Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Long-Term Debt - Principal Amount	$ 400,000	$ 400,000
Less: Debt Issuance Costs	(8,053)	(8,214)
Long-Term Debt, net	391,947	391,786
RBL Facility \| Line of credit
Debt Instrument [Line Items]
Long-Term Debt - Principal Amount	$ 0	$ 0
Variable rate	6.25%	4.50%
Security	85.00%
2026 Senior Unsecured Notes \| Senior notes
Debt Instrument [Line Items]
Long-Term Debt - Principal Amount	$ 400,000	$ 400,000
Interest Rate	7.00%

Debt Instrument, Collateral, Percentage Of Value Of Proven Oil And Gas Reserves And Lien On Other Assets

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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-Section 50
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- Definition

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

+ References

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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

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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- Definition

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

+ References

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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-Subparagraph (b)(3)
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