Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net income for common stock	$ 40,247	$ 34,193
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 taxes	(13,297)	223
Derivatives qualifying as cash flow hedges:
Reclassification adjustment to net income, net of tax benefits	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	5,146	3,921
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes	(4,622)	(3,613)
Other comprehensive income (loss), net of taxes	(12,773)	985
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	27,474	35,178
Hawaiian Electric Company, Inc. and Subsidiaries
Net income for common stock	27,475	21,465
Derivatives qualifying as cash flow hedges:
Reclassification adjustment to net income, net of tax benefits	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	4,653	3,618
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes	(4,622)	(3,613)
Other comprehensive income (loss), net of taxes	31	459
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	$ 27,506	$ 21,924