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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2018
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 September 30, 2018
 
Level 1
 
Level 2
 
Level 3
 
Total
 
(In thousands)
Assets:
 
 
 
 
 
 
 
Money market funds
$
143

 
$

 
$

 
$
143

Total assets
$
143

 
$

 
$

 
$
143

Liabilities:
 
 
 
 
 
 
 
Commodity derivative instruments (see Note 7)
$

 
$
213,146

 
$

 
$
213,146

Total liabilities
$

 
$
213,146

 
$

 
$
213,146

 
Fair value at December 31, 2017
 
Level 1
 
Level 2
 
Level 3
 
Total
 
(In thousands)
Assets:
 
 
 
 
 
 
 
Money market funds
$
142

 
$

 
$

 
$
142

Commodity derivative instruments (see Note 7)

 
353

 

 
353

Total assets
$
142

 
$
353

 
$

 
$
495

Liabilities:
 
 
 
 
 
 
 
Commodity derivative instruments (see Note 7)
$

 
$
135,567

 
$

 
$
135,567

Total liabilities
$

 
$
135,567

 
$

 
$
135,567