Condensed Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net unrealized gains (losses) on available-for-sale investment securities arising during the period, tax	$ 360	$ 1,557	$ 7,836	$ 10,194
Reclassification adjustment for net realized gains included in net income, tax	0	(175)	(599)	(175)
Unrealized interest rate hedging losses arising during the period, tax	(51)	(208)	(739)	(577)
Adjustment for amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, tax	2,202	741	6,169	2,482
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, tax	(1,985)	(865)	(5,563)	(2,459)
Hawaiian Electric Company, Inc. and Subsidiaries
Adjustment for amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, tax	2,001	874	5,597	2,484
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, tax	$ (1,985)	$ (865)	$ (5,563)	$ (2,459)