Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following tables summarize the valuation of those assets and liabilities as of the dates presented:

	June 30, 2017
	Fair Value			Fair Value Measurement Classification
Description	Measurement			Level 1		Level 2			Level 3
Assets:
Commodity derivative assets – current	$	2,672		$	—	$	2,672		$	—
Commodity derivative assets – noncurrent	584			—		584			—
Liabilities:
Commodity derivative liabilities – current	$	—		$	—	$	—		$	—
Commodity derivative liabilities – noncurrent	(90		)	—		(90		)	—

	December 31, 2016
	Fair Value			Fair Value Measurement Classification
Description	Measurement			Level 1		Level 2			Level 3
Liabilities:
Commodity derivative liabilities – current	$	(12,932	)	$	—	$	(12,932	)	$	—
Commodity derivative liabilities – noncurrent	(14,437		)	—		(14,437		)	—