Shareholders' equity (Tables)

6 Months Ended

Jun. 30, 2016

Equity [Abstract]

Schedule of accumulated other comprehensive income

Changes in the balances of each component of accumulated other comprehensive income/(loss) (AOCI) were as follows:

	HEI Consolidated												Hawaiian Electric Consolidated
(in thousands)	Net unrealized gains (losses) on securities			Unrealized gains (losses) on derivatives			Retirement benefit plans			AOCI			Unrealized gains on derivatives		Retirement benefit plans		AOCI
Balance, December 31, 2015	$	(1,872	)	$	(54	)	$	(24,336	)	$	(26,262	)	$	—	$	925	$	925
Current period other comprehensive income	9,984			311			613			10,908			257		4		261
Balance, June 30, 2016	$	8,112		$	257		$	(23,723	)	$	(15,354	)	$	257	$	939	$	1,186
Balance, December 31, 2014	$	462		$	(289	)	$	(27,551	)	$	(27,378	)	$	—	$	45	$	45
Current period other comprehensive income	(243		)	118			1,056			931			—		7		7
Balance, June 30, 2015	$	219		$	(171	)	$	(26,495	)	$	(26,447	)	$	—	$	52	$	52

Schedule of reclassifications out of accumulated other comprehensive income/(loss)

Reclassifications out of AOCI were as follows:

	Amount reclassified from AOCI
	Three months ended June 30						Six months ended June 30						Affected line item in the
(in thousands)	2016			2015			2016			2015			Statement of Income
HEI consolidated
Net realized gains on securities	$	(360	)	$	—		$	(360	)	$	—		Revenues-bank (net gains on sales of securities)
Derivatives qualified as cash flow hedges
Interest rate contracts (settled in 2011)	—			59			54			118			Interest expense
Retirement benefit plan items
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost	3,698			5,780			7,236			11,239			See Note 6 for additional details
Less: reclassification adjustment for impact of D&Os of the PUC included in regulatory assets	(3,401		)	(5,272		)	(6,623		)	(10,183		)	See Note 6 for additional details
Total reclassifications	$	(63	)	$	567		$	307		$	1,174
Hawaiian Electric consolidated
Retirement benefit plan items
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost	$	3,391		$	5,257		$	6,627		$	10,190		See Note 6 for additional details
Less: reclassification adjustment for impact of D&Os of the PUC included in regulatory assets	(3,401		)	(5,272		)	(6,623		)	(10,183		)	See Note 6 for additional details
Total reclassifications	$	(10	)	$	(15	)	$	4		$	7