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Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Net income for common stock | $ 65,900 | $ 60,073 | $ 152,201 | $ 132,927
Net unrealized gains (losses) on available-for-sale investment securities: |  |  |  |
Net unrealized gain (losses) on available-for-sale investment securities arising during the period, net of tax benefits (taxes) | (5,123) | 208 | (22,768) | 2,452
Derivatives qualifying as cash flow hedges: |  |  |  |
Reclassification adjustment to net income, net of tax benefits | 0 | 0 | 0 | 454
Retirement benefit plans: |  |  |  |
Adjustment for amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, net of tax benefits | 5,259 | 3,942 | 15,755 | 11,793
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes | (4,725) | (3,596) | (14,174) | (10,790)
Other comprehensive income (loss), net of taxes | (4,589) | 554 | (21,187) | 3,909
Comprehensive income attributable to Hawaiian Electric Industries, Inc. | 61,311 | 60,627 | 131,014 | 136,836
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |  |
Net income for common stock | 49,712 | 47,487 | 108,356 | 94,596
Derivatives qualifying as cash flow hedges: |  |  |  |
Reclassification adjustment to net income, net of tax benefits | 0 | 0 | 0 | 454
Retirement benefit plans: |  |  |  |
Adjustment for amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, net of tax benefits | 4,753 | 3,618 | 14,259 | 10,857
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes | (4,725) | (3,596) | (14,174) | (10,790)
Other comprehensive income (loss), net of taxes | 28 | 22 | 85 | 521
Comprehensive income attributable to Hawaiian Electric Industries, Inc. | $ 49,740 | $ 47,509 | $ 108,441 | $ 95,117

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