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CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS
 12 Months Ended
Dec. 31, 2021
Risks and Uncertainties [Abstract]  
CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS
Our financial instruments that potentially subject us to concentrations of credit risk primarily consist of trade receivables with a variety of oil and natural gas companies. Our credit risk is considered limited due to the many customers comprising our customer base and we do not generally require collateral related to our receivables.

Below is a table of the third-party customers that accounted for over 10% of each of our segments' revenues:

SuccessorPredecessor
Year Ended
December 31, 2021		Four Months Ended
December 31, 2020		Eight Months Ended
August 31, 2020
Oil and Natural Gas:
Coffeyville Resources11%**
CVR Refining, LP*14%15%
Plains Marketing L.P.**11%
Drilling:
EOG Resources, Inc.21%28%20%
Citizen Energy III, LLC20%16%*
Diamondback E&P, LLC15%**
Slawson Exploration Company, Inc.12%16%21%
Earthstone Operating, LLC11%**
Cimarex Energy Co.*12%*
QEP Resources, Inc.*23%10%
Mid-Stream:
ONEOK, Inc.37%28%31%
Range Resources Corporation11%15%21%
Koch Energy Services10%**
Centerpoint Energy Service, Inc.***
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*    Revenue accounted for less than 10% of the segment's revenues.

We also had a concentration of cash with one bank of $36.6 million and $21.4 million as of December 31, 2021 and 2020, respectively, as well as a concentration of cash equivalents of $27.0 million in a money market fund comprised of U.S. Government and U.S. Treasury securities as of December 31, 2021.

Using derivative instruments involves the risk that the counterparties cannot meet the financial terms of the transactions. We considered this non-performance risk regarding our counterparties and our own non-performance risk in our derivative valuation at December 31, 2021 and determined there was no material risk at that time. The fair value of the net liabilities we had with Bank of Oklahoma, our only commodity derivative counterparty, was $58.7 million of December 31, 2021.