Debt instrument covenant current ratio.

No definition available.

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- Definition

Debt instrument covenant interest coverage ratio.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility commitment level of amount to be borrowed.

+ References

No definition available.

+ Details

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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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.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20, 22
-Article 5

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- Definition

Description of the credit facility's borrowing capacity including discussion of how the borrowing capacity is determined (for example, borrowing capacity based on the amount of current assets).

+ 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 19, 22
-Article 5

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

Description of the conditions for borrowing under the credit facility including the nature of any restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

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- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

+ References

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Debt - Revolving Credit Agreement - Additional Information (Details) - USD ($)		12 Months Ended
	May. 02, 2014	Dec. 31, 2015	Nov. 03, 2015	Apr. 21, 2015	Feb. 28, 2015	Dec. 31, 2014	Nov. 10, 2014	Apr. 15, 2014	Dec. 30, 2013	Dec. 20, 2013	Oct. 21, 2013
Debt Instrument [Line Items]
Revolving credit agreement						$ 120,000,000
Revolving credit agreement covenants		The Revolving Credit Agreement requires the Company to maintain the following two financial ratios: a current ratio, which is the ratio of consolidated current assets (including unused availability under its revolving credit facility) to consolidated current liabilities of not less than 1.0 to 1.0 as of the last day of any fiscal quarter; and a minimum interest coverage ratio, which is the ratio of EBITDAX to interest expense, of not less than 2.5 to 1.0 as of the last day of any fiscal quarter for the four fiscal quarters ending on such date.
Current ratio		1.00%
Interest coverage ratio		2.50%
Revolving Credit Agreement
Debt Instrument [Line Items]
Revolving credit agreement, borrowing base		$ 750,000,000					$ 575,000,000
Revolving line of credit agreement maturity date		Sep. 10, 2018
Revolving credit agreement, borrowing capacity description		The Revolving Credit Agreement provides a revolving credit facility with a borrowing capacity up to the lesser of (i) the borrowing base (as defined in the Revolving Credit Agreement), (ii) aggregate lender commitments, and (iii) $750.0 million.
Revolving credit agreement, current borrowing base					$ 560,800,000	562,000,000		$ 327,500,000
Revolving credit agreement, commitment level					$ 365,000,000	$ 365,000,000	$ 365,000,000
Line of credit facility interest rate description		Eurodollar loans bear interest at a rate per annum equal to an adjusted LIBOR rate (equal to the product of: (a) the LIBOR rate, multiplied by (b) a fraction (expressed as a decimal), the numerator of which is the number one and the denominator of which is the number one minus the aggregate of the maximum reserve percentages (expressed as a decimal) on such date at which the Administrative Agent is required to maintain reserves on ‘Eurocurrency Liabilities’ as defined in and pursuant to Regulation D of the Board of Governors of the Federal Reserve System) plus an applicable margin ranging from 150 to 250 basis points, depending on the percentage of our borrowing base utilized. Alternate base rate loans bear interest at a rate per annum equal to the greatest of (i) the agent bank’s reference rate, (ii) the federal funds effective rate plus 50 basis points and (iii) the adjusted LIBOR rate (as calculated above) plus 100 basis points, plus an applicable margin ranging from 50 to 150 basis points, depending on the percentage of our borrowing base utilized.
Revolving Credit Agreement \| LIBO rate
Debt Instrument [Line Items]
Applicable margin basis rate		1.00%
Revolving Credit Agreement \| Federal funds
Debt Instrument [Line Items]
Applicable margin basis rate		0.50%
Revolving Credit Agreement \| Maximum
Debt Instrument [Line Items]
Revolving credit agreement, current borrowing base											$ 175,000,000
Revolving credit agreement, commitment fee		0.50%
Revolving Credit Agreement \| Maximum \| LIBO rate
Debt Instrument [Line Items]
Applicable margin basis rate		1.50%
Revolving Credit Agreement \| Maximum \| Federal funds
Debt Instrument [Line Items]
Applicable margin basis rate		2.50%
Revolving Credit Agreement \| Minimum
Debt Instrument [Line Items]
Revolving credit agreement, current borrowing base											$ 143,800,000
Revolving credit agreement, commitment fee		0.375%
Revolving Credit Agreement \| Minimum \| LIBO rate
Debt Instrument [Line Items]
Applicable margin basis rate		0.50%
Revolving Credit Agreement \| Minimum \| Federal funds
Debt Instrument [Line Items]
Applicable margin basis rate		1.50%
Revolving Credit Agreement \| Weighted Average
Debt Instrument [Line Items]
Revolving credit agreement, weighted average interest rate		1.77%
Revolving Credit Agreement \| Merit Acquisition \| Maximum
Debt Instrument [Line Items]
Revolving credit agreement, current borrowing base									$ 280,000,000
Revolving Credit Agreement \| Merit Acquisition \| Minimum
Debt Instrument [Line Items]
Revolving credit agreement, current borrowing base									$ 240,000,000
Revolving Credit Agreement \| First Amendment \| Maximum
Debt Instrument [Line Items]
Revolving credit agreement, current borrowing base										$ 240,000,000
Revolving Credit Agreement \| First Amendment \| Minimum
Debt Instrument [Line Items]
Revolving credit agreement, current borrowing base										$ 143,800,000
Revolving Credit Agreement \| Amended And Restated Credit Agreement
Debt Instrument [Line Items]
Revolving credit agreement, borrowing base								227,500,000
Amended and restated credit agreement, expiration date	15 months
Revolving Credit Agreement \| Third Amendment
Debt Instrument [Line Items]
Revolving credit agreement, borrowing base								$ 365,000,000
Revolving Credit Agreement \| Fourth Amendment
Debt Instrument [Line Items]
Amended and restated credit agreement, expiration date	18 months
Revolving Credit Agreement \| Eighth Amendment
Debt Instrument [Line Items]
Revolving credit agreement, borrowing base				$ 500,000,000
Revolving credit agreement, commitment level				$ 500,000,000
Revolving Credit Agreement \| Ninth Amendment
Debt Instrument [Line Items]
Revolving credit agreement, borrowing base			$ 575,000,000
Revolving credit agreement, current borrowing base			$ 575,000,000
Revolving credit agreement		$ 0
Letters of credit outstanding, Amount		300,000
Revolving credit agreement, borrowing remaining		$ 574,700,000