Fair Value Measurements

The Company measures and reports certain assets and liabilities on a fair value basis and has classified and disclosed its fair value measurements using the following levels of the fair value hierarchy:



Level 1	Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.

Level 2	Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability.

Level 3	Measurement based on prices or valuation models that require inputs that are both significant to the fair value measurement and less observable for objective sources (i.e., supported by little or no market activity).

Assets and liabilities that are measured at fair value are classified based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement requires judgment, which may affect the valuation of the fair value of assets and liabilities and their placement within the fair value hierarchy levels. The determination of the fair values, stated below, considers the market for the Company’s financial assets and liabilities, the associated credit risk and other factors. The Company considers active markets as those in which transactions for the assets or liabilities occur in sufficient frequency and volume to provide pricing information on an ongoing basis. The Company has assets and liabilities classified in each level of the hierarchy as of September 30, 2016 and December 31, 2015, as described below.

Level 1 Fair Value Measurements

Investments. The fair value of investments, consisting of assets attributable to the Company’s non-qualified deferred compensation plan, is based on quoted market prices. Investments are included in other assets in the accompanying unaudited condensed consolidated balance sheets.

Level 2 Fair Value Measurements

Commodity Derivative Contracts. The fair values of the Company’s oil and natural gas fixed price swaps are based upon inputs that are either readily available in the public market, such as oil and natural gas futures prices, volatility factors and discount rates, or can be corroborated from active markets. Fair value is determined through the use of a discounted cash flow model or option pricing model using the applicable inputs, discussed above. The Company applies a weighted average credit default risk rating factor for its counterparties or gives effect to its credit default risk rating, as applicable, in determining the fair value of these derivative contracts. Credit default risk ratings are based on current published credit default swap rates.

Mandatory Prepayment Feature - PGC Senior Secured Notes. In conjunction with the acquisition of and termination of a gathering agreement with PGC in October 2015, the Company issued the PGC Senior Secured Notes with a $78.0 million principal value. The PGC Senior Secured Notes were issued at a substantial discount, as discussed in Note 6 and Note 7, which resulted in the treatment of the related mandatory prepayment feature as an embedded derivative that met the criteria to be bifurcated from its host contract and accounted for separately from the PGC Senior Secured Notes. Prior to the Chapter 11 filings, the mandatory prepayment feature was recorded at fair value each reporting period based upon values determined through the use of discounted cash flow models of the PGC Senior Secured Notes both (i) with the mandatory prepayment feature and (ii) excluding the mandatory prepayment feature. Subsequent to the Chapter 11 filings in May 2016, the value of the mandatory repayment feature of $2.5 million was written off and is included in reorganization items in the accompanying unaudited condensed consolidated statement of operations for the nine-month period ended September 30, 2016.

Level 3 Fair Value Measurements

Commodity Derivative Contracts. The fair values of the Company’s natural gas basis swaps are based upon quotes obtained from counterparties to the derivative contracts. These values were reviewed internally for reasonableness through the use of a discounted cash flow model using non-exchange traded regional pricing information. Additionally, the Company applied a weighted average credit default risk rating factor for its counterparties or gave effect to its credit risk, as applicable, in determining the fair value of these commodity derivative contracts. The significant unobservable input used in the fair value measurement of the Company’s natural gas basis swaps is the estimate of future natural gas basis differentials. Significant increases (decreases) in natural gas basis differentials could result in a significantly higher (lower) fair value measurement. The significant unobservable inputs and the range and weighted average of these inputs used in the fair value measurements of the Company’s natural gas basis swaps at September 30, 2016 and December 31, 2015 are included in the table below.



Unobservable Input	Range							Weighted Average			Fair Value
	(Price per Mcf)										(In thousands)
September 30, 2016
Natural gas basis differential forward curve	$	(0.13	)	–	$	(0.25	)	$	(0.20	)	$	(170	)
December 31, 2015
Natural gas basis differential forward curve	$	(0.06	)	–	$	(0.28	)	$	(0.22	)	$	(1,748	)

Debt Holder Conversion Feature. The Company’s Convertible Senior Unsecured Notes each contain a conversion option whereby, prior to the Chapter 11 filings, the Convertible Senior Unsecured Notes holders had the option to convert the notes into shares of Company common stock. Further, with respect to any such conversions prior to the second anniversary of the issuance of the Convertible Senior Unsecured Notes, in addition to the shares deliverable upon conversion, holders were entitled to receive an early conversion payment. These conversion features were identified as embedded derivatives that met the criteria to be bifurcated from their host contracts and accounted for separately from the Convertible Senior Unsecured Notes. Prior to the Chapter 11 filings, the holder conversion features were recorded at fair value each reporting period. Subsequent to the Chapter 11 filings, the value of the debt holder conversion features of $7.3 million was written off and is included in reorganization items in the accompanying unaudited condensed consolidated statement of operations for the nine-month period ended September 30, 2016.

The fair values of the holder conversion features were determined using a binomial lattice model based on certain assumptions including (i) the Company’s stock price, (ii) risk-free rate, (iii) recovery rate, (iv) hazard rate and (v) expected volatility. The significant unobservable input used in the fair value measurement of the conversion features is the hazard rate, an estimate of default probability. Significant increases (decreases) in the hazard rate could result in significantly (lower) higher fair value measurement. The significant unobservable inputs and range and weighted average of these inputs used in the fair value measurement of the conversion options at December 31, 2015 are included in the table below.



Unobservable Input	Range					Weighted Average		Fair Value
								(In thousands)
Debt conversion feature hazard rate	114.0	%	–	135.2	%	119.2	%	$	29,355

See further discussion of the Convertible Senior Unsecured Notes at Note 6.

Fair Value - Recurring Measurement Basis

The following tables summarize the Company’s assets and liabilities measured at fair value on a recurring basis by the fair value hierarchy (in thousands):

September 30, 2016



	Fair Value Measurements						Netting(1)			Assets/Liabilities at Fair Value
	Level 1		Level 2		Level 3		Netting(1)			Assets/Liabilities at Fair Value
Assets
Commodity derivative contracts	$	—	$	11,429	$	—	$	(1,167	)	$	10,262
Investments	7,263		—		—		—			7,263
	$	7,263	$	11,429	$	—	$	(1,167	)	$	17,525
Liabilities
Commodity derivative contracts	$	—	$	4,914	$	170	$	(1,167	)	$	3,917
	$	—	$	4,914	$	170	$	(1,167	)	$	3,917

December 31, 2015



	Fair Value Measurements						Netting(1)			Assets/Liabilities at Fair Value
	Level 1		Level 2		Level 3		Netting(1)			Assets/Liabilities at Fair Value
Assets
Commodity derivative contracts	$	—	$	85,524	$	—	$	(1,175	)	$	84,349
Investments	10,106		—		—		—			10,106
	$	10,106	$	85,524	$	—	$	(1,175	)	$	94,455
Liabilities
Commodity derivative contracts	$	—	$	—	$	1,748	$	(1,175	)	$	573
Debt holder conversion feature	—		—		29,355		—			29,355
Mandatory prepayment feature - PGC Senior Secured Notes	—		2,941		—		—			2,941
	$	—	$	2,941	$	31,103	$	(1,175	)	$	32,869

____________________

(1)Represents the effect of netting assets and liabilities for counterparties with which the right of offset exists.

Level 3 - Commodity Derivative Contracts. The table below sets forth a reconciliation of the Company’s Level 3 fair value measurements for commodity derivative contracts during the three and nine-month periods ended September 30, 2016 and 2015 (in thousands):



	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Beginning balance	$	(356	)	$	(2,207	)	$	(1,748	)	$	350
Purchases	—			—			—			(2,894		)
Gain (loss) on commodity derivative contracts	186			(1,229		)	1,578			(892		)
Ending balance	$	(170	)	$	(3,436	)	$	(170	)	$	(3,436	)

Losses due to changes in fair value of the Company’s Level 3 commodity derivative contracts have been included in (gain) loss on derivative contracts in the accompanying unaudited condensed consolidated statements of operations. See Note 7 for further discussion of the Company’s derivative contracts.

Level 3 - Debt Holder Conversion Feature. The table below sets forth a reconciliation of the Company’s Level 3 fair value measurements for debt holder conversion features during the three and nine-month periods ended September 30, 2015 and the nine-month period ended September 30, 2016 (in thousands):



	Three Months Ended September 30,			Nine Months Ended September 30,
	2015			2016			2015
Beginning balance	$	—		$	29,355		$	—
Issuances	16,994			—			16,994
Gain on derivative holder conversion feature	(10,146		)	(880		)	(10,146		)
Conversions	(1,374		)	(21,194		)	(1,374		)
Write off of derivative holder conversion feature to reorganization items	—			(7,281		)	—
Ending balance	$	5,474		$	—		$	5,474

Prior to commencement of the Chapter 11 Proceedings, the fair value of the conversion features were determined quarterly with changes in fair value recorded as interest expense.

Transfers. The Company recognizes transfers between fair value hierarchy levels as of the end of the reporting period in which the event or change in circumstances causing the transfer occurred. During the three and nine-month periods ended September 30, 2016 and 2015, the Company did not have any transfers between Level 1, Level 2 or Level 3 fair value measurements.

Fair Value of Financial Instruments

The Company measures the fair value of its Senior Secured Notes and the Unsecured Notes using pricing that is readily available in the public market. The Company classifies these inputs as Level 2 in the fair value hierarchy. The estimated fair values and carrying values of the Company’s senior notes at September 30, 2016 and December 31, 2015 were as follows (in thousands):



	September 30, 2016 (1)				December 31, 2015
	Fair Value		Carrying Value		Fair Value		Carrying Value
8.75% Senior Secured Notes	$	487,207	$	1,328,000	$	403,098	$	1,265,814
Senior Unsecured Notes
8.75% Senior Notes due 2020	$	28,579	$	395,935	$	39,740	$	389,232
7.5% Senior Notes due 2021	$	47,019	$	757,767	$	79,812	$	751,087
8.125% Senior Notes due 2022	$	30,047	$	527,737	$	57,749	$	518,693
7.5% Senior Notes due 2023	$	34,589	$	543,561	$	58,799	$	534,869
Convertible Senior Unsecured Notes
8.125% Convertible Senior Notes due 2022	$	2,339	$	40,694	$	44,199	$	78,290
7.5% Convertible Senior Notes due 2023	$	28	$	46,900	$	15,125	$	24,393

____________________


(1)	Includes write-off of discounts and derivatives associated with the 8.75% Senior Secured Notes and the Convertible Senior Unsecured Notes, discounts associated with the 8.75% Senior Notes due 2020 and the 7.5% Senior Notes due 2023, and premium associated with the 7.5% Senior Notes due 2021 due to the Company's Chapter 11 proceedings.

All of the Company’s senior notes are stated at carrying value, which has been adjusted to par value, in liabilities subject to compromise on the accompanying unaudited condensed consolidated balance sheet as of September 30, 2016. See Note 6 for discussion of the Company’s debt.