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v3.22.2

Condensed Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Income Statement [Abstract] |  |  |  |
Revenues | $ 474,195 | $ 372,572 | $ 1,297,765 | $ 1,006,004
Operating expenses: |  |  |  |
Fuel, purchased power and cost of natural gas sold | 188,171 | 108,474 | 625,097 | 401,621
Operations and maintenance | 132,968 | 123,245 | 269,100 | 252,924
Depreciation, depletion and amortization | 64,128 | 58,443 | 124,591 | 115,712
Taxes - property and production | 16,539 | 15,144 | 33,235 | 30,166
Total operating expenses | 401,806 | 305,306 | 1,052,023 | 800,423
Operating income | 72,389 | 67,266 | 245,742 | 205,581
Other income (expense): |  |  |  |
Interest expense incurred net of amounts capitalized (including amortization of debt issuance costs, premiums and discounts) | (39,053) | (38,669) | (77,874) | (76,494)
Interest income | 289 | 467 | 565 | 692
Other income (expense), net | 1,563 | (191) | 2,267 | 75
Total other income (expense) | (37,201) | (38,393) | (75,042) | (75,727)
Income before income taxes | 35,188 | 28,873 | 170,700 | 129,854
Income tax benefit (expense) | 658 | (586) | (13,830) | (1,080)
Net income | 35,846 | 28,287 | 156,870 | 128,774
Net income attributable to non-controlling interest | (2,431) | (3,126) | (5,929) | (7,297)
Net income available for common stock | $ 33,415 | $ 25,161 | $ 150,941 | $ 121,477
Earnings per share of common stock: |  |  |  |
Earnings per share, Basic (usd per share) | $ 0.52 | $ 0.40 | $ 2.33 | $ 1.94
Earnings per share, Diluted (usd per share) | $ 0.52 | $ 0.40 | $ 2.33 | $ 1.93
Weighted average common shares outstanding: |  |  |  |
Basic (in shares) | 64,721 | 62,867 | 64,643 | 62,751
Diluted (in shares) | 64,883 | 62,918 | 64,822 | 62,817

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that 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 https://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 10 -URI https://asc.fasb.org/extlink&oid=126958026&loc=d3e1448-109256 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration