Business Combinations Acreage Acquired, Gross

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- Definition

Business Combinations Acreage Acquired, Net

+ References

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- Definition

Business Combinations, Purchase Price Adjustments for Production, Revenues and Operating and Capital Expenditures

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- Definition

Minimum outstanding aggregate commitments.

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- Definition

Share based compensation arrangements by share based payment award options grants in period fair value.

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- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

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- Definition

Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)(2)

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- Definition

Number of shares issued for each share of convertible preferred stock that is converted.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (b)

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- Definition

The amount per share used to calculated dividend payments on preferred stock.

+ References

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

Number of share instruments newly issued under a share-based compensation plan.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

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Subsequent Events (Details Textual) (USD $)	12 Months Ended	0 Months Ended	1 Months Ended	0 Months Ended	12 Months Ended
Subsequent Events (Details Textual) (USD $)	Dec. 31, 2014	Mar. 14, 2014	Feb. 28, 2014	Feb. 27, 2015	Dec. 31, 2013
Derivative [Line Items]
Stock option awards granted	419,000
Weighted average exercise price, Options granted	$ 23.19
Vesting period of shares	4 years
Minimum outstanding commitments	$ 21,000,000
Restricted Stock [Member]
Derivative [Line Items]
Vesting period of shares	3 years
Subsequent Event [Member]
Derivative [Line Items]
Stock option awards granted			607,995
Weighted average exercise price, Options granted			$ 22.01
Fair value of awards			8,400,000
Vesting period of shares		3 years
Minimum outstanding commitments				17,100,000
Subsequent Event [Member] \| Restricted Stock [Member]
Derivative [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period			113,289
Heyco Acquisition [Member] \| Subsequent Event [Member]
Derivative [Line Items]
Business Combinations Acreage Acquired, Gross				58,600
Business Combinations Acreage Acquired, Net				18,200
Business Combination, Consideration Transferred, Other				33,600,000
Business Combinations, Purchase Price Adjustments for Production, Revenues and Operating and Capital Expenditures				3,000,000
Preferred Stock, Dividend Rate, Per-Dollar-Amount				$ 1.80
Heyco Acquisition [Member] \| Common Stock [Member] \| Subsequent Event [Member]
Derivative [Line Items]
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable				3,300,000
Convertible Preferred Stock, Shares Issued upon Conversion				10
Heyco Acquisition [Member] \| Preferred Stock [Member] \| Subsequent Event [Member]
Derivative [Line Items]
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable				$ 150,000
Maximum [Member]
Derivative [Line Items]
Vesting period of shares	4 years
Maximum [Member] \| Restricted Stock [Member]
Derivative [Line Items]
Vesting period of shares	4 years				4 years
Maximum [Member] \| Subsequent Event [Member]
Derivative [Line Items]
Vesting period of shares	4 years
Minimum [Member]
Derivative [Line Items]
Vesting period of shares	3 years
Minimum [Member] \| Restricted Stock [Member]
Derivative [Line Items]
Vesting period of shares	1 year				1 year
Minimum [Member] \| Subsequent Event [Member]
Derivative [Line Items]
Vesting period of shares	3 years