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FAIR VALUE MEASUREMENTS
12 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]  
FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS
The Company’s financial assets and liabilities measured at fair value on a recurring basis consist of: cash and cash equivalents; revenue receivables; accounts receivable from/payable to Apache and an embedded derivative liability related to the issuance of Preferred Units (as further described above). This embedded derivative liability is recorded on the Company’s consolidated balance sheet at fair value. The carrying amounts reported on the consolidated balance sheet for the Company’s remaining financial assets and liabilities approximate fair value due to their short-term nature. The carrying amount of Altus Midstream’s revolving credit facility approximates fair value because the interest rate is variable and reflective of market rates. There were no transfers between Level 1, Level 2 or Level 3 of the fair value hierarchy during the years ended December 31, 2020 or December 31, 2019.
The Company bifurcated and recognized the embedded derivative associated with the Preferred Units related to the exchange option provided to the Preferred Unit holders under the terms of the Amended LPA. The valuation of the embedded derivative (using an income approach) was based on a range of factors including expected future interest rates using the Black-Karasinski model, the Company’s imputed interest rate, interest rate volatility, the expected timing of periodic cash distributions, the estimated timing for the potential exercise of the exchange option, and anticipated dividend yields of the Preferred Units. The Company recorded an unrealized loss of $36.1 million, $8.5 million and nil for the years ended December 31, 2020, 2019 and 2018, respectively, which are recorded in “Unrealized derivative instrument loss” in the consolidated statement of operations. Altus has classified these recurring fair value measurements as Level 3 in the fair value hierarchy.
As of the December 31, 2020 valuation date, the Company used the forward B-rated Energy Bond Yield curve to develop the following key unobservable inputs used to value this embedded derivative:

Quantitative Information About Level 3 Fair Value Measurements
Fair Value at December 31, 2020Valuation TechniqueSignificant Unobservable InputsRange/Value
(In thousands)
Preferred Units Embedded Derivative$139,009 Option ModelAltus Midstream Company’s Imputed Interest Rate
7.32-11.73%
Interest Rate Volatility37.08%
A one percent increase in the imputed interest rate assumption would significantly increase the value of the embedded derivative liability at December 31, 2020, while a one percent decrease would lead to a similar decrease in value as of December 31, 2020. The assumed expected timing until exercise of the exchange option at December 31, 2020 was 5.45 years.
The Company has additional embedded derivatives in the Preferred Units related to the exchange option and redemption features that are accounted for separately from the Preferred Units. Level 3 valuations of the embedded derivatives are based on a range of factors including the likelihood of the event occurring, and these factors are assessed quarterly. There was no value associated with these additional identified embedded derivatives for any applicable period presented.