Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

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:

	March 31, 2019
	Fair Value			Fair Value Measurement Classification
Description	Measurement			Level 1		Level 2			Level 3
Assets:
Commodity derivative assets – current	$	2,658		$	—	$	2,658		$	—
Commodity derivative assets – noncurrent	229			—		229			—
Liabilities:
Commodity derivative liabilities – current	$	(25,107	)	$	—	$	(25,107	)	$	—
Commodity derivative liabilities – noncurrent	(6,150		)	—		(6,150		)	—

	December 31, 2018
	Fair Value			Fair Value Measurement Classification
Description	Measurement			Level 1		Level 2			Level 3
Assets:
Commodity derivative assets – current	$	34,932		$	—	$	34,932		$	—
Commodity derivative assets - noncurrent	10,100			—		10,100			—
Liabilities:
Commodity derivative liabilities – current	$	(991	)	$	—	$	(991	)	$	—
Commodity derivative liabilities – noncurrent	—			—		—			—