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Revenues (Tables)
9 Months Ended
Sep. 30, 2023
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregation of Revenue The following tables disaggregate revenues by major source, timing of revenue recognition, and segment:
Three months ended September 30, 2023Nine months ended September 30, 2023
(in thousands) Electric  utilityBankOtherTotalElectric  utilityBankOtherTotal
Revenues from contracts with customers
Electric energy sales - residential
$257,790 $— $— $257,790 $753,207 $— $— $753,207 
Electric energy sales - commercial
257,876 — — 257,876 762,454 — — 762,454 
Electric energy sales - large light and power
284,607 — — 284,607 855,396 — — 855,396 
Electric energy sales - other 4,688 — — 4,688 14,628 — — 14,628 
Bank fees— 12,067 — 12,067 — 36,370 — 36,370 
Other sales— — 5,016 5,016 — — 13,361 13,361 
Total revenues from contracts with customers804,961 12,067 5,016 822,044 2,385,685 36,370 13,361 2,435,416 
Revenues from other sources
Regulatory revenue(20,927)— — (20,927)3,716 — — 3,716 
Bank interest and dividend income
— 85,636 — 85,636 — 246,856 — 246,856 
Other bank noninterest income— 3,271 — 3,271 — 8,490 — 8,490 
Other10,953 — 896 11,849 30,138 — 1,179 31,317 
Total revenues from other sources(9,974)88,907 896 79,829 33,854 255,346 1,179 290,379 
Total revenues$794,987 $100,974 $5,912 $901,873 $2,419,539 $291,716 $14,540 $2,725,795 
Timing of revenue recognition
Services/goods transferred at a point in time
$— $12,067 $— $12,067 $— $36,370 $— $36,370 
Services/goods transferred over time
804,961 — 5,016 809,977 2,385,685 — 13,361 2,399,046 
Total revenues from contracts with customers$804,961 $12,067 $5,016 $822,044 $2,385,685 $36,370 $13,361 $2,435,416 
Three months ended September 30, 2022Nine months ended September 30, 2022
(in thousands) Electric  utilityBankOtherTotalElectric  utilityBankOtherTotal
Revenues from contracts with customers
Electric energy sales - residential
$306,417 $— $— $306,417 $790,424 $— $— $790,424 
Electric energy sales - commercial
309,940 — — 309,940 794,238 — — 794,238 
Electric energy sales - large light and power
351,763 — — 351,763 886,733 — — 886,733 
Electric energy sales - other5,400 — — 5,400 11,699 — — 11,699 
Bank fees— 12,058 — 12,058 — 36,851 — 36,851 
Other sales— — 4,760 4,760 — — 7,208 7,208 
Total revenues from contracts with customers973,520 12,058 4,760 990,338 2,483,094 36,851 7,208 2,527,153 
Revenues from other sources
Regulatory revenue(26,301)— — (26,301)(24,843)— — (24,843)
Bank interest and dividend income
— 68,417 — 68,417 — 191,228 — 191,228 
Other bank noninterest income— 936 — 936 — 3,771 — 3,771 
Other8,752 — 55 8,807 25,385 — 178 25,563 
Total revenues from other sources(17,549)69,353 55 51,859 542 194,999 178 195,719 
Total revenues$955,971 $81,411 $4,815 $1,042,197 $2,483,636 $231,850 $7,386 $2,722,872 
Timing of revenue recognition
Services/goods transferred at a point in time
$— $12,058 $— $12,058 $— $36,851 $— $36,851 
Services/goods transferred over time
973,520 — 4,760 978,280 2,483,094 — 7,208 2,490,302 
Total revenues from contracts with customers$973,520 $12,058 $4,760 $990,338 $2,483,094 $36,851 $7,208 $2,527,153