Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2019

Commitments and Contingencies

Schedule of future minimum volume purchase requirements (in thousands)

2020	418,738
2021	351,900
2022	231,300
2023	187,200
2024	177,400
Thereafter	142,100
Total	1,508,638

Schedule of total future minimum payments under the agreement with non-cancellable terms of one year or more (in thousands)

2020	$	9,000
2021		9,000
2022		9,000
2023		9,000
2024		9,000
Thereafter		4,500
Total	$	49,500