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Condensed Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Statement of Comprehensive Income [Abstract] |  |  |  |
Net unrealized gains (losses) on securities arising during the period, (taxes) benefits | $ 1,592 | $ (1,334) | $ 6,459 | $ (1,482)
Reclassification adjustment to net income, tax expense (benefits) | 0 | 0 | 0 | (289)
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, taxes (benefits) | (1,862) | (2,508) | (3,654) | (5,010)
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, taxes | 1,674 | 2,281 | 3,277 | 4,582
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |  |
Reclassification adjustment to net income, tax expense (benefits) | 0 | 0 | 0 | (289)
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, taxes (benefits) | (1,683) | (2,306) | (3,297) | (4,610)
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, taxes | $ 1,674 | $ 2,281 | $ 3,277 | $ 4,582

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- Definition The amount of income taxes on the reclassification adjustments on pension and post retirement benefits for the accounting impact of the decisions issued by the Public Utilities Commission. + References No definition available. + Details
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- Definition Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e640-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580 + Details
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