Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Measurements [Abstract]

Summary of financial assets and liabilities at fair value

	Fair Value Measurements Using
(in thousands)	Level 1		Level 2		Level 3		Total
September 30, 2018
Liabilities
Commodity derivatives	$	-	$	10,801	$	-	$	10,801
December 31, 2017
Asset:
Commodity derivatives	$	-	$	225	$	-	$	225
Liabilities
Warrant derivative liability	$	-	$	-	$	2,017	$	2,017

Summary of changes in fair value of financial instruments

(in thousands)	Total
Balance, December 31, 2017	$	2,017
Warrant derivative gain for the period January 1- January 31, 2018		(225	)
CCC Warrant Exercise - liability extinguishment		(1,792	)
Balance, September 30, 2018	$	-