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Condensed Consolidated Statements of Changes in Shareholders' Equity (unaudited) - HECO - USD ($) $ in Thousands | Total | Hawaiian Electric Company, Inc. and Subsidiaries | Common stock | Common stock Hawaiian Electric Company, Inc. and Subsidiaries | Premium on capital stock Hawaiian Electric Company, Inc. and Subsidiaries | Retained earnings | Retained earnings Hawaiian Electric Company, Inc. and Subsidiaries | Accumulated other comprehensive income (loss) | Accumulated other comprehensive income (loss) Hawaiian Electric Company, Inc. and Subsidiaries
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2020 |  |  | 109,181,000 | 17,324,000 |  |  |  |  |
Beginning balance at Dec. 31, 2020 | $ 2,337,502 | $ 2,141,918 | $ 1,678,368 | $ 115,515 | $ 746,987 | $ 660,398 | $ 1,282,335 | $ (1,264) | $ (2,919)
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 64,358 | 43,358 |  |  |  | 64,358 | 43,358 |  |
Other comprehensive income (loss), net of tax benefits | (44,016) | 34 |  |  |  |  |  | (44,016) | 34
Common stock dividends | (37,156) | (27,925) |  |  |  | (37,156) | (27,925) |  |
Ending balance (in shares) at Mar. 31, 2021 |  |  | 109,281,000 | 17,324,000 |  |  |  |  |
Ending balance at Mar. 31, 2021 | 2,321,293 | 2,157,385 | $ 1,678,973 | $ 115,515 | 746,987 | 687,600 | 1,297,768 | (45,280) | (2,885)
Beginning balance (in shares) at Dec. 31, 2020 |  |  | 109,181,000 | 17,324,000 |  |  |  |  |
Beginning balance at Dec. 31, 2020 | 2,337,502 | 2,141,918 | $ 1,678,368 | $ 115,515 | 746,987 | 660,398 | 1,282,335 | (1,264) | (2,919)
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 128,230 | 85,259 |  |  |  |  |  |  |
Other comprehensive income (loss), net of tax benefits | (27,544) | 69 |  |  |  |  |  |  |
Common stock dividends |  | (55,850) |  |  |  |  |  |  |
Ending balance (in shares) at Jun. 30, 2021 |  |  | 109,311,000 | 17,324,000 |  |  |  |  |
Ending balance at Jun. 30, 2021 | 2,367,329 | 2,171,396 | $ 1,681,820 | $ 115,515 | 746,987 | 714,317 | 1,311,744 | (28,808) | (2,850)
Beginning balance (in shares) at Mar. 31, 2021 |  |  | 109,281,000 | 17,324,000 |  |  |  |  |
Beginning balance at Mar. 31, 2021 | 2,321,293 | 2,157,385 | $ 1,678,973 | $ 115,515 | 746,987 | 687,600 | 1,297,768 | (45,280) | (2,885)
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 63,872 | 41,901 |  |  |  | 63,872 | 41,901 |  |
Other comprehensive income (loss), net of tax benefits | 16,472 | 35 |  |  |  |  |  | 16,472 | 35
Common stock dividends | (37,155) | (27,925) |  |  |  | (37,155) | (27,925) |  |
Ending balance (in shares) at Jun. 30, 2021 |  |  | 109,311,000 | 17,324,000 |  |  |  |  |
Ending balance at Jun. 30, 2021 | $ 2,367,329 | 2,171,396 | $ 1,681,820 | $ 115,515 | 746,987 | 714,317 | 1,311,744 | (28,808) | (2,850)
Beginning balance (in shares) at Dec. 31, 2021 | 109,311,785 |  | 109,312,000 | 17,753,000 |  |  |  |  |
Beginning balance at Dec. 31, 2021 | $ 2,390,884 | 2,261,899 | $ 1,685,496 | $ 118,376 | 798,526 | 757,921 | 1,348,277 | (52,533) | (3,280)
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 69,167 | 46,409 |  |  |  | 69,167 | 46,409 |  |
Other comprehensive income (loss), net of tax benefits | (117,159) | 51 |  |  |  |  |  | (117,159) | 51
Common stock dividends | (38,301) | (31,475) |  |  |  | (38,301) | (31,475) |  |
Ending balance (in shares) at Mar. 31, 2022 |  |  | 109,431,000 | 17,753,000 |  |  |  |  |
Ending balance at Mar. 31, 2022 | $ 2,303,642 | 2,276,884 | $ 1,684,547 | $ 118,376 | 798,526 | 788,787 | 1,363,211 | (169,692) | (3,229)
Beginning balance (in shares) at Dec. 31, 2021 | 109,311,785 |  | 109,312,000 | 17,753,000 |  |  |  |  |
Beginning balance at Dec. 31, 2021 | $ 2,390,884 | 2,261,899 | $ 1,685,496 | $ 118,376 | 798,526 | 757,921 | 1,348,277 | (52,533) | (3,280)
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 121,708 | 90,544 |  |  |  |  |  |  |
Other comprehensive income (loss), net of tax benefits | $ (204,999) | 102 |  |  |  |  |  |  |
Common stock dividends |  | (62,950) |  |  |  |  |  |  |
Ending balance (in shares) at Jun. 30, 2022 | 109,466,829 |  | 109,467,000 | 17,753,000 |  |  |  |  |
Ending balance at Jun. 30, 2022 | $ 2,233,504 | 2,289,595 | $ 1,688,009 | $ 118,376 | 798,526 | 803,027 | 1,375,871 | (257,532) | (3,178)
Beginning balance (in shares) at Mar. 31, 2022 |  |  | 109,431,000 | 17,753,000 |  |  |  |  |
Beginning balance at Mar. 31, 2022 | 2,303,642 | 2,276,884 | $ 1,684,547 | $ 118,376 | 798,526 | 788,787 | 1,363,211 | (169,692) | (3,229)
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 52,541 | 44,135 |  |  |  | 52,541 | 44,135 |  |
Other comprehensive income (loss), net of tax benefits | (87,840) | 51 |  |  |  |  |  | (87,840) | 51
Common stock dividends | $ (38,301) | (31,475) |  |  |  | (38,301) | (31,475) |  |
Ending balance (in shares) at Jun. 30, 2022 | 109,466,829 |  | 109,467,000 | 17,753,000 |  |  |  |  |
Ending balance at Jun. 30, 2022 | $ 2,233,504 | $ 2,289,595 | $ 1,688,009 | $ 118,376 | $ 798,526 | $ 803,027 | $ 1,375,871 | $ (257,532) | $ (3,178)

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