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Revenue Recognition (Tables)
6 Months Ended
Jun. 30, 2021
Revenue from Contract with Customer [Abstract]  
Disaggregation of revenue The following table presents revenues from contracts with customers disaggregated by product:
Three Months Ended June 30,Six Months Ended June 30,
(In thousands)2021202020212020
Natural gas $411,718 $288,286 $884,577 $658,626 
Other 70 88 129 143 
$411,788 $288,374 $884,706 $658,769