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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Minimum Volume Commitments
The estimable future commitments under these volume commitment agreements as of December 31, 2019 are as follows:
 (In thousands)
2020$82,515  
202195,074  
2022107,004  
202391,649  
202478,013  
Thereafter140,282  
$594,537