v3.26.1
STATEMENTS OF INCOME - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Regulated Operating Revenue $ 411,639 $ 423,741 $ 1,243,350 $ 1,358,931
Cost of natural gas 90,287 117,942 483,863 630,404
Operating expenses        
Operations and maintenance 139,628 130,987 286,575 266,282
Depreciation and amortization 76,240 79,314 153,025 161,018
General taxes 22,813 23,643 47,624 48,873
Total operating expenses 238,681 233,944 487,224 476,173
Operating income 82,671 71,855 272,263 252,354
Other Nonoperating Income (Expense) 5,220 2,572 3,123 3,090
Interest expense, net (31,101) (35,279) (63,459) (70,976)
Income before income taxes 56,790 39,148 211,927 184,468
Income taxes (9,982) (7,115) (36,446) (33,016)
Net income $ 46,808 $ 32,033 $ 175,481 $ 151,452
Earnings per share        
Basic $ 0.74 $ 0.53 $ 2.79 $ 2.52
Diluted $ 0.74 $ 0.53 $ 2.78 $ 2.51
Weighted Average Number of Shares Outstanding, Basic [Abstract]        
Basic 62,959 60,113 62,936 60,095
Weighted Average Number of Shares Outstanding, Diluted [Abstract]        
Diluted 63,153 60,455 63,178 60,361
Common Stock, Dividends, Per Share, Declared $ 0.68 $ 0.67 $ 1.36 $ 1.34