v3.23.2
Note 15 - Segment of Business - Summary of Reportable Segments Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Revenue $ 161,194 $ 65,929 $ 349,528 $ 124,836  
Operating Expense 22,244 (816) 51,477 (9,493)  
Depreciation 17,169 11,164 35,145 20,695  
Amount attributable to assets acquired 599,889 375,735 599,889 375,735 $ 630,554
Capital Expenditures 17,128 13,821 30,610 22,903  
Coal Operations [Member]          
Revenue 113,098 65,323 208,371 123,660  
Operating Expense 26,363 1,928 39,451 (5,518)  
Depreciation 12,466 11,127 25,741 20,623  
Amount attributable to assets acquired 387,653 367,723 387,653 367,723  
Capital Expenditures 14,445 13,821 27,084 22,903  
Electric Operations [Member]          
Revenue 71,103 0 163,597 0  
Operating Expense 9,256 0 27,961 0  
Depreciation 4,675 0 9,350 0  
Amount attributable to assets acquired 216,665 0 216,665 0  
Capital Expenditures 2,683 0 3,526 0  
Corporate and Other [Member]          
Revenue (23,007) 606 (22,440) 1,176  
Operating Expense (13,375) (2,744) (15,935) (3,975)  
Depreciation 28 37 54 72  
Amount attributable to assets acquired (4,429) 8,012 (4,429) 8,012  
Capital Expenditures $ 0 $ 0 $ 0 $ 0