XML 48 R37.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Note 3 - Derivative Instruments - Gain or Losses of Derivative Instruments (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Fair value of natural gas derivatives, beginning of period     $ 0  
Purchases of natural gas derivatives $ 359 $ 0 359 $ 0
Change in unrealized gain (loss) on natural gas derivatives (1) [1] 82 224 334 55
Fair value of natural gas derivatives, end of period [1] 329   329  
Realized gain (loss) from natural gas derivatives, net (2) [2] (112) (294) (364) (546)
Call Option [Member]        
Fair value of natural gas derivatives, beginning of period 0 151 0 572
Unrealized losses transferred to realized losses, net (112) (294) (364) (546)
Fair value of natural gas derivatives, end of period 329 81 329 81
Derivative settlement payments received (2) [2] $ 0 $ 0 $ 0 $ 0
[1] Amounts are presented on a gross basis.
[2] The classification between current and noncurrent assets is based upon when the Call Options mature.