Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table summarizes our revenues by product type for the three and six months ended June 30, 2019 and 2018:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
In thousands	2019		2018		2019		2018
Oil sales	$	328,571	$	373,286	$	620,536	$	710,692
Natural gas sales	1,850		2,279		4,462		4,894
CO2 sales and transportation fees	7,986		6,715		16,556		14,267
Purchased oil sales	2,591		346		2,806		1,403
Total revenues	$	340,998	$	382,626	$	644,360	$	731,256