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Electric utility segment - Condensed consolidating statement of changes in common stock equity (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Increase (decrease) in stockholders' equity |  |
Beginning Balance | $ 2,280,260 | $ 2,162,280
Net income for common stock | 33,420 | 45,688
Other comprehensive income, net of taxes | 18,212 | 9,241
Common stock dividends | (36,019) | (34,860)
Ending Balance | 2,276,505 | 2,183,515
Consolidating adjustments |  |
Increase (decrease) in stockholders' equity |  |
Beginning Balance | (591,969) | (576,838)
Net income for common stock | (8,804) | (11,849)
Other comprehensive income, net of taxes | (1) | (1)
Common stock dividends | 7,676 | 6,312
Common stock issuance expenses | 1 | 2
Ending Balance | (593,097) | (582,374)
Hawaiian Electric (parent only) | Reportable Legal Entities |  |
Increase (decrease) in stockholders' equity |  |
Beginning Balance | 2,047,352 | 1,957,641
Net income for common stock | 23,905 | 32,126
Other comprehensive income, net of taxes | 26 | 24
Common stock dividends | (26,784) | (25,313)
Common stock issuance expenses | 0 | 0
Ending Balance | 2,044,499 | 1,964,478
HELCO | Reportable Legal Entities |  |
Increase (decrease) in stockholders' equity |  |
Beginning Balance | 298,998 | 295,874
Net income for common stock | 6,067 | 5,169
Other comprehensive income, net of taxes | 1 | 1
Common stock dividends | (4,080) | (2,545)
Common stock issuance expenses | 0 | (2)
Ending Balance | 300,986 | 298,497
Maui Electric | Reportable Legal Entities |  |
Increase (decrease) in stockholders' equity |  |
Beginning Balance | 292,870 | 280,863
Net income for common stock | 2,737 | 6,680
Other comprehensive income, net of taxes | 0 | 0
Common stock dividends | (3,596) | (3,767)
Common stock issuance expenses | (1) | 0
Ending Balance | 292,010 | 283,776
Other subsidiaries | Reportable Legal Entities |  |
Increase (decrease) in stockholders' equity |  |
Beginning Balance | 101 | 101
Net income for common stock | 0 | 0
Other comprehensive income, net of taxes | 0 | 0
Common stock dividends | 0 | 0
Common stock issuance expenses | 0 | 0
Ending Balance | 101 | 101
Hawaiian Electric Company, Inc. and Subsidiaries |  |
Increase (decrease) in stockholders' equity |  |
Beginning Balance | 2,047,352 | 1,957,641
Net income for common stock | 23,905 | 32,126
Other comprehensive income, net of taxes | 26 | 24
Common stock dividends | (26,784) | (25,313)
Common stock issuance expenses | 0 | 0
Ending Balance | $ 2,044,499 | $ 1,964,478

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