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Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Net income for common stock | $ 42,512 | $ 46,054 | $ 88,200 | $ 86,301
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) | 14,154 | (4,348) | 23,593 | (17,645)
Derivatives qualifying as cash flow hedges: |  |  |  |
Unrealized interest rate hedging losses arising during the period, net of tax benefits of $380, nil, $520 and nil, respectively | (660) | 0 | (1,063) | 0
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 | 2,503 | 5,350 | 5,006 | 10,496
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes | (2,298) | (4,827) | (4,596) | (9,449)
Other comprehensive income (loss), net of taxes | 13,699 | (3,825) | 22,940 | (16,598)
Comprehensive income attributable to Hawaiian Electric Industries, Inc. | 56,211 | 42,229 | 111,140 | 69,703
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |  |
Net income for common stock | 32,574 | 31,169 | 64,700 | 58,644
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 | 2,321 | 4,853 | 4,643 | 9,506
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes | (2,298) | (4,827) | (4,596) | (9,449)
Other comprehensive income (loss), net of taxes | 23 | 26 | 47 | 57
Comprehensive income attributable to Hawaiian Electric Industries, Inc. | $ 32,597 | $ 31,195 | $ 64,747 | $ 58,701

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