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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2020
Fair Value Disclosures [Abstract]  
Hierarchy of Fair Value, Assets and Liabilities Measured on Recurring Basis The following tables set forth by level, within the fair value hierarchy, the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis:
Fair value at June 30, 2020
Level 1Level 2Level 3Total
(In thousands)
Assets:
Money market funds$35,014  $—  $—  $35,014  
Commodity derivative instruments (see Note 7)
—  85,425  —  85,425  
Total assets$35,014  $85,425  $—  $120,439  

 Fair value at December 31, 2019
 Level 1Level 2Level 3Total
 (In thousands)
Assets:
Money market funds$146  $—  $—  $146  
Commodity derivative instruments (see Note 7)
—  1,174  —  1,174  
Total assets$146  $1,174  $—  $1,320  
Liabilities:
Commodity derivative instruments (see Note 7)
$—  $19,815  $—  $19,815  
Total liabilities$—  $19,815  $—  $19,815