Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Schedule of financial assets and liabilities at fair value

(in thousands)	Fair Value Measurements Using
	Level 1		Level 2		Level 3		Total
June 30, 2019
Assets:
Commodity derivatives	$	-	$	6,728	$	-	$	6,728
Liabilities:
Commodity derivatives	$	-	$	102	$	-	$	102
December 31, 2018
Asset:
Commodity derivatives	$	-	$	7,022	$	-	$	7,022