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Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2021
Valuation of our interest rate swaps and impaired assets  
Summary of assets and liabilities measured at fair value on recurring basis

(in thousands)

    

March 31, 2021

    

December 31, 2020

Derivative liability

$

5,076

$

6,337

Schedule of carrying value and estimated fair value of debt instruments

(in thousands)

    

March 31, 2021

    

December 31, 2020

Carrying amount of fixed rate debt (1)

$

1,295,738

$

1,295,867

Fair value of fixed rate debt

 

1,337,000

 

1,371,000

(1)Carrying amounts are shown net of unamortized debt premium and unamortized deferred financing costs. See Note 9 (“Long-Term Debt”).
Compressors  
Valuation of our interest rate swaps and impaired assets  
Schedule of non-recurring fair value assets

(in thousands)

    

March 31, 2021

    

December 31, 2020

Impaired compressors

$

3,318

$

19,046

Schedule of additional quantitative information related to our significant unobservable inputs

    

Range

    

Weighted Average (1)

Estimated net sale proceeds:

As of March 31, 2021

$0 - $289 per horsepower

$17 per horsepower

As of December 31, 2020

$0 - $289 per horsepower

$20 per horsepower

(1)Calculated based on an estimated discount for market liquidity of 79% and 81% as of March 31, 2021 and December 31, 2020, respectively.