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Segment financial information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Segment financial information |  |  |  |  |
Total revenues | $ 685,277 | $ 632,281 | $ 1,331,151 | $ 1,223,843 |
Income (loss) before income taxes | 59,582 | 59,626 | 112,858 | 111,208 |
Income taxes (benefit) | 13,055 | 20,492 | 25,611 | 37,408 |
Net income | 46,527 | 39,134 | 87,247 | 73,800 |
Preferred stock dividends of subsidiaries | 473 | 473 | 946 | 946 |
Net income for common stock | 46,054 | 38,661 | 86,301 | 72,854 |
Total assets | 12,884,104 |  | 12,884,104 |  | $ 12,534,160
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | 608,126 | 556,875 | 1,178,553 | 1,075,486 |
Income (loss) before income taxes | 40,344 | 41,003 | 77,493 | 75,725 |
Income taxes (benefit) | 8,676 | 14,860 | 17,851 | 27,618 |
Net income | 31,668 | 26,143 | 59,642 | 48,107 |
Preferred stock dividends of subsidiaries | 229 | 229 | 458 | 458 |
Net income for common stock | 31,169 | 25,644 | 58,644 | 47,109 |
Total assets | 5,803,714 |  | 5,803,714 |  | 5,630,613
American Savings Bank (ASB) |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | 77,104 | 75,329 | 152,523 | 148,185 |
Income (loss) before income taxes | 26,514 | 24,796 | 51,014 | 48,956 |
Income taxes (benefit) | 5,953 | 8,063 | 11,493 | 16,410 |
Net income | 20,561 | 16,733 | 39,521 | 32,546 |
Net income for common stock | 20,561 | 16,733 | 39,521 | 32,546 |
Total assets | 6,983,583 |  | 6,983,583 |  | 6,798,659
Revenues from external customers |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | 685,277 | 632,281 | 1,331,151 | 1,223,843 |
Intersegment revenues (eliminations) |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | 0 | 0 | 0 | 0 |
Electric utility |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | 608,126 | 556,875 | 1,178,553 | 1,075,486 |
Income (loss) before income taxes | 40,344 | 41,003 | 77,493 | 75,725 |
Income taxes (benefit) | 8,676 | 14,860 | 17,851 | 27,618 |
Net income | 31,668 | 26,143 | 59,642 | 48,107 |
Preferred stock dividends of subsidiaries | 499 | 499 | 998 | 998 |
Net income for common stock | 31,169 | 25,644 | 58,644 | 47,109 |
Total assets | 5,803,714 |  | 5,803,714 |  | 5,630,613
Electric utility | Revenues from external customers |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | 608,112 | 556,836 | 1,178,526 | 1,075,402 |
Electric utility | Intersegment revenues (eliminations) |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | 14 | 39 | 27 | 84 |
Bank |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | 77,104 | 75,329 | 152,523 | 148,185 |
Income (loss) before income taxes | 26,514 | 24,796 | 51,014 | 48,956 |
Income taxes (benefit) | 5,953 | 8,063 | 11,493 | 16,410 |
Net income | 20,561 | 16,733 | 39,521 | 32,546 |
Preferred stock dividends of subsidiaries | 0 | 0 | 0 | 0 |
Net income for common stock | 20,561 | 16,733 | 39,521 | 32,546 |
Total assets | 6,983,583 |  | 6,983,583 |  | 6,798,659
Bank | Revenues from external customers |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | 77,104 | 75,329 | 152,523 | 148,185 |
Bank | Intersegment revenues (eliminations) |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | 0 | 0 | 0 | 0 |
Other |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | 47 | 77 | 75 | 172 |
Income (loss) before income taxes | (7,276) | (6,173) | (15,649) | (13,473) |
Income taxes (benefit) | (1,574) | (2,431) | (3,733) | (6,620) |
Net income | (5,702) | (3,742) | (11,916) | (6,853) |
Preferred stock dividends of subsidiaries | (26) | (26) | (52) | (52) |
Net income for common stock | (5,676) | (3,716) | (11,864) | (6,801) |
Total assets | 96,807 |  | 96,807 |  | $ 104,888
Other | Revenues from external customers |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | 61 | 116 | 102 | 256 |
Other | Intersegment revenues (eliminations) |  |  |  |  |
Segment financial information |  |  |  |  |
Total revenues | $ (14) | $ (39) | $ (27) | $ (84) |

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