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Fair Value Measurements (Tables)
 9 Months Ended
Sep. 30, 2022
Fair Value Disclosures [Abstract]  
Fair value hierarchy of financial assets and liabilities
The following table sets forth, by level within the fair value hierarchy, our financial assets and liabilities that were accounted for at fair value on a recurring basis as of the periods indicated:
 Fair Value Measurements Using:
In thousandsQuoted Prices
in Active
Markets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Total
September 30, 2022 
Assets
Oil derivative contracts – current$— $26,782 $— $26,782 
Oil derivative contracts – long-term— 9,048 — 9,048 
Total Assets$— $35,830 $— $35,830 
Liabilities
Oil derivative contracts – current$— $(33,868)$— $(33,868)
Oil derivative contracts – long-term— — — — 
Total Liabilities$— $(33,868)$— $(33,868)
December 31, 2021    
Liabilities
Oil derivative contracts – current$— $(134,509)$— $(134,509)
Total Liabilities$— $(134,509)$— $(134,509)