NOTE 15. FAIR VALUE OF FINANCIAL INSTRUMENTS

Recurring Measurements

We have elected the fair value option to account for our investment in Basin Production and Completion LLC ("BPC") due to the complexities of the terms of the equity investment. The significant unobservable inputs used in the fair value measurement, which was valued using the income approach and the market approach, are forecasted results and a weighted-average cost of capital. The fair value of this asset is classified as "Investments" in our unaudited condensed consolidated balance sheets. The gains and losses from fair value changes are classified as "Other (expense) income, net" in our unaudited condensed consolidated statements of operations.

The fair value of the earnout payment was estimated using a Black-Scholes model, adjusted for the capped amount of the earnout. The fair value was discounted using a company specific credit spread to account for the counterparty credit risk in making the payment. The significant unobservable inputs used in the fair value measurement are the risk-free rate, credit spread of the acquirer, discount rate, forecasted results and volatility.

The fair value of the Munger make-whole provision was estimated using a Black-Scholes model. The significant unobservable inputs used in the fair value measurement are the risk-free rate and volatility. In May 2023, the expiration date of the Munger make-whole provision was extended until May 17, 2024.

Nonrecurring Measurements

We have certain assets and liabilities that are not measured at fair value on an ongoing basis but were subjected to fair value adjustments at the time of acquisition. These include long-lived assets and liabilities acquired through our business combination activities, the fair values of which were determined using applicable valuation models based on significant unobservable inputs classified as level 3 in the fair value hierarchy. See Note 2 for additional information.

Financial Instruments

The estimated fair values of our financial instruments have been determined at discrete points in time based on relevant market information. Our financial instruments consist of cash and cash equivalents, restricted cash, accounts receivable, certain investments, accounts payable, accrued expenses and long-term debt. The carrying amounts of our financial instruments other than long-term debt approximate fair value because of the short-term nature of the items.