Number of options rolled by the Company.

No definition available.

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- Definition

Nominal energy measure used to calculate payments on a derivative instrument.

+ References

No definition available.

+ Details

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- Definition

The strike price on the price risk option contract such as a put option or a call option.

+ References

No definition available.

+ Details

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- Definition

The cash outflow for derivative instruments during the period, which are classified as investing activities, excluding those designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

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- Definition

The cash inflow provided by derivative instruments during the period, which are classified as investing activities, excluding those designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

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- Details

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- Details

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- Details

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- Details

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Note 7 - Fair Value of Financial Instruments (Details Textual) $ in Millions				1 Months Ended
	Jan. 12, 2017 USD ($) MMBTU $ / BTU	Feb. 24, 2016 USD ($) Boe $ / item	Feb. 02, 2016 USD ($) Boe $ / item	Mar. 31, 2016 Boe $ / item	Feb. 28, 2018 $ / item	Feb. 28, 2016 $ / item
Derivative, Number of Options Rolled				2
Henry Hub Natural Gas Future ("NG") Contracts [Member] \| Put Option [Member]
Derivative, Nonmonetary Notional Amount, Energy Measure	4.1		4,100,000
Derivative, Price Risk Option Strike Price	3		2
Payments for Derivative Instrument, Investing Activities \| $	$ 0.7
Henry Hub Natural Gas Future ("NG") Contracts [Member] \| Call Option [Member]
Proceeds from Derivative Instrument, Investing Activities \| $			$ 1.9
Brent Oil Future Contracts [Member]
Derivative, Nonmonetary Notional Amount, Energy Measure \| Boe		185,000
Brent Oil Future Contracts [Member] \| Minimum [Member]
Derivative, Price Risk Option Strike Price		32.8
Brent Oil Future Contracts [Member] \| Maximum [Member]
Derivative, Price Risk Option Strike Price		35.5
Brent Oil Future Contracts [Member] \| Call Option [Member]
Proceeds from Derivative Instrument, Investing Activities \| $		$ 1.1
Rolled Two Existing Options [Member]
Derivative, Nonmonetary Notional Amount, Energy Measure \| Boe				31,800
Rolled Two Existing Options [Member] \| Minimum [Member]
Derivative, Price Risk Option Strike Price				41		32.8
Rolled Two Existing Options [Member] \| Maximum [Member]
Derivative, Price Risk Option Strike Price				42.5		33.5
Short Risk Reversal Transactions, Rolling Existing Call Option 1 [Member]
Derivative, Nonmonetary Notional Amount, Energy Measure \| Boe				16,500
Short Risk Reversal Transactions, Rolling Existing Call Option 1 [Member] \| Minimum [Member]
Derivative, Price Risk Option Strike Price						28.5
Short Risk Reversal Transactions, Rolling Existing Call Option 1 [Member] \| Maximum [Member]
Derivative, Price Risk Option Strike Price						37.5
Short Risk Reversal Transactions, Rolling Existing Call Option 2 [Member]
Derivative, Nonmonetary Notional Amount, Energy Measure \| Boe				17,000
Short Risk Reversal Transactions, Rolling Existing Call Option 2 [Member] \| Minimum [Member]
Derivative, Price Risk Option Strike Price					28
Short Risk Reversal Transactions, Rolling Existing Call Option 2 [Member] \| Maximum [Member]
Derivative, Price Risk Option Strike Price					38.5