Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 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:

	June 30, 2019
	Fair Value			Fair Value Measurement Classification
Description	Measurement			Level 1		Level 2			Level 3
Assets:
Commodity derivative assets – current	$	7,182		$	—	$	7,182		$	—
Commodity derivative assets – noncurrent	$	2,756		$	—	$	2,756		$	—
Liabilities:
Commodity derivative liabilities – current	$	(14,203	)	$	—	$	(14,203	)	$	—
Commodity derivative liabilities – noncurrent	$	(2,201	)	$	—	$	(2,201	)	$	—

	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	$	—		$	—	$	—		$	—