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Shareholders' equity | 6 Months Ended
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Jun. 30, 2018
Equity [Abstract] |
Shareholders' equity | Shareholders’ equity Accumulated other comprehensive income/(loss). Changes in the balances of each component of accumulated other comprehensive income/(loss) (AOCI) were as follows:
| HEI Consolidated |  | Hawaiian Electric Consolidated
(in thousands) | Net unrealized gains (losses) on securities |  | Unrealized gains (losses) on derivatives |  | Retirement benefit plans |  | AOCI |  | Unrealized gains (losses) on derivatives |  | Retirement benefit plans |  | AOCI
Balance, December 31, 2017 | $ | (14,951 | ) |  | $ | — |  |  | $ | (26,990 | ) |  | $ | (41,941 | ) |  | $ | — |  |  | $ | (1,219 | ) |  | $ | (1,219 | )
Current period other comprehensive income (loss) | (17,645 | ) |  | — |  |  | 1,047 |  |  | (16,598 | ) |  | — |  |  | 57 |  |  | 57 |
Balance, June 30, 2018 | $ | (32,596 | ) |  | $ | — |  |  | $ | (25,943 | ) |  | $ | (58,539 | ) |  | $ | — |  |  | $ | (1,162 | ) |  | $ | (1,162 | )
Balance, December 31, 2016 | $ | (7,931 | ) |  | $ | (454 | ) |  | $ | (24,744 | ) |  | $ | (33,129 | ) |  | $ | (454 | ) |  | $ | 132 |  |  | $ | (322 | )
Current period other comprehensive income | 2,244 |  |  | 454 |  |  | 657 |  |  | 3,355 |  |  | 454 |  |  | 45 |  |  | 499 |
Balance, June 30, 2017 | $ | (5,687 | ) |  | $ | — |  |  | $ | (24,087 | ) |  | $ | (29,774 | ) |  | $ | — |  |  | $ | 177 |  |  | $ | 177 |
Reclassifications out of AOCI were as follows:
|  | Amount reclassified from AOCI |  |
|  | Three months ended June 30 |  | Six months ended June 30 |  | Affected line item in the
(in thousands) |  | 2018 |  | 2017 |  | 2018 |  | 2017 |  | Statements of Income / Balance Sheets
HEI consolidated |  |  |  |  |  |  |  |  |  |
Derivatives qualifying as cash flow hedges: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Window forward contracts |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 454 |  |  | Property, plant and equipment-electric utilities
Retirement benefit plans: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost |  | 5,350 |  |  | 3,930 |  |  | 10,496 |  |  | 7,851 |  |  | See Note 8 for additional details
Impact of D&Os of the PUC included in regulatory assets |  | (4,827 | ) |  | (3,581 | ) |  | (9,449 | ) |  | (7,194 | ) |  | See Note 8 for additional details
Total reclassifications |  | $ | 523 |  |  | $ | 349 |  |  | $ | 1,047 |  |  | $ | 1,111 |  |  |
Hawaiian Electric consolidated |  |  |  |  |  |  |  |  |  |
Derivatives qualifying as cash flow hedges: |  |  |  |  |  |  |  |  |  |
Window forward contracts |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 454 |  |  | Property, plant and equipment
Retirement benefit plans: |  |  |  |  |  |  |  |  |  |  |  |
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost |  | 4,853 |  |  | 3,621 |  |  | 9,506 |  |  | 7,239 |  |  | See Note 8 for additional details
Impact of D&Os of the PUC included in regulatory assets |  | (4,827 | ) |  | (3,581 | ) |  | (9,449 | ) |  | (7,194 | ) |  | See Note 8 for additional details
Total reclassifications |  | $ | 26 |  |  | $ | 40 |  |  | $ | 57 |  |  | $ | 499 |  |  |

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- References No definition available. + Details
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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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