Revenue (Tables)

6 Months Ended

Jun. 30, 2019

Revenue Recognition and Deferred Revenue [Abstract]

Schedule of disaggregation of revenue

	Appalachian and Illinois Basins				Ventura Basin				Total
	Three Months Ended June 30,				Three Months Ended June 30,				Three Months Ended June 30,
	2019		2018		2019		2018		2019		2018
Natural gas sales	$	13,879	$	3,114	$	337	$	409	$	14,216	$	3,523
Natural gas liquids sales		-		-		195		550		195		550
Oil sales		1,558		2,377		8,344		5,714		9,902		8,091
Transportation and handling		322		-		-		-		322		-
Marketing gas sales		3,221		-		-		-		3,221		-
Total	$	18,980	$	5,491	$	8,876	$	6,673	$	27,856	$	12,164

	Appalachian and Illinois Basins				Ventura Basin				Total
	Six Months Ended June 30,				Six Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018		2019		2018
Natural gas sales	$	32,671	$	6,919	$	861	$	543	$	33,532	$	7,462
Natural gas liquids sales		-		-		441		713		441		713
Oil sales		3,095		2,624		15,796		8,450		18,891		11,074
Transportation and handling		1,056		-		-		-		1,056		-
Marketing gas sales		8,165		-		-		-		8,165		-
Total	$	44,987	$	9,543	$	17,098	$	9,706	$	62,085	$	19,249