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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Income Statement [Abstract] |  |  |
Operating revenue | $ 800,590 | $ 748,439 | $ 670,363
Production Expenses: |  |  |
Purchased water | 126,343 | 158,568 | 135,982
Power | 21,769 | 11,457 | 9,602
Groundwater extraction charges | 112,076 | 73,146 | 62,980
Other production expenses | 50,973 | 48,851 | 47,636
Total production expenses | 311,161 | 292,022 | 256,200
Administrative and general | 125,998 | 105,830 | 98,656
Maintenance | 32,895 | 31,301 | 25,729
Property taxes and other non-income taxes | 37,686 | 35,928 | 34,475
Depreciation and amortization | 115,323 | 112,855 | 105,868
Total operating expense | 623,063 | 577,936 | 520,928
Operating income | 177,527 | 170,503 | 149,435
Other (expense) income: |  |  |
Interest on long-term debt and other interest expense | (72,575) | (71,390) | (66,144)
Pension non-service credit (cost) | 6,436 | 3,769 | (1,230)
Other, net | 3,545 | 55 | 8,882
Income before income taxes | 114,933 | 102,937 | 90,943
Provision for income taxes | 12,355 | 8,970 | 5,956
Net income | 102,578 | 93,967 | 84,987
Other comprehensive income: |  |  |
Unrealized (loss) gain on investment, net of taxes of $0 in 2025, $(163) in 2024 and $166 in 2023 | 0 | (442) | 530
Adjustment to pension benefit plans, net of taxes of $0 in 2025, $0 in 2024 and $80 in 2023 | (493) | 611 | (216)
Comprehensive income | $ 102,085 | $ 94,136 | $ 85,301
Earnings per share |  |  |
—Basic (in dollars per share) | $ 2.93 | $ 2.87 | $ 2.69
—Diluted (in dollars per share) | $ 2.92 | $ 2.87 | $ 2.68
Weighted average shares outstanding |  |  |
—Basic (shares) | 35,002,252 | 32,701,292 | 31,575,197
—Diluted (shares) | 35,102,487 | 32,779,573 | 31,663,274

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