural gas sales
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Sales to each significant customer as % of oil and gas sales	100.00%	100.00%	98.00%
6.25% Senior Notes \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate	6.25%						6.25%
7.75% Senior Notes due 2027 \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate	7.75%				7.75%
Reported Value Measurement \| 6.25% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value disclosure	$ 290,700
Reported Value Measurement \| 7.75% Senior Notes due 2027
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value disclosure	289,900
Estimate of Fair Value Measurement \| 6.25% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value disclosure	272,800
Estimate of Fair Value Measurement \| 7.75% Senior Notes due 2027
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value disclosure	279,100
PetroTal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment - current and long-term assets	$ 94,700
Closing share price (in dollars per share) \| (per share)	$ 0.38	$ 0.17		$ 0.50		$ 0.24