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Condensed Consolidated Statements Of Equity - USD ($)
$ in Thousands
Common Stock [Member]
Capital In Excess Of Par Value [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Total
Balance at Dec. 31, 2022 $ 133,486 $ 3,793,262 $ 1,534,331 $ (83,693) $ 5,377,386
Net income     191,434   191,434
Dividends     (1)   (1)
Dividends declared     (75,876)   (75,876)
Issuance of common stock under dividend reinvestment plan 49 4,068     4,117
Issuance of common stock from at-the-market sale agreements 200 19,094     19,294
Repurchase of stock       (3,911) (3,911)
Equity compensation plan 111 (111)      
Exercise of stock options 2 101     103
Stock-based compensation   3,410 (267)   3,143
Other   (20)   273 253
Balance at Mar. 31, 2023 133,848 3,819,804 1,649,621 (87,331) 5,515,942
Balance at Dec. 31, 2022 133,486 3,793,262 1,534,331 (83,693) 5,377,386
Net income         362,778
Balance at Sep. 30, 2023 138,235 4,131,834 1,739,271 (86,783) 5,922,557
Balance at Dec. 31, 2022 133,486 3,793,262 1,534,331 (83,693) 5,377,386
Balance at Dec. 31, 2023 138,297 4,137,696 1,706,675 (86,485) 5,896,183
Balance at Mar. 31, 2023 133,848 3,819,804 1,649,621 (87,331) 5,515,942
Net income     91,268   91,268
Dividends     (1)   (1)
Issuance of common stock under dividend reinvestment plan 51 3,901     3,952
Repurchase of stock       (42) (42)
Equity compensation plan 9 (9)      
Exercise of stock options 1 105     106
Stock-based compensation   3,515 (206)   3,309
Other   (117)   281 164
Balance at Jun. 30, 2023 133,909 3,827,199 1,740,682 (87,092) 5,614,698
Net income     80,076   80,076
Dividends     (81,230)   (81,230)
Issuance of common stock under dividend reinvestment plan 56 3,936     3,992
Issuance of common stock from at-the-market sale agreements 4,270 299,419     303,689
Repurchase of stock       (2) (2)
Exercise of stock options   20     20
Stock-based compensation   1,967 (257)   1,710
Other   (707)   311 (396)
Balance at Sep. 30, 2023 138,235 4,131,834 1,739,271 (86,783) 5,922,557
Balance at Dec. 31, 2023 138,297 4,137,696 1,706,675 (86,485) 5,896,183
Net income     265,772   265,772
Dividends     (1)   (1)
Dividends declared     (83,998)   (83,998)
Issuance of common stock under dividend reinvestment plan 59 3,823     3,882
Repurchase of stock       (2,231) (2,231)
Equity compensation plan 80 (80)      
Exercise of stock options 2 173     175
Stock-based compensation   1,049 73   1,122
Other   (51)   274 223
Balance at Mar. 31, 2024 138,438 4,142,610 1,888,521 (88,442) 6,081,127
Balance at Dec. 31, 2023 138,297 4,137,696 1,706,675 (86,485) 5,896,183
Net income         410,559
Balance at Sep. 30, 2024 138,975 4,186,048 1,943,876 (87,965) 6,180,934
Balance at Mar. 31, 2024 138,438 4,142,610 1,888,521 (88,442) 6,081,127
Net income     75,385   75,385
Dividends     (1)   (1)
Issuance of common stock under dividend reinvestment plan 54 3,736     3,790
Repurchase of stock       (1) (1)
Equity compensation plan 12 (12)      
Exercise of stock options 4 244     248
Stock-based compensation   2,751 (189)   2,562
Other   (121)   245 124
Balance at Jun. 30, 2024 138,508 4,149,208 1,963,716 (88,198) 6,163,234
Net income     69,402   69,402
Dividends     (89,081)   (89,081)
Issuance of common stock under dividend reinvestment plan 53 3,878     3,931
Issuance of common stock from at-the-market sale agreements 412 31,671     32,083
Repurchase of stock       (2) (2)
Exercise of stock options 2 113     115
Stock-based compensation   1,525 (161)   1,364
Other   (347)   235 (112)
Balance at Sep. 30, 2024 $ 138,975 $ 4,186,048 $ 1,943,876 $ (87,965) $ 6,180,934