Fair Value Measurements [Line Items]

No definition available.

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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=109250915&loc=d3e13433-108611

+ Details

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Period Type:	instant

- 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
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=114001942&loc=d3e12355-112629

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-URI http://asc.fasb.org/extlink&oid=114001942&loc=d3e12317-112629

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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- Definition

The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

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-Name Accounting Standards Codification
-Topic 932
-SubTopic 360
-Section 35
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=66906256&loc=d3e66150-109466

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- Details

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Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value Measurements [Line Items]
Non-cash impairment of oil and gas properties	$ 0
Debt Instrument, Fair Value Disclosure	594,400	$ 661,400
Gains (Losses) on Extinguishment of Debt	$ (257)	(8,239)	$ 8,726
7.625% Senior Notes [Member]
Fair Value Measurements [Line Items]
Debt, stated interest rate	7.625%
Gains (Losses) on Extinguishment of Debt		(7,900)	$ 8,700
Eight Point Seven Five Percentage Senior Notes [Member]
Fair Value Measurements [Line Items]
Debt, stated interest rate	8.75%
Debt Instrument, Fair Value Disclosure	$ 264,700	305,300
7.0% Senior Notes [Member]
Fair Value Measurements [Line Items]
Debt, stated interest rate	7.00%
Debt Instrument, Fair Value Disclosure	$ 329,700	356,100
Amended Credit Facility [Member]
Fair Value Measurements [Line Items]
Debt Instrument, Fair Value Disclosure	0
Lease Financing Obligation [Member]
Fair Value Measurements [Line Items]
Debt Instrument, Fair Value Disclosure	$ 1,800	$ 2,100