Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Tables)

v3.19.3.a.u2
Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases
Aggregate future minimum payments under these agreements at  December 31, 2019 are as follows (in thousands):
Year ended December 31:
Capital Spend Commitments
 
Minimum Purchase Commitments(a)
2020
$
4,865

 
$
24,416

2021

 
697

2022

 
124

2023

 
8

2024

 

Thereafter

 

 
$
4,865

 
$
25,245


a.
Included in these amounts are sand purchase commitments of $19.5 million. Pricing for certain sand purchase agreements is variable and, therefore, the total sand purchase commitments could be as much as $23.1 million. The minimum amount due in the form of shortfall fees under certain sand purchase agreements was $1.8 million as of December 31, 2019.
Schedule Of Letters Of Credit
The letters of credit are categorized below (in thousands):
 
 
December 31,
 
 
2019
 
2018
Environmental remediation
 
$
4,182

 
$
3,877

Insurance programs
 
4,105

 
4,105

Rail car commitments
 
455

 
455

Total letters of credit
 
$
8,742

 
$
8,437