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v3.22.0.1

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Statement [Abstract] |  |  |
Operating revenue | $ 790,909 | $ 794,307 | $ 714,557
Operations: |  |  |
Purchased water | 225,020 | 230,076 | 212,461
Purchased power | 37,112 | 34,006 | 31,362
Pump taxes | 15,342 | 12,647 | 11,518
Administrative and general | 126,686 | 117,058 | 108,617
Other operations | 86,392 | 95,859 | 90,061
Maintenance | 29,592 | 28,026 | 26,834
Depreciation and amortization | 108,715 | 98,505 | 89,220
Income taxes | 2,805 | 11,435 | 16,280
Property and other taxes | 32,475 | 30,029 | 28,792
Total operating expenses | 664,139 | 657,641 | 615,145
Net operating income | 126,770 | 136,666 | 99,412
Other income and expenses: |  |  |
Non-regulated revenue | 22,761 | 16,922 | 19,205
Non-regulated expenses | (17,234) | (14,300) | (13,869)
Other components of net periodic benefit credit (cost) | 9,903 | (4,988) | (5,733)
Allowance for equity funds used during construction | 3,186 | 4,976 | 6,685
Gain on sale of non-utility property | 94 | 0 | 28
Income tax expense on other income and expenses | (1,287) | (583) | (1,391)
Net other income | 17,423 | 2,027 | 4,925
Interest expense: |  |  |
Interest expense | 44,980 | 45,047 | 44,891
Allowance for borrowed funds used during construction | (1,766) | (3,185) | (3,670)
Net interest expense | 43,214 | 41,862 | 41,221
Net income | 100,979 | 96,831 | 63,116
Net loss attributable to noncontrolling interests | (146) | 0 | 0
Net income | $ 101,125 | $ 96,831 | $ 63,116
Earnings per share: |  |  |
Basic (in dollars per share) | $ 1.96 | $ 1.97 | $ 1.31
Diluted (in dollars per share) | $ 1.96 | $ 1.97 | $ 1.31
Weighted average number of common shares outstanding: |  |  |
Basic (in shares) | 51,633 | 49,274 | 48,168
Diluted (in shares) | 51,633 | 49,274 | 48,168

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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e1505-109256 + Details
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