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v3.19.1

Revenues (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | $ 577,390 | $ 575,465
Total revenues | 661,615 | 645,874
Services/goods transferred at a point in time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 11,233 | 11,497
Services/goods transferred over time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 566,157 | 563,968
Electric energy sales - residential |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 175,745 | 178,589
Electric energy sales - commercial |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 187,408 | 188,998
Electric energy sales - large light and power |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 198,926 | 192,321
Electric energy sales - other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 4,078 | 4,060
Bank fees |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 11,233 | 11,497
Revenues from Other Sources |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 84,225 | 70,409
Regulatory revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 6,207 | 4,750
Bank interest and dividend income |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 68,488 | 62,002
Other bank noninterest income |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 3,331 | 1,920
Other |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 6,199 | 1,737
Electric utility |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 566,157 | 563,968
Total revenues | 578,495 | 570,427
Electric utility | Services/goods transferred at a point in time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Electric utility | Services/goods transferred over time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 566,157 | 563,968
Electric utility | Electric energy sales - residential |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 175,745 | 178,589
Electric utility | Electric energy sales - commercial |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 187,408 | 188,998
Electric utility | Electric energy sales - large light and power |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 198,926 | 192,321
Electric utility | Electric energy sales - other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 4,078 | 4,060
Electric utility | Bank fees |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Electric utility | Revenues from Other Sources |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 12,338 | 6,459
Electric utility | Regulatory revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 6,207 | 4,750
Electric utility | Bank interest and dividend income |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 0 | 0
Electric utility | Other bank noninterest income |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 0 | 0
Electric utility | Other |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 6,131 | 1,709
Bank |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 11,233 | 11,497
Total revenues | 83,052 | 75,419
Bank | Services/goods transferred at a point in time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 11,233 | 11,497
Bank | Services/goods transferred over time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Bank | Electric energy sales - residential |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Bank | Electric energy sales - commercial |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Bank | Electric energy sales - large light and power |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Bank | Electric energy sales - other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Bank | Bank fees |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 11,233 | 11,497
Bank | Revenues from Other Sources |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 71,819 | 63,922
Bank | Regulatory revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 0 | 0
Bank | Bank interest and dividend income |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 68,488 | 62,002
Bank | Other bank noninterest income |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 3,331 | 1,920
Bank | Other |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 0 | 0
Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Total revenues | 68 | 28
Other | Services/goods transferred at a point in time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Other | Services/goods transferred over time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Other | Electric energy sales - residential |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Other | Electric energy sales - commercial |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Other | Electric energy sales - large light and power |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Other | Electric energy sales - other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Other | Bank fees |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Other | Revenues from Other Sources |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 68 | 28
Other | Regulatory revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 0 | 0
Other | Bank interest and dividend income |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 0 | 0
Other | Other bank noninterest income |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | 0 | 0
Other | Other |  |
Disaggregation of Revenue [Line Items] |  |
Total revenues | $ 68 | $ 28

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