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Shareholders' equity (Tables) | 12 Months Ended
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Dec. 31, 2014
Equity [Abstract] |
Schedule of accumulated other comprehensive income | 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 losses on derivatives |  | Retirement benefit plans |  | AOCI |  | AOCI -retirement benefit plans
Balance, December 31, 2011 | $ | 9,886 |  |  | $ | (996 | ) |  | $ | (28,027 | ) |  | $ | (19,137 | ) |  | $ | (32 | )
Current period other comprehensive income (loss) | 875 |  |  | 236 |  |  | (8,397 | ) |  | (7,286 | ) |  | (938 | )
Balance, December 31, 2012 | 10,761 |  |  | (760 | ) |  | (36,424 | ) |  | (26,423 | ) |  | (970 | )
Current period other comprehensive income (loss) | (14,424 | ) |  | 235 |  |  | 23,862 |  |  | 9,673 |  |  | 1,578 |
Balance, December 31, 2013 | (3,663 | ) |  | (525 | ) |  | (12,562 | ) |  | (16,750 | ) |  | 608 |
Current period other comprehensive income (loss) | 4,125 |  |  | 236 |  |  | (14,989 | ) |  | (10,628 | ) |  | (563 | )
Balance, December 31, 2014 | $ | 462 |  |  | $ | (289 | ) |  | $ | (27,551 | ) |  | $ | (27,378 | ) |  | $ | 45 |
Reclassification Out of Accumulated Other Comprehensive Income | Reclassifications out of AOCI were as follows:
|  | Amount reclassified from AOCI |  |
Years ended December 31 |  | 2014 |  | 2013 |  | 2012 |  | Affected line item in the Statement of Income
(in thousands) |  |  |  |  |  |  |  |
HEI consolidated |  |  |  |  |  |  |  |
Net realized gains on securities |  | $ | (1,715 | ) |  | $ | (738 | ) |  | $ | (81 | ) |  | Revenues-bank (net gains on sales of securities)
Derivatives qualified as cash flow hedges |  |  |  |  |  |  |  |  |  |
Interest rate contracts (settled in 2011) |  | 236 |  |  | 235 |  |  | 236 |  |  | Interest expense
Retirement benefit plan items |  |  |  |  |  |  |  |  |  |  |
Amortization of transition obligation, prior service credit and net losses recognized during the period in net periodic benefit cost |  | 11,344 |  |  | 23,280 |  |  | 15,291 |  |  | See Note 10 for additional details
Less: reclassification adjustment for impact of D&Os of the PUC included in regulatory assets |  | 207,833 |  |  | (222,595 | ) |  | 75,471 |  |  | See Note 10 for additional details
Total reclassifications |  | $ | 217,698 |  |  | $ | (199,818 | ) |  | $ | 90,917 |  |  |
Hawaiian Electric consolidated |  |  |  |  |  |  |  |
Retirement benefit plan items |  |  |  |  |  |  |  |  |  |  |
Amortization of transition obligation, prior service credit and net losses recognized during the period in net periodic benefit cost |  | $ | 10,212 |  |  | $ | 20,694 |  |  | $ | 13,673 |  |  | See Note 10 for additional details
Less: reclassification adjustment for impact of D&Os of the PUC included in regulatory assets |  | 207,833 |  |  | (222,595 | ) |  | 75,471 |  |  | See Note 10 for additional details
Total reclassifications |  | $ | 218,045 |  |  | $ | (201,901 | ) |  | $ | 89,144 |  |  |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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