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v3.22.4

OTHER INCOME AND EXPENSES (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Other income and expenses |  |  |
Revenue from contracts with customers | $ 772,616 | $ 765,704 | $ 697,577
Loss (gain) from non-qualified benefit plan investments | 7,161 | (3,800) | (4,293)
Nonoperating expense | 24,821 | 17,234 | 14,300
Revenue | 21,276 | 22,761 | 16,922
Expense | 24,821 | 17,234 | 14,300
Operating and maintenance revenue |  |  |
Other income and expenses |  |  |
Revenue from contracts with customers | 12,860 | 16,276 | 11,481
Expense from contract with customer | 11,959 | 16,344 | 13,551
Leases |  |  |
Other income and expenses |  |  |
Lease revenue | 2,642 | 2,744 | 2,398
Lease expense | 46 | 230 | 48
Design and construction |  |  |
Other income and expenses |  |  |
Revenue from contracts with customers | 416 | 619 | 802
Expense from contract with customer | 328 | 611 | 704
Meter reading and billing |  |  |
Other income and expenses |  |  |
Revenue from contracts with customers | 534 | 495 | 458
Expense from contract with customer | 123 | 79 | 109
Interest income |  |  |
Other income and expenses |  |  |
Interest income | 177 | 171 | 52
Other non-regulated income and expenses |  |  |
Other income and expenses |  |  |
Nonoperating income | 4,647 | 2,456 | 1,731
Nonoperating expense | $ 5,204 | $ 3,770 | $ 4,181

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