| Dec'19 | Dec'18 | Dec'17 | Dec'16 | |||
|---|---|---|---|---|---|---|
Operating revenues [Abstract] | ||||||
Operating revenues | ||||||
746,372 | 706,143 | 755,038 | 668,173 | |||
Operating expenses: | ||||||
Cost of gas | ||||||
254,911 | 255,519 | 324,795 | 260,588 | |||
Operations and maintenance | ||||||
178,191 | 156,698 | 152,358 | 136,723 | |||
Environmental Remediation Expense | ||||||
12,337 | 11,127 | 15,291 | 13,298 | |||
General taxes | ||||||
32,388 | 32,172 | 30,639 | 29,243 | |||
Revenue taxes | ||||||
30,325 | 30,082 | 0 | 0 | |||
Depreciation and amortization | ||||||
91,496 | 85,156 | 81,053 | 77,604 | |||
Other operating expenses | ||||||
3,250 | 3,227 | 0 | 0 | |||
Total operating expenses | ||||||
602,898 | 573,981 | 604,136 | 517,456 | |||
Income from operations | ||||||
143,474 | 132,162 | 150,902 | 150,717 | |||
Other income (expense), net | ||||||
-22,836 | -3,601 | -295 | -7,151 | |||
Interest expense, net | ||||||
-42,685 | -37,059 | -37,526 | -38,136 | |||
Income before income taxes | ||||||
77,953 | 91,502 | 113,081 | 105,430 | |||
Income tax expense | ||||||
12,642 | 24,191 | 41,008 | 43,011 | |||
Net income from continuing operations | ||||||
65,311 | 67,311 | 72,073 | 62,419 | |||
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent | ||||||
-3,576 | -2,742 | -127,696 | -3,524 | |||
Net Income (Loss) Attributable to Parent | ||||||
61,735 | 64,569 | -55,623 | 58,895 | |||
Other comprehensive income: | ||||||
Change in employee benefit plan liability, net of taxes of $956 for 2019, ($166) for 2018, and $735 for 2017 | ||||||
-2,655 | 476 | -2,059 | -744 | |||
Amortization of non-qualified employee benefit plan liability, net of taxes | ||||||
476 | 774 | 572 | 955 | |||
Comprehensive income | ||||||
59,556 | 65,819 | -57,110 | 59,106 | |||
Average common shares outstanding: | ||||||
Basic (in shares) | ||||||
29,786 | 28,803 | 28,669 | 27,647 | |||
Diluted (in shares) | ||||||
29,859 | 28,873 | 28,753 | 27,779 | |||
Earnings from continuing operations per share of common stock: | ||||||
Basic (in dollars per share) | ||||||
2.19 | 2.34 | 2.51 | 2.26 | |||
Diluted (in dollars per share) | ||||||
2.19 | 2.33 | 2.51 | 2.25 | |||
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic and Diluted Share [Abstract] | ||||||
Basic (in dollars per share) | ||||||
-0.12 | -0.10 | -4.45 | -0.13 | |||
Diluted (in dollars per share) | ||||||
-0.12 | -0.09 | -4.44 | -0.13 | |||
Earnings Per Share [Abstract] | ||||||
Basic (in dollars per share) | ||||||
2.07 | 2.24 | -1.94 | 2.13 | |||
Diluted (in dollars per share) | ||||||
2.07 | 2.24 | -1.93 | 2.12 | |||
Northwest Natural Gas Company [Member] | ||||||
Operating revenues | ||||||
739,944 | 705,571 | 755,038 | 667,949 | |||
Cost of gas | ||||||
255,135 | 255,743 | 325,019 | 260,588 | |||
Operations and maintenance | ||||||
169,091 | 155,225 | 152,180 | 135,979 | |||
Environmental Remediation Expense | ||||||
12,337 | 11,127 | 15,291 | 13,298 | |||
General taxes | ||||||
32,075 | 32,086 | 30,602 | 29,222 | |||
Revenue taxes | ||||||
30,325 | 30,082 | 0 | 0 | |||
Depreciation and amortization | ||||||
90,405 | 84,986 | 81,024 | 77,575 | |||
Other operating expenses | ||||||
3,230 | 3,223 | 0 | 0 | |||
Total operating expenses | ||||||
592,598 | 572,472 | 604,116 | 516,662 | |||
Income from operations | ||||||
147,346 | 133,099 | 150,922 | 151,287 | |||
Other income (expense), net | ||||||
-22,968 | -3,599 | -198 | -7,041 | |||
Interest expense, net | ||||||
-41,339 | -36,992 | -37,526 | -38,136 | |||
Income before income taxes | ||||||
83,039 | 92,508 | 113,198 | 106,110 | |||
Income tax expense | ||||||
14,065 | 24,459 | 41,478 | 43,275 | |||
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent | ||||||
68,974 | 68,049 | 71,720 | 62,835 | |||
Loss from discontinued operations, net of tax | ||||||
0 | -1,723 | -127,343 | -3,940 | |||
Net Income (Loss) Attributable to Parent | ||||||
68,974 | 66,326 | -55,623 | 58,895 | |||
Change in employee benefit plan liability, net of taxes of $956 for 2019, ($166) for 2018, and $735 for 2017 | ||||||
-2,655 | 476 | -2,059 | -744 | |||
Amortization of non-qualified employee benefit plan liability, net of taxes | ||||||
476 | 774 | 572 | 955 | |||
Comprehensive income | ||||||
66,795 | 67,576 | -57,110 | 59,106 | |||