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Fair Value Measurements
12 Months Ended
Dec. 31, 2019
Fair Value Disclosures [Abstract]  
Fair Value Measurements
23. Fair Value Measurements
 
The accounting standard for fair value measurements and disclosures establishes a fair value hierarchy that prioritizes the inputs of valuation techniques used to measure fair value into the following three categories:
 
Level 1 — Quoted unadjusted prices for identical instruments in active markets to which we have access at the date of measurement.

Level 2 — Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. Level 2 inputs are those in markets for which there are few transactions, the prices are not current, little public information exists or prices vary substantially over time or among brokered market makers.

Level 3 — Model-derived valuations in which one or more significant inputs or significant value drivers are unobservable. Unobservable inputs are those inputs that reflect our own assumptions regarding how market participants would price the asset or liability based on the best available information.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

On a quarterly basis, our interest rate swap derivative instruments are valued based on the income approach (discounted cash flow) using market observable inputs, including LIBOR forward curves. These fair value measurements are classified as Level 2. The following table presents our derivative asset and liability measured at fair value on a recurring basis, with pricing levels as of the date of valuation (in thousands):
 
December 31,
 
2019
 
2018
Derivative asset
$
12

 
$
7,307

Derivative liability
(1,768
)
 


 
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

During the years ended December 31, 2019 and 2018, we recorded non-recurring fair value measurements related to our idle and previously-culled compressors. Our estimate of the compressors’ fair value was primarily based on the expected net sale proceeds compared to other fleet units we recently sold and/or a review of other units recently offered for sale by third parties, or the estimated component value of the equipment we plan to use. We discounted the expected proceeds, net of selling and other carrying costs, using a weighted average disposal period of four years. These fair value measurements are classified as Level 3. The fair value of our impaired compressors was $5.9 million and $2.3 million at December 31, 2019 and 2018, respectively. See Note 17 (“Long-Lived Asset Impairment”) for further details.

Other Financial Instruments

The carrying amounts of our cash, receivables and payables approximate fair value due to the short-term nature of those instruments.

The carrying amount of borrowings outstanding under our Credit Facility approximates fair value due to its variable interest rate. The fair value of these outstanding borrowings was estimated using a discounted cash flow analysis based on interest rates offered on loans with similar terms to borrowers of similar credit quality, which are Level 3 inputs.

The fair value of our fixed rate debt was estimated based on quoted prices in inactive markets and is considered a Level 2 measurement. The following table presents the carrying amount and fair value of our fixed rate debt (in thousands):

 
December 31,
 
2019
 
2018
Carrying amount of fixed rate debt (1)
$
1,329,549

 
$
690,001

Fair value of fixed rate debt
1,400,000

 
674,000

——————
(1) 
Carrying amounts are shown net of unamortized debt discounts and unamortized deferred financing costs. See Note 13 (“Long-Term Debt”).