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Prepaid and Other Current Assets
3 Months Ended
Mar. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Prepaid and Other Current Assets Prepaid and Other Current Assets
    Prepaid and other current assets at March 31, 2021 and December 31, 2020 consisted of the following (in thousands):
March 31, 2021December 31, 2020
Collateral posted with broker for derivative instruments (1)$2,376 $1,489 
Prepaid insurance10,039 14,932 
Derivative assets6,403 1,346 
Other6,095 6,881 
Total$24,913 $24,648 
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(1)Our cash margin that is required as collateral deposits on our commodity derivatives cannot be offset against the fair value of open contracts except in the event of default. Please read Note 10—Derivatives for further information.