Hawaiian Electric Company, Inc. PFD SER E 5% (HAWEL) 10-Q 2 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 27, 2017
Entity Information [Line Items]
Entity Registrant Name	HAWAIIAN ELECTRIC INDUSTRIES INC
Entity Central Index Key	354,707
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		108,785,978
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Hawaiian Electric Company, Inc. and Subsidiaries
Entity Information [Line Items]
Entity Registrant Name	HAWAIIAN ELECTRIC COMPANY INC
Entity Central Index Key	46,207
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		16,019,785
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues
Total revenues	$ 673,185	$ 646,055	$ 1,897,028	$ 1,763,259
Expenses
Purchased power	161,000	158,000	441,000	413,000
Total expenses	563,640	540,613	1,643,725	1,503,511
Operating income (loss)
Total operating income	109,545	105,442	253,303	259,748
Merger termination fee	0	90,000	0	90,000
Interest expense, net—other than on deposit liabilities and other bank borrowings	(19,227)	(19,365)	(59,235)	(56,792)
Allowance for borrowed funds used during construction	1,339	854	3,371	2,276
Allowance for equity funds used during construction	3,482	2,274	8,908	6,010
Income before income taxes	95,139	179,205	206,347	301,242
Income taxes	34,595	51,592	72,003	96,203
Net income	60,544	127,613	134,344	205,039
Preferred stock dividends of subsidiaries	471	471	1,417	1,417
Net income for common stock	$ 60,073	$ 127,142	$ 132,927	$ 203,622
Basic earnings per common share (in dollars per share)	$ 0.55	$ 1.17	$ 1.22	$ 1.89
Diluted earnings per common share (in dollars per share)	0.55	1.17	1.22	1.88
Dividends declared per common share (in dollars per share)	$ 0.31000	$ 0.31	$ 0.93	$ 0.93
Weighted-average number of common shares outstanding (in shares)	108,786	108,268	108,737	107,951
Net effect of potentially dilutive shares (in shares)	79	204	172	220
Weighted-average shares assuming dilution (in shares)	108,865	108,472	108,909	108,171
Hawaiian Electric Company, Inc. and Subsidiaries
Revenues
Total revenues	$ 598,769	$ 572,253	$ 1,674,255	$ 1,549,700
Expenses
Fuel oil	146,258	128,624	431,787	334,263
Purchased power	160,347	157,750	440,538	412,667
Other operation and maintenance	100,102	94,789	306,716	298,260
Depreciation	48,206	46,759	144,578	140,300
Taxes, other than income taxes	56,780	54,519	159,575	148,386
Total expenses	511,693	482,441	1,483,194	1,333,876
Operating income (loss)
Total operating income	87,076	89,812	191,061	215,824
Allowance for borrowed funds used during construction	1,339	854	3,371	2,276
Allowance for equity funds used during construction	3,482	2,274	8,908	6,010
Interest expense and other charges, net	(16,907)	(17,323)	(52,625)	(49,734)
Income before income taxes	74,990	75,617	150,715	174,376
Income taxes	27,005	28,145	54,623	64,682
Net income	47,985	47,472	96,092	109,694
Preferred stock dividends of subsidiaries	228	228	686	686
Net income attributable to Hawaiian Electric	47,757	47,244	95,406	109,008
Preferred stock dividends of Hawaiian Electric	270	270	810	810
Net income for common stock	47,487	46,974	94,596	108,198
Electric utility
Revenues
Total revenues	598,769	572,253	1,674,255	1,549,700
Expenses
Total expenses	511,693	482,441	1,483,194	1,333,876
Operating income (loss)
Total operating income	87,076	89,812	191,061	215,824
Income before income taxes	74,990	75,617	150,715	174,376
Income taxes	27,005	28,145	54,623	64,682
Net income	47,985	47,472	96,092	109,694
Preferred stock dividends of subsidiaries	498	498	1,496	1,496
Net income for common stock	47,487	46,974	94,596	108,198
Bank
Revenues
Total revenues	74,289	73,708	222,474	213,297
Expenses
Total expenses	47,525	50,981	146,754	150,752
Operating income (loss)
Total operating income	26,764	22,727	75,720	62,545
Income before income taxes	26,764	22,727	75,720	62,545
Income taxes	9,172	7,623	25,582	21,483
Net income	17,592	15,104	50,138	41,062
Preferred stock dividends of subsidiaries	0	0	0	0
Net income for common stock	17,592	15,104	50,138	41,062
Other
Revenues
Total revenues	127	94	299	262
Expenses
Total expenses	4,422	7,191	13,777	18,883
Operating income (loss)
Total operating income	(4,295)	(7,097)	(13,478)	(18,621)
Income before income taxes	(6,615)	80,861	(20,088)	64,321
Income taxes	(1,582)	15,824	(8,202)	10,038
Net income	(5,033)	65,037	(11,886)	54,283
Preferred stock dividends of subsidiaries	(27)	(27)	(79)	(79)
Net income for common stock	$ (5,006)	$ 65,064	$ (11,807)	$ 54,362

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net income for common stock	$ 60,073	$ 127,142	$ 132,927	$ 203,622
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	208	(2,147)	2,452	8,197
Reclassification adjustment for net realized gains included in net income, net of taxes	0	0	0	(360)
Derivatives qualifying as cash flow hedges:
Effective portion of foreign currency hedge net unrealized gains (losses) arising during the period, net of (taxes) benefits	0	321	0	578
Reclassification adjustment to net income, net of tax benefits	0	(173)	454	(119)
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	3,942	3,641	11,793	10,877
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes	(3,596)	(3,311)	(10,790)	(9,934)
Other comprehensive income (loss), net of taxes	554	(1,669)	3,909	9,239
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	60,627	125,473	136,836	212,861
Hawaiian Electric Company, Inc. and Subsidiaries
Net income for common stock	47,487	46,974	94,596	108,198
Derivatives qualifying as cash flow hedges:
Effective portion of foreign currency hedge net unrealized gains (losses) arising during the period, net of (taxes) benefits	0	321	0	578
Reclassification adjustment to net income, net of tax benefits	0	(173)	454	(173)
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	3,618	3,314	10,857	9,941
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes	(3,596)	(3,311)	(10,790)	(9,934)
Other comprehensive income (loss), net of taxes	22	151	521	412
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	$ 47,509	$ 47,125	$ 95,117	$ 108,610

Condensed Consolidated Stateme4

Condensed Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net unrealized gains (losses) on securities arising during the period, taxes (benefits)	$ 137	$ (1,417)	$ 1,619	$ 5,413
Reclassification adjustment for sale of securities, tax (benefits)	0	0	0	238
Effective portion of foreign currency hedge net unrealized gains, taxes	0	205	0	368
Reclassification adjustment to net income, taxes	0	110	(289)	75
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, tax benefits	(2,516)	(2,324)	(7,526)	(6,943)
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, taxes	2,290	2,109	6,872	6,327
Hawaiian Electric Company, Inc. and Subsidiaries
Effective portion of foreign currency hedge net unrealized gains, taxes	0	205	0	368
Reclassification adjustment to net income, taxes	0	110	(289)	110
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, tax benefits	(2,306)	(2,110)	(6,916)	(6,331)
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, taxes	$ 2,290	$ 2,109	$ 6,872	$ 6,327

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents	$ 202,173	$ 278,452
Accounts receivable and unbilled revenues, net	264,426	237,950
Available-for-sale investment securities, at fair value	1,320,110	1,105,182
Stock in Federal Home Loan Bank, at cost	9,706	11,218
Loans receivable held for investment, net	4,623,234	4,683,160
Loans held for sale, at lower of cost or fair value	15,728	18,817
Property, plant and equipment, net of accumulated depreciation	4,813,875	4,603,465
Regulatory assets	936,964	957,451
Other	474,444	447,621
Goodwill	82,190	82,190
Utility property, plant and equipment
Total property, plant and equipment, net	4,813,875	4,603,465
Current assets
Cash and cash equivalents	202,173	278,452
Other long-term assets
Total assets	12,742,850	12,425,506
Liabilities
Accounts payable	160,897	143,279
Interest and dividends payable	26,484	25,225
Deposit liabilities	5,752,326	5,548,929
Short-term borrowings—other than bank	24,498	0
Other bank borrowings	153,552	192,618
Long-term debt, net—other than bank	1,618,446	1,619,019
Deferred income taxes	756,814	728,806
Regulatory liabilities	466,216	410,693
Contributions in aid of construction	565,118	543,525
Defined benefit pension and other postretirement benefit plans liability	620,788	638,854
Other	460,396	473,512
Total liabilities	10,605,535	10,324,460
Capitalization
Retained earnings	470,750	438,972
Accumulated other comprehensive loss, net of tax benefits	(29,220)	(33,129)
Total shareholders’ equity	2,103,022	2,066,753
Preferred stock, no par value, authorized 10,000,000 shares; issued: none	0	0
Preferred stock of subsidiaries - not subject to mandatory redemption	34,293	34,293
Commitments and contingencies
Current liabilities
Interest and dividends payable	26,484	25,225
Deferred credits and other liabilities
Deferred income taxes	756,814	728,806
Contributions in aid of construction	565,118	543,525
Shareholders’ equity
Preferred stock, no par value, authorized 10,000,000 shares; issued: none	0	0
Common stock, no par value, authorized 200,000,000 shares; issued and outstanding: 108,785,978 shares and 108,583,413 shares at September 30, 2017 and December 31, 2016, respectively	1,661,492	1,660,910
Retained earnings	470,750	438,972
Accumulated other comprehensive loss, net of tax benefits	(29,220)	(33,129)
Total shareholders’ equity	2,103,022	2,066,753
Total liabilities and shareholders’ equity	12,742,850	12,425,506
Hawaiian Electric Company, Inc. and Subsidiaries
Assets
Cash and cash equivalents	9,987	74,286
Property, plant and equipment, net of accumulated depreciation	4,686,639	4,508,752
Utility property, plant and equipment
Land	53,913	53,153
Plant and equipment	6,778,254	6,605,732
Less accumulated depreciation	(2,460,429)	(2,369,282)
Construction in progress	307,492	211,742
Utility property, plant and equipment, net	4,679,230	4,501,345
Nonutility property, plant and equipment, less accumulated depreciation	7,409	7,407
Total property, plant and equipment, net	4,686,639	4,508,752
Current assets
Cash and cash equivalents	9,987	74,286
Customer accounts receivable, net	133,135	123,688
Accrued unbilled revenues, net	109,707	91,693
Other accounts receivable, net	4,097	5,233
Fuel oil stock, at average cost	60,253	66,430
Materials and supplies, at average cost	55,959	53,679
Prepayments and other	29,871	23,100
Regulatory assets	72,773	66,032
Total current assets	475,782	504,141
Other long-term assets
Regulatory assets	864,191	891,419
Unamortized debt expense	661	208
Other	80,228	70,908
Total other long-term assets	945,080	962,535
Total assets	6,107,501	5,975,428
Liabilities
Interest and dividends payable	25,261	22,838
Deferred income taxes	767,611	733,659
Contributions in aid of construction	565,118	543,525
Capitalization
Common stock ($6 2/3 par value, authorized 50,000,000 shares; outstanding 16,019,785 shares at September 30, 2017 and December 31, 2016)	106,818	106,818
Premium on capital stock	601,487	601,491
Retained earnings	1,120,571	1,091,800
Accumulated other comprehensive loss, net of tax benefits	199	(322)
Total shareholders’ equity	1,829,075	1,799,787
Preferred stock, no par value, authorized 10,000,000 shares; issued: none	34,293	34,293
Long-term debt, net	1,318,623	1,319,260
Total capitalization	3,181,991	3,153,340
Commitments and contingencies
Current liabilities
Short-term borrowings from non-affiliates	6,000	0
Accounts payable	124,240	117,814
Interest and dividends payable	25,261	22,838
Taxes accrued	183,365	172,730
Regulatory liabilities	3,399	3,762
Other	59,611	55,221
Total current liabilities	401,876	372,365
Deferred credits and other liabilities
Deferred income taxes	767,611	733,659
Regulatory liabilities	462,817	406,931
Unamortized tax credits	88,827	88,961
Defined benefit pension and other postretirement benefit plans liability	581,713	599,726
Other	57,548	76,921
Total deferred credits and other liabilities	1,958,516	1,906,198
Contributions in aid of construction	565,118	543,525
Shareholders’ equity
Preferred stock, no par value, authorized 10,000,000 shares; issued: none	34,293	34,293
Retained earnings	1,120,571	1,091,800
Accumulated other comprehensive loss, net of tax benefits	199	(322)
Total shareholders’ equity	1,829,075	1,799,787
Total liabilities and shareholders’ equity	$ 6,107,501	$ 5,975,428

Condensed Consolidated Balance6

Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Property, plant and equipment, accumulated depreciation	$ 2,537,320	$ 2,444,348
Preferred stock, authorized shares (in shares)	10,000,000	10,000,000
Preferred stock, issued shares (in shares)	0	0
Common stock, authorized shares (in shares)	200,000,000	200,000,000
Common stock, issued shares (in shares)	108,785,978	108,583,413
Common stock, outstanding shares (in shares)	108,785,978	108,583,413
Hawaiian Electric Company, Inc. and Subsidiaries
Nonutility property, plant and equipment, accumulated depreciation	$ 1,233	$ 1,232
Common stock, par value (in dollars per share)	$ 6.67	$ 6.67
Common stock, authorized shares (in shares)	50,000,000	50,000,000
Common stock, outstanding shares (in shares)	16,019,785	16,019,785

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Changes in Shareholders' Equity and Common Stock Equity (unaudited) - USD ($) $ in Thousands	Total	Hawaiian Electric Company, Inc. and Subsidiaries	Common stock	Common stockHawaiian Electric Company, Inc. and Subsidiaries	Premium on capital stockHawaiian Electric Company, Inc. and Subsidiaries	Retained Earnings	Retained EarningsHawaiian Electric Company, Inc. and Subsidiaries	Accumulated other comprehensive income (loss)	Accumulated other comprehensive income (loss)Hawaiian Electric Company, Inc. and Subsidiaries
Beginning Balance at Dec. 31, 2015	$ 1,927,640	$ 1,728,325	$ 1,629,136	$ 105,388	$ 578,930	$ 324,766	$ 1,043,082	$ (26,262)	$ 925
Beginning Balance (in shares) at Dec. 31, 2015			107,460,000	15,805,000
Increase (decrease) in stockholders' equity
Net income for common stock	203,622	108,198				203,622	108,198
Other comprehensive income, net of taxes	9,239	412						9,239	412
Issuance of common stock, net of expenses	28,285		$ 28,285
Issuance of common stock, net of expenses (in shares)			1,043,000
Common stock dividends	(100,398)	(70,199)				(100,398)	(70,199)
Common stock issuance expenses		(9)			(9)
Ending Balance at Sep. 30, 2016	2,068,388	1,766,727	$ 1,657,421	$ 105,388	578,921	427,990	1,081,081	(17,023)	1,337
Ending Balance (in shares) at Sep. 30, 2016			108,503,000	15,805,000
Beginning Balance at Dec. 31, 2016	$ 2,066,753	1,799,787	$ 1,660,910	$ 106,818	601,491	438,972	1,091,800	(33,129)	(322)
Beginning Balance (in shares) at Dec. 31, 2016	108,583,413		108,583,000	16,020,000
Increase (decrease) in stockholders' equity
Net income for common stock	$ 132,927	94,596				132,927	94,596
Other comprehensive income, net of taxes	3,909	521						3,909	521
Issuance of common stock, net of expenses	582		$ 582
Issuance of common stock, net of expenses (in shares)			203,000
Common stock dividends	(101,149)	(65,825)				(101,149)	(65,825)
Common stock issuance expenses		(4)			(4)
Ending Balance at Sep. 30, 2017	$ 2,103,022	$ 1,829,075	$ 1,661,492	$ 106,818	$ 601,487	$ 470,750	$ 1,120,571	$ (29,220)	$ 199
Ending Balance (in shares) at Sep. 30, 2017	108,785,978		108,786,000	16,020,000

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities
Net income	$ 134,344,000	$ 205,039,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	150,123,000	145,684,000
Other amortization	15,362,000	7,368,000
Provision for loan losses	7,231,000	15,266,000
Loans receivable originated and purchased, held for sale	(105,816,000)	(172,657,000)
Proceeds from sale of loans receivable, held for sale	119,731,000	168,490,000
Deferred income taxes	21,397,000	30,667,000
Share-based compensation expense	4,383,000	3,581,000
Allowance for equity funds used during construction	(8,908,000)	(6,010,000)
Other	(1,350,000)	3,234,000
Changes in assets and liabilities
Increase in accounts receivable and unbilled revenues, net	(26,250,000)	(12,104,000)
Decrease in fuel oil stock	6,177,000	6,736,000
Decrease (increase) in regulatory assets	3,922,000	(2,251,000)
Increase (decrease) in accounts, interest and dividends payable	(10,390,000)	3,399,000
Change in prepaid and accrued income taxes, tax credits and utility revenue taxes	2,828,000	52,558,000
Increase in defined benefit pension and other postretirement benefit plans liability	670,000	150,000
Change in other assets and liabilities	(22,311,000)	(39,850,000)
Net cash provided by operating activities	291,143,000	409,300,000
Cash flows from investing activities
Available-for-sale investment securities purchased	(369,467,000)	(354,165,000)
Principal repayments on available-for-sale investment securities	155,026,000	172,829,000
Proceeds from sale of available-for-sale investment securities	0	16,423,000
Purchase of stock from Federal Home Loan Bank	(2,868,000)	(2,773,000)
Redemption of stock from Federal Home Loan Bank	4,380,000	2,233,000
Net decrease (increase) in loans held for investment	13,188,000	(175,303,000)
Proceeds from sale of commercial loans	31,427,000	37,946,000
Proceeds from sale of real estate acquired in settlement of loans	411,000	829,000
Proceeds from sale of real estate held-for-sale	0	1,764,000
Capital expenditures	(314,404,000)	(259,207,000)
Contributions in aid of construction	40,603,000	23,568,000
Other	1,345,000	112,000
Net cash used in investing activities	(440,359,000)	(535,744,000)
Cash flows from financing activities
Net increase in deposit liabilities	203,397,000	355,467,000
Net increase (decrease) in short-term borrowings with original maturities of three months or less	24,498,000	(103,063,000)
Net increase (decrease) in retail repurchase agreements	24,469,000	(21,121,000)
Proceeds from other bank borrowings	59,500,000	55,835,000
Repayments of other bank borrowings	(123,034,000)	(97,902,000)
Proceeds from issuance of long-term debt	265,000,000	75,000,000
Repayment of long-term debt and funds transferred for redemption of special purpose revenue bonds	(265,000,000)	(75,000,000)
Withheld shares for employee taxes on vested share-based compensation	(3,796,000)	(2,398,000)
Net proceeds from issuance of common stock	0	10,901,000
Common stock dividends	(101,149,000)	(83,620,000)
Preferred stock dividends of subsidiaries	(1,417,000)	(1,417,000)
Other	(9,531,000)	(2,361,000)
Net cash provided by financing activities	72,937,000	110,321,000
Net decrease in cash and cash equivalents	(76,279,000)	(16,123,000)
Cash and cash equivalents, beginning of period	278,452,000	300,478,000
Cash and cash equivalents, end of period	202,173,000	284,355,000
Hawaiian Electric Company, Inc. and Subsidiaries
Cash flows from operating activities
Net income	96,092,000	109,694,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	144,578,000	140,300,000
Other amortization	6,118,000	5,380,000
Deferred income taxes	29,537,000	55,648,000
Allowance for equity funds used during construction	(8,908,000)	(6,010,000)
Other	526,000	3,234,000
Changes in assets and liabilities
Increase in accounts receivable	(8,087,000)	(655,000)
Increase in accrued unbilled revenues	(18,014,000)	(10,658,000)
Decrease in fuel oil stock	6,177,000	6,736,000
Increase in materials and supplies	(2,280,000)	(2,927,000)
Decrease (increase) in regulatory assets	3,922,000	(2,251,000)
Increase (decrease) in accounts payable	(22,841,000)	(676,000)
Change in prepaid and accrued income taxes, tax credits and utility revenue taxes	5,291,000	(9,595,000)
Increase in defined benefit pension and other postretirement benefit plans liability	453,000	360,000
Change in other assets and liabilities	(2,662,000)	(13,309,000)
Net cash provided by operating activities	229,902,000	275,271,000
Cash flows from investing activities
Capital expenditures	(278,004,000)	(250,704,000)
Contributions in aid of construction	40,603,000	23,568,000
Other	8,114,000	1,100,000
Net cash used in investing activities	(229,287,000)	(226,036,000)
Cash flows from financing activities
Net increase (decrease) in short-term borrowings with original maturities of three months or less	6,000,000	21,000,000
Proceeds from issuance of long-term debt	265,000,000	0
Repayment of long-term debt and funds transferred for redemption of special purpose revenue bonds	(265,000,000)	0
Common stock dividends	(65,825,000)	(70,199,000)
Preferred stock dividends of Hawaiian Electric and subsidiaries	(1,496,000)	(1,496,000)
Other	(3,593,000)	(12,000)
Net cash provided by financing activities	(64,914,000)	(50,707,000)
Net decrease in cash and cash equivalents	(64,299,000)	(1,472,000)
Cash and cash equivalents, beginning of period	74,286,000	24,449,000
Cash and cash equivalents, end of period	$ 9,987,000	$ 22,977,000

Basis of presentation

Basis of presentation	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of presentation	Basis of presentation The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP) for interim financial information, the instructions to SEC Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In preparing the unaudited condensed consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the balance sheet and the reported amounts of revenues and expenses for the period. Actual results could differ significantly from those estimates. The accompanying unaudited condensed consolidated financial statements and the following notes should be read in conjunction with the audited consolidated financial statements and the notes thereto in HEI’s and Hawaiian Electric’s Form 10-K for the year ended December 31, 2016 . In the opinion of HEI’s and Hawaiian Electric’s management, the accompanying unaudited condensed consolidated financial statements contain all material adjustments required by GAAP to fairly state consolidated HEI’s and Hawaiian Electric’s financial positions as of September 30, 2017 and December 31, 2016 , the results of their operations for the three and nine months ended September 30, 2017 and 2016 and their cash flows for the nine months ended September 30, 2017 and 2016 . All such adjustments are of a normal recurring nature, unless otherwise disclosed below or in other referenced material. Results of operations for interim periods are not necessarily indicative of results for the full year. Recent accounting pronouncements. Stock compensation . In March 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-09, “Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting,” which simplifies several aspects of the accounting for share-based payment transactions. The Company adopted ASU No. 2016-09 in the first quarter of 2017. From January 1, 2017, all excess tax benefits and tax deficiencies are recognized as income tax expense or benefit in the income statement. From January 1, 2017, no excess tax benefits or deficiencies are included in determining the assumed proceeds under the treasury stock method of calculating diluted EPS. As of January 1, 2017, HEI adopted an accounting policy to account for forfeitures when they occur. From January 1, 2017, HEI retrospectively applied the cashflow guidance for taxes paid (equivalent to the value of withheld shares for tax withholding purposes) and excess tax benefits. Excess tax benefits are classified along with other income tax cash flows as an operating activity and the cash payments made to taxing authorities on the employees’ behalf for withheld shares are classified as financing activities on the HEI unaudited condensed consolidated statements of cash flows for all periods that are presented. Goodwill impairment . In January 2017, the FASB issued ASU No. 2017-04, “Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” Prior to the adoption of ASU No. 2017-04, an entity was required to perform a two-step test to determine the amount, if any, of goodwill impairment. In Step 1, an entity compared the fair value of a reporting unit with its carrying amount, including goodwill. If the carrying amount of the reporting unit exceeded its fair value, the entity performed Step 2 and compared the implied fair value of goodwill with the carrying amount of that goodwill for that reporting unit. An impairment charge equal to the amount by which the carrying amount of goodwill for the reporting unit exceeded the implied fair value of that goodwill would then be recorded. ASU No. 2017-04 removes the second step of the test. An entity will apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit's carrying amount over its fair value. ASU No. 2017-04 does not amend the optional qualitative assessment of goodwill impairment. The Company plans to adopt ASU No. 2017-04 prospectively in the fourth quarter of 2017 and believes the impact of adoption will not be material to the Company’s and Hawaiian Electric’s consolidated financial statements. Revenues from contracts with customers . In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606).” The core principle of the guidance in ASU No. 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should: (1) identify the contract/s with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when, or as, the entity satisfies a performance obligation. ASU No. 2014-09 also requires disclosure of the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. As of September 30, 2017 , the Company has identified its revenue streams from, and performance obligations related to, contracts with customers and has performed an analysis of these revenue streams for the impacts of Topic 606. The revenue subject to Topic 606 is largely the Utilities’ electric sales revenue and the Utilities’ and ASB’s fee income. The Company and Hawaiian Electric do not expect a material impact on the timing or pattern of revenue recognition upon adoption of ASU No. 2014-09, but do expect to provide expanded disclosures around the amount, timing, nature and uncertainty of our revenues from contracts with customers. The Company plans to adopt ASU No. 2014-09 (and subsequently issued revenue-related ASUs) in the first quarter of 2018 using the modified retrospective approach. Financial instruments . In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities,” which, among other things: • Requires equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. • Requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. • Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables). • Eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost. The Company plans to adopt ASU No. 2016-01 in the first quarter of 2018 and expects changes to disclosures, but otherwise believes the impact of adoption will not be material to the Company’s and Hawaiian Electric’s consolidated financial statements. Cash Flows . In August 2016, the FASB issued ASU No. 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments,” which provides guidance on eight specific cash flow issues - debt prepayment or debt extinguishment costs, settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims, proceeds from the settlement of corporate-owned life insurance policies (including bank-owned life insurance policies), distributions received from equity method investees, beneficial interests in securitization transactions, and separately identifiable cash flows and application of the predominance principle. The Company plans to adopt ASU No. 2016-15 in the first quarter of 2018 using a retrospective transition method and believes the impact of adoption will not be material to the Company’s and Hawaiian Electric’s consolidated statements of cash flows. Restricted cash . In November 2016, the FASB issued ASU No. 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash,” which requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. The Company plans to adopt ASU No. 2016-18 in the first quarter of 2018 using a retrospective transition method and believes the impact of adoption will not be material to the Company’s and Hawaiian Electric’s consolidated statements of cash flows. Net periodic pension cost and net periodic postretirement benefit cost . In March 2017, the FASB issued ASU No. 2017-07, “Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost,” which requires that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. It also requires the other components of net periodic pension cost (NPPC) and net periodic postretirement benefit cost (NPBC) as defined in paragraphs 715-30-35-4 and 715-60-35-9 to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations. Additionally, only the service cost component is eligible for capitalization under GAAP, when applicable. The Company plans to adopt ASU No. 2017-07 in the first quarter of 2018 and has not yet determined the impact of adoption. HEI and ASB do not capitalize pension and OPEB costs. The Utilities are seeking recovery of their defined benefit costs as reflected under the requirements of ASU No. 2017-07 (i.e., only the service cost components of NPPC and NPBC will be eligible for capitalization) in their rate cases. The Hawaii Electric Light 2016 test year and the Hawaiian Electric consolidated 2014 and 2017 test year revenue requirements were based on their current accounting for retirement benefits, and reflect the capitalization of a portion of the total pension and OPEB costs and the amortization of the pension and OPEB regulatory assets or liabilities (based on the difference between total pension and OPEB costs and the pension and OPEB costs included in rates). In Hawaii Electric Light’s (2016 test year) and Hawaiian Electric’s (consolidated 2014 and 2017 test years) on-going rate cases, each utility proposed that for 2018 and until its next rate case, the non-service cost portion of the test year pension and OPEB costs that are estimated to be capitalized, be deferred and included in the pension and OPEB tracking mechanisms, and amortized beginning with the next rate case. Maui Electric proposed in its consolidated 2015 and 2018 test year rate case filing to adopt the accounting prescribed by ASU No. 2017-07. The impact of adoption will largely be dependent on the PUC's decisions. Leases . In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842),” which requires that lessees recognize a liability to make lease payments (the lease liability) and a right-of-use asset, representing its right to use the underlying asset for the lease term, for all leases (except short-term leases) at the commencement date. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election and recognize lease expense for such leases generally on a straight-line basis over the lease term. For finance leases, a lessee is required to recognize interest on the lease liability separately from amortization of the right-of-use asset in the condensed consolidated statement of income. For operating leases, a lessee is required to recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term on a generally straight-line basis. The Company plans to adopt ASU No. 2016-02 in the first quarter of 2019 and has not yet determined the method or impact of adoption. Credit Losses . In June 2016, the FASB issued ASU No. 2016-13, “ Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ,” which is intended to improve financial reporting by requiring timelier recording of credit losses on loans and other financial instruments held by financial institutions and other organizations . ASU No. 2016-13 requires the measurement of all expected credit losses for financial assets held at the reporting date (based on historical experience, current conditions and reasonable and supportable forecasts) and enhanced disclosures to help financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, ASU No. 2016-13 amends the accounting for credit losses on available-for-sale (AFS) debt securities and purchased financial assets with credit deterioration. The other-than-temporary impairment model of accounting for credit losses on AFS debt securities will be replaced with an estimate of expected credit losses only when the fair value is below the amortized cost of the asset. The length of time the fair value of an AFS debt security has been below the amortized cost will no longer impact the determination of whether a credit loss exists. The AFS debt security model will also require the use of an allowance to record the estimated losses (and subsequent recoveries). The accounting for the initial recognition of the estimated expected credit losses for purchased financial assets with credit deterioration would be recognized through an allowance for credit losses with an offset to the cost basis of the related financial asset at acquisition (i.e., there is no impact to net income at initial recognition). The Company plans to adopt ASU No. 2016-13 in the first quarter of 2020 and has not yet determined the impact of adoption.

Segment financial information

Segment financial information	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Segment financial information	Segment financial information (in thousands) Electric utility Bank Other Total Three months ended September 30, 2017 Revenues from external customers $ 598,756 $ 74,289 $ 140 $ 673,185 Intersegment revenues (eliminations) 13 — (13 ) — Revenues $ 598,769 $ 74,289 $ 127 $ 673,185 Income (loss) before income taxes $ 74,990 $ 26,764 $ (6,615 ) $ 95,139 Income taxes (benefit) 27,005 9,172 (1,582 ) 34,595 Net income (loss) 47,985 17,592 (5,033 ) 60,544 Preferred stock dividends of subsidiaries 498 — (27 ) 471 Net income (loss) for common stock $ 47,487 $ 17,592 $ (5,006 ) $ 60,073 Nine months ended September 30, 2017 Revenues from external customers $ 1,674,158 $ 222,474 $ 396 $ 1,897,028 Intersegment revenues (eliminations) 97 — (97 ) — Revenues $ 1,674,255 $ 222,474 $ 299 $ 1,897,028 Income (loss) before income taxes $ 150,715 $ 75,720 $ (20,088 ) $ 206,347 Income taxes (benefit) 54,623 25,582 (8,202 ) 72,003 Net income (loss) 96,092 50,138 (11,886 ) 134,344 Preferred stock dividends of subsidiaries 1,496 — (79 ) 1,417 Net income (loss) for common stock $ 94,596 $ 50,138 $ (11,807 ) $ 132,927 Total assets (at September 30, 2017) $ 6,107,501 $ 6,618,907 $ 16,442 $ 12,742,850 Three months ended September 30, 2016 Revenues from external customers $ 572,208 $ 73,708 $ 139 $ 646,055 Intersegment revenues (eliminations) 45 — (45 ) — Revenues $ 572,253 $ 73,708 $ 94 $ 646,055 Income before income taxes $ 75,617 $ 22,727 $ 80,861 $ 179,205 Income taxes 28,145 7,623 15,824 51,592 Net income 47,472 15,104 65,037 127,613 Preferred stock dividends of subsidiaries 498 — (27 ) 471 Net income for common stock $ 46,974 $ 15,104 $ 65,064 $ 127,142 Nine months ended September 30, 2016 Revenues from external customers $ 1,549,602 $ 213,297 $ 360 $ 1,763,259 Intersegment revenues (eliminations) 98 — (98 ) — Revenues $ 1,549,700 $ 213,297 $ 262 $ 1,763,259 Income before income taxes $ 174,376 $ 62,545 $ 64,321 $ 301,242 Income taxes 64,682 21,483 10,038 96,203 Net income 109,694 41,062 54,283 205,039 Preferred stock dividends of subsidiaries 1,496 — (79 ) 1,417 Net income for common stock $ 108,198 $ 41,062 $ 54,362 $ 203,622 Total assets (at December 31, 2016) $ 5,975,428 $ 6,421,357 $ 28,721 $ 12,425,506 Intercompany electricity sales of the Utilities to the bank and “other” segments are not eliminated because those segments would need to purchase electricity from another source if it were not provided by the Utilities and the profit on such sales is nominal. Bank fees that ASB charges the Utilities and “other” segments are not eliminated because those segments would pay fees to another financial institution if they were to bank with another institution and the profit on such fees is nominal. Pending acquisition of Hamakua power plant. In September 2017, HEI formed new 100% owned subsidiaries--Pacific Current, LLC and its subsidiary Hamakua Holdings, LLC and its subsidiary, Hamakua Energy, LLC. Hamakua Energy, LLC has agreed to acquire Hamakua Energy Partners, L.P.’s (HEP’s) 60 -megawatt power plant from an affiliate of ArcLight Capital Partners, a Boston-based private equity firm focused on energy infrastructure investments. The plant sells power to Hawaii Electric Light under an existing power purchase agreement (PPA) that expires in 2030, the terms of which will remain the same upon completion of the acquisition. Closing of the transaction is expected later in 2017.

Electric utility segment

Electric utility segment	9 Months Ended
	Sep. 30, 2017
Electric utility subsidiary [Abstract]
Electric utility segment	Electric utility segment Revenue taxes. The Utilities’ revenues include amounts for the recovery of various Hawaii state revenue taxes. Revenue taxes are generally recorded as an expense in the period the related revenues are recognized. However, the Utilities’ revenue tax payments to the taxing authorities in the period are based on the prior year’s billed revenues (in the case of public service company taxes and PUC fees) or on the current year’s cash collections from electric sales (in the case of franchise taxes). The Utilities included in the third quarters of 2017 and 2016 and nine months ended September 30, 2017 and 2016 approximately $54 million , $51 million , $150 million and $138 million , respectively, of revenue taxes in “revenues” and in “taxes, other than income taxes” expense, in the unaudited condensed consolidated statements of income. Unconsolidated variable interest entities. HECO Capital Trust III . HECO Capital Trust III (Trust III) was created and exists for the exclusive purposes of (i) issuing in March 2004 2,000,000 6.50% Cumulative Quarterly Income Preferred Securities, Series 2004 (2004 Trust Preferred Securities) ( $50 million aggregate liquidation preference) to the public and trust common securities ( $1.5 million aggregate liquidation preference) to Hawaiian Electric, (ii) investing the proceeds of these trust securities in 2004 Debentures issued by Hawaiian Electric in the principal amount of $31.5 million and issued by Hawaii Electric Light and Maui Electric each in the principal amount of $10 million , (iii) making distributions on these trust securities and (iv) engaging in only those other activities necessary or incidental thereto. The 2004 Trust Preferred Securities are mandatorily redeemable at the maturity of the underlying debt on March 18, 2034, which maturity may be extended to no later than March 18, 2053; and are currently redeemable at the issuer’s option without premium. The 2004 Debentures, together with the obligations of the Utilities under an expense agreement and Hawaiian Electric’s obligations under its trust guarantee and its guarantee of the obligations of Hawaii Electric Light and Maui Electric under their respective debentures, are the sole assets of Trust III. Taken together, Hawaiian Electric’s obligations under the Hawaiian Electric debentures, the Hawaiian Electric indenture, the subsidiary guarantees, the trust agreement, the expense agreement and trust guarantee provide, in the aggregate, a full, irrevocable and unconditional guarantee of payments of amounts due on the Trust Preferred Securities. Trust III has at all times been an unconsolidated subsidiary of Hawaiian Electric. Since Hawaiian Electric, as the holder of 100% of the trust common securities, does not absorb the majority of the variability of Trust III, Hawaiian Electric is not the primary beneficiary and does not consolidate Trust III in accordance with accounting rules on the consolidation of VIEs. Trust III’s balance sheets as of September 30, 2017 and December 31, 2016 each consisted of $51.5 million of 2004 Debentures; $50.0 million of 2004 Trust Preferred Securities; and $1.5 million of trust common securities. Trust III’s income statements for the nine months ended September 30, 2017 consisted of $2.5 million of interest income received from the 2004 Debentures; $2.4 million of distributions to holders of the Trust Preferred Securities; and $75,000 of common dividends on the trust common securities to Hawaiian Electric. As long as the 2004 Trust Preferred Securities are outstanding, Hawaiian Electric is not entitled to receive any funds from Trust III other than pro-rata distributions, subject to certain subordination provisions, on the trust common securities. In the event of a default by Hawaiian Electric in the performance of its obligations under the 2004 Debentures or under its Guarantees, or in the event any of the Utilities elect to defer payment of interest on any of their respective 2004 Debentures, then Hawaiian Electric will be subject to a number of restrictions, including a prohibition on the payment of dividends on its common stock. Power purchase agreements . As of September 30, 2017 , the Utilities had five PPAs for firm capacity and other PPAs with independent power producers (IPPs) and Schedule Q providers (e.g., customers with cogeneration and/or power production facilities who buy power from or sell power to the Utilities), none of which is currently required to be consolidated as VIEs. Pursuant to the current accounting standards for VIEs, the Utilities are deemed to have variable interest in Kalaeloa Partners, L.P. (Kalaeloa), AES Hawaii, Inc. (AES Hawaii) and HEP by reason of the provisions of the PPAs that the Utilities have with the three IPPs. However, management has concluded that the Utilities are not the primary beneficiary of Kalaeloa, AES Hawaii or HEP because the Utilities do not have the power to direct the activities that most significantly impact the three IPPs’ economic performance nor the obligation to absorb their expected losses, if any, that could potentially be significant to the IPPs. Thus, the Utilities have not consolidated Kalaeloa, AES Hawaii or HEP in its unaudited condensed consolidated financial statements. For the other IPPs, the Utilities have concluded that the consolidation of the IPPs was not required because either the Utilities do not have variable interests in the IPPs due to the absence of obligation in the PPAs for the Utilities to absorb any variability of the IPPs, or the IPPs were either a “business” or “governmental organization,” and thus excluded from the scope of accounting standards for VIEs. Two IPPs of as-available energy declined to provide the information necessary for Utilities to determine the applicability of accounting standards for VIEs. If information is ultimately received from the IPPs, a possible outcome of future analyses of such information is the consolidation of one or both of such IPPs in the unaudited condensed consolidated financial statements. The consolidation of any significant IPP could have a material effect on the unaudited condensed consolidated financial statements, including the recognition of a significant amount of assets and liabilities and, if such a consolidated IPP were operating at a loss and had insufficient equity, the potential recognition of such losses. If the Utilities determine they are required to consolidate the financial statements of such an IPP and the consolidation has a material effect, the Utilities would retrospectively apply accounting standards for VIEs. Commitments and contingencies. Contingencies . The Utilities are subject in the normal course of business to pending and threatened legal proceedings. Management does not anticipate that the aggregate ultimate liability arising out of these pending or threatened legal proceedings will be material to its financial position. However, the Utilities cannot rule out the possibility that such outcomes could have a material effect on the results of operations or liquidity for a particular reporting period in the future. Power purchase agreements . Purchases from all IPPs were as follows: Three months ended September 30 Nine months ended September 30 (in millions) 2017 2016 2017 2016 Kalaeloa $ 48 $ 44 $ 136 $ 109 AES Hawaii 39 38 103 112 HPOWER 18 19 51 52 Puna Geothermal Venture 10 7 28 19 HEP 8 8 25 23 Other IPPs 1 38 42 98 98 Total IPPs $ 161 $ 158 $ 441 $ 413 1 Includes wind power, solar power, feed-in tariff projects and other PPAs. Kalaeloa Partners, L.P. In October 1988, Hawaiian Electric entered into a PPA with Kalaeloa, subsequently approved by the PUC, which provided that Hawaiian Electric would purchase 180 megawatts (MW) of firm capacity for a period of 25 years beginning in May 1991. In October 2004, Hawaiian Electric and Kalaeloa entered into amendments to the PPA, subsequently approved by the PUC, which together effectively increased the firm capacity from 180 MW to 208 MW. The energy payments that Hawaiian Electric makes to Kalaeloa include: (1) a fuel component, with a fuel price adjustment based on the cost of low sulfur fuel oil, (2) a fuel additives cost component and (3) a non-fuel component, with an adjustment based on changes in the Gross National Product Implicit Price Deflator. The capacity payments that Hawaiian Electric makes to Kalaeloa are fixed in accordance with the PPA. Kalaeloa also has a steam delivery cogeneration contract with another customer, the term of which coincides with the PPA. The facility has been certified by the Federal Energy Regulatory Commission as a Qualifying Facility under the Public Utility Regulatory Policies Act of 1978. Hawaiian Electric and Kalaeloa are in negotiations to address the PPA term that ended on May 23, 2016. The PPA automatically extends on a month-to-month basis as long as the parties are still negotiating in good faith, but would end 60 days after either party notifies the other in writing that negotiations have terminated. Hawaiian Electric and Kalaeloa have agreed that neither party will terminate the PPA prior to October 31, 2018. AES Hawaii, Inc. Under a PPA entered into in March 1988, as amended (through Amendment No. 2) for a period of 30 years beginning September 1992, Hawaiian Electric agreed to purchase 180 MW of firm capacity from AES Hawaii. In August 2012, Hawaiian Electric filed an application with the PUC seeking an exemption from the PUC’s Competitive Bidding Framework to negotiate an amendment to the PPA to purchase 186 MW of firm capacity, and amend the energy pricing formula in the PPA. The PUC approved the exemption in April 2013, but Hawaiian Electric and AES Hawaii were not able to reach an agreement on the amendment. In June 2015, AES Hawaii filed an arbitration demand regarding a dispute about whether Hawaiian Electric was obligated to buy up to 9 MW of additional capacity based on a 1992 letter. Hawaiian Electric responded to the arbitration demand and in October 2015, AES Hawaii and Hawaiian Electric entered into a Settlement Agreement to stay the arbitration proceeding. The Settlement Agreement included certain conditions precedent which, if satisfied, would have released the parties from the claims under the arbitration proceeding. Among the conditions precedent was the successful negotiation and PUC approval of an amendment to the existing PPA. In November 2015, Hawaiian Electric entered into Amendment No. 3 for which PUC approval was requested and subsequently denied in January 2017. Approval of Amendment No. 3 would have satisfied the final condition for effectiveness of the Settlement Agreement and resolved AES Hawaii's claims. Following the PUC's decision, the parties agreed to extend the stay of the arbitration proceeding, while settlement discussions continue. Hu Honua Bioenergy, LLC. In May 2012, Hawaii Electric Light signed a PPA, which the PUC approved in December 2013, with Hu Honua Bioenergy, LLC (Hu Honua) for 21.5 MW of renewable, dispatchable firm capacity fueled by locally grown biomass from a facility on the island of Hawaii. Per the terms of the PPA, the Hu Honua plant was scheduled to be in service in 2016. However, Hu Honua encountered construction delays, failed to meet its obligations under the PPA and failed to provide adequate assurances that it could perform or had the financial means to perform. Hawaii Electric Light terminated the PPA on March 1, 2016. On November 30, 2016, Hu Honua filed a civil complaint in the United States District Court for the District of Hawaii that included claims purportedly arising out of the termination of Hu Honua’s PPA. On May 26, 2017, Hawaii Electric Light and Hu Honua entered into a settlement agreement that will settle all claims related to the termination of the original PPA. The settlement agreement was contingent on the PUC’s approval of an amended and restated PPA between Hawaii Electric Light and Hu Honua dated May 5, 2017. In July 2017, the PUC approved the amended and restated PPA. On August 25, 2017, the PUC’s approval was appealed by a third party. The appeal is still pending. Hu Honua is expected to be on-line by the end of 2018. Utility projects . Many public utility projects require PUC approval and various permits from other governmental agencies. Difficulties in obtaining, or the inability to obtain, the necessary approvals or permits can result in significantly increased project costs or even cancellation of projects. In the event a project does not proceed, or if it becomes probable the PUC will disallow cost recovery for all or part of a project, or if PUC imposed caps on project costs are expected to be exceeded, project costs may need to be written off in amounts that could result in significant reductions in Hawaiian Electric’s consolidated net income. Enterprise Resource Planning/Enterprise Asset Management (ERP/EAM) Implementation Project. On August 11, 2016, the PUC approved the Utilities’ request to commence the ERP/EAM Implementation Project, subject to certain conditions, including a $77.6 million cap on cost recovery as well as a requirement that the Utilities pass onto customers a minimum of $244 million in savings associated with the system over its 12 -year service life. The decision and order (D&O) approved the deferral of certain project costs and allowed the accrual of allowance for funds used during construction (AFUDC), but limited the AFUDC rate to 1.75% . Pursuant to the D&O and subsequent orders, in September 2017, the Utilities filed a bottom-up, low-level analysis of the project’s benefits and performance metrics and tracking mechanism for passing the project’s benefits on to customers. Monthly reports on the status and costs of the project continue to be filed. The ERP/EAM Implementation Project is on schedule. The project is expected to go live by October 1, 2018. As of September 30, 2017, the Project incurred costs of $23.6 million of which $4.6 million were charged to other operation and maintenance (O&M) expense, $1.4 million relate to capital costs and $17.6 million are deferred costs. Schofield Generating Station Project. In August 2012, the PUC approved a waiver from the competitive bidding framework to allow Hawaiian Electric to negotiate with the U.S. Army for the construction of a 50 MW utility owned and operated firm, renewable and dispatchable generation facility at Schofield Barracks. In September 2015, the PUC approved Hawaiian Electric’s application to expend $167 million for the project. In approving the project, the PUC placed a cost cap of $167 million for the project, stated 90% of the cap is allowed for cost recovery through cost recovery mechanisms other than base rates, and stated the $167 million cap will be adjusted downward due to any reduction in the cost of the engine contract due to a reduction in the foreign exchange rate. Hawaiian Electric was required to take all necessary steps to lock in the lowest possible exchange rate. On January 5, 2016, Hawaiian Electric executed window forward contracts, which lowered the cost of the engine contract by $9.7 million , resulting in a revised project cost cap of $157.3 million . Hawaiian Electric has received all of the major permits for the project, including a 35 year site lease from the U.S. Army. Construction of the facility began in October 2016, and the facility is expected to be placed in service in the second quarter of 2018. A request to recover the costs of the project and related operations and maintenance expense through the newly-established Major Project Interim Recovery (MPIR) adjustment mechanism is pending PUC approval. (See “Decoupling” section below for MPIR guidelines and capital cost recovery discussion.) Project costs incurred as of September 30, 2017 amounted to $105.7 million . West Loch PV Project. In July 2016, Hawaiian Electric announced plans to build, own and operate a utility-owned, grid-tied 20 -MW (ac) solar facility in conjunction with the Department of the Navy at a Navy/Air Force joint base. In June 2017, the PUC approved the expenditure of funds for the project, including Hawaiian Electric’s proposed project cost cap of $67 million and a performance guarantee to provide energy at 9.56 cents /KWH or less. Project costs incurred as of September 30, 2017 amounted to $0.7 million . In approving the project, the PUC agreed that the project is eligible for recovery of costs offset by related net benefits under the newly-established MPIR adjustment mechanism. (See “Decoupling” section below for MPIR guidelines and capital cost recovery discussion.) Hawaiian Electric provided supplemental materials in August 2017, as requested by the PUC, to support meeting the MPIR guidelines, accompanied by system performance guarantee and cost savings sharing mechanisms. Hawaiian Telcom . The Utilities each have separate agreements for the joint ownership and maintenance of utility poles with Hawaiian Telcom, Inc. (Hawaiian Telcom), the respective county or counties in which each utility operates and other third parties, such as the State of Hawaii. The agreements set forth various circumstances requiring pole removal/installation/replacement and the sharing of costs among the joint pole owners. The agreements allow for the cost of work done by one joint pole owner to be shared by the other joint pole owners based on the apportionment of costs in the agreements. The Utilities have maintained, replaced and installed the majority of the jointly-owned poles in each of the respective service territories, and have billed the other joint pole owners for their respective share of the costs. The counties and the State have been reimbursing the Utilities for their share of the costs. However, Hawaiian Telcom has been delinquent in reimbursing the Utilities for its share of the costs. Hawaiian Electric has initiated a dispute resolution process to collect the unpaid amounts from Hawaiian Telcom as specified by the joint pole agreement. This dispute resolution process is stayed pending settlement negotiations. For Hawaii Electric Light, the agreement does not specify an alternative dispute resolution process, and thus a complaint for payment was filed with the Circuit Court in June 2016. This complaint is stayed pending settlement negotiations. Maui Electric has not yet commenced any legal action to recover the delinquent amounts. The Utilities and Hawaiian Telcom have entered into a non-binding memorandum of understanding to endeavor to negotiate agreements, subject to PUC approval, for purchase by the Utilities of Hawaiian Telcom’s interest in all the joint poles, with payment of the purchase price of such interest in the poles to be offset in part by the receivables owed by Hawaiian Telcom to the Utilities. As of September 30, 2017 , total receivables under the joint pole agreement, including interest, from Hawaiian Telcom are $22.2 million ( $14.9 million at Hawaiian Electric, $6.0 million at Hawaii Electric Light, and $1.3 million at Maui Electric). Management expects to prevail on these claims but has reserved for the accrued interest of $4.9 million on the receivables. Environmental regulation . The Utilities are subject to environmental laws and regulations that regulate the operation of existing facilities, the construction and operation of new facilities and the proper cleanup and disposal of hazardous waste and toxic substances. Hawaiian Electric, Hawaii Electric Light and Maui Electric, like other utilities, periodically encounter petroleum or other chemical releases into the environment associated with current or previous operations. The Utilities report and take action on these releases when and as required by applicable law and regulations. The Utilities believe the costs of responding to such releases identified to date will not have a material effect, individually or in the aggregate, on Hawaiian Electric’s consolidated results of operations, financial condition or liquidity. Former Molokai Electric Company generation site . In 1989, Maui Electric acquired by merger Molokai Electric Company. Molokai Electric Company had sold its former generation site (Site) in 1983, but continued to operate at the Site under a lease until 1985. The Environmental Protection Agency (EPA) has since identified environmental impacts in the subsurface soil at the Site. Although Maui Electric never operated at the Site or owned the Site property, after discussions with the EPA and the Hawaii Department of Health (DOH), Maui Electric agreed to undertake additional investigations at the Site and an adjacent parcel that Molokai Electric Company had used for equipment storage (the Adjacent Parcel) to determine the extent of environmental contamination. A 2011 assessment by a Maui Electric contractor of the Adjacent Parcel identified environmental impacts, including elevated polychlorinated biphenyls (PCBs) in the subsurface soils. In cooperation with the DOH and EPA, Maui Electric is further investigating the Site and the Adjacent Parcel to determine the extent of impacts of PCBs, residual fuel oils and other subsurface contaminants. Maui Electric has a reserve balance of $3.1 million as of September 30, 2017 , representing the probable and reasonably estimated cost to complete the additional investigation and estimated cleanup costs at the Site and the Adjacent Parcel; however, final costs of remediation will depend on the results of continued investigation. Pearl Harbor sediment study . In July 2014, the U.S. Navy notified Hawaiian Electric of the Navy’s determination that Hawaiian Electric is a Potentially Responsible Party responsible for cleanup of PCB contamination in sediment in the area offshore of the Waiau Power Plant as part of the Pearl Harbor Superfund Site. The Navy has also requested that Hawaiian Electric reimburse the costs incurred by the Navy to investigate the area. The Navy has completed a remedial investigation and a feasibility study (FS) for the remediation of contaminated sediment at several locations in Pearl Harbor and issued its Final FS Report on June 29, 2015. On February 2, 2016, the Navy released the Proposed Plan for Pearl Harbor Sediment Remediation and Hawaiian Electric submitted comments. The extent of the contamination, the appropriate remedial measures to address it and Hawaiian Electric’s potential responsibility for any associated costs have not been determined. On March 23, 2015, Hawaiian Electric received a letter from the EPA requesting that Hawaiian Electric submit a work plan to assess potential sources and extent of PCB contamination onshore at the Waiau Power Plant. Hawaiian Electric submitted a sampling and analysis (SAP) work plan to the EPA and the DOH. Onshore sampling at the Waiau Power Plant was completed in two phases in December 2015 and June 2016. The extent of the onshore contamination, the appropriate remedial measures to address it and any associated costs have not yet been determined. As of September 30, 2017 , the reserve account balance recorded by Hawaiian Electric to address the PCB contamination was $4.9 million . The reserve represents the probable and reasonably estimable cost to complete the onshore and offshore investigations and the remediation of PCB contamination in the offshore sediment. The final remediation costs will depend on the results of the onshore investigation and assessment of potential source control requirements, as well as the further investigation of contaminated sediment offshore from the Waiau Power Plant. Asset retirement obligations . The Utilities recorded Asset Retirement Obligations (AROs) related to removing retired generating units at Hawaiian Electric’s Honolulu and Waiau power plants and removing certain types of transformers. The transformer removal projects are on-going. The retired generating unit removal projects are expected to be completed by the end of 2017 , and the related AROs have been reassessed. Hawaiian Electric has determined that the AROs for the retired generating units should be minimal, and thus $24.4 million of the remaining AROs related to those projects were reversed in the third quarter of 2017 to reflect the revision in estimated cash flows (with no impact on the Utilities’ net income). The ARO balances as of September 30, 2017 and 2016 , amounted to $0.7 million and $26.2 million , respectively. Regulatory proceedings Decoupling . Decoupling is a regulatory model that is intended to facilitate meeting the State of Hawaii’s goals to transition to a clean energy economy and achieve an aggressive renewable portfolio standard. The decoupling model implemented in Hawaii delinks revenues from sales and includes annual rate adjustments. The decoupling mechanism has three components: (1) a sales decoupling component via a revenue balancing account (RBA), (2) a revenue escalation component via a rate adjustment mechanism (RAM) and (3) an earnings sharing mechanism, which would provide for a reduction of revenues between rate cases in the event the utility exceeds the return on average common equity (ROACE) allowed in its most recent rate case. Decoupling provides for more timely cost recovery and earning on investments. For the RAM years 2014 - 2016, Hawaiian Electric was allowed to record RAM revenue beginning on January 1 and to bill such amounts from June 1 of the applicable year through May 31 of the following year. Subsequent to 2016, Hawaiian Electric reverted to the RAM provisions initially approved in March 2011—i.e., RAM is both accrued and billed from June 1 of each year through May 31 of the following year. 2015 decoupling order . On March 31, 2015, the PUC issued an Order (the 2015 Decoupling Order) that modified the RAM portion of the decoupling mechanism to be capped at the lesser of the RAM revenue adjustment as then determined (based on an inflationary adjustment for certain O&M expenses and return on investment for certain rate base changes) and a RAM revenue adjustment calculated based on the cumulative annual compounded increase in Gross Domestic Product Price Index applied to annualized target revenues (the RAM Cap). The 2015 Decoupling Order provided a specific basis for calculating the target revenues until the next rate case, at which time the target revenues will reset upon the issuance of an interim or final D&O in a rate case. The triennial rate case cycle required under the decoupling mechanism continues to serve as the maximum period between the filing of general rate cases. The RAM Cap impacted the Utilities' recovery of capital investments as follows: • Hawaiian Electric's RAM revenues were limited to the RAM Cap in 2015, 2016 and 2017. • Maui Electric's RAM revenues were limited to the RAM Cap in 2015 and 2016; however, the 2017 RAM revenues were below the RAM Cap. • Hawaii Electric Light’s RAM revenues were below the RAM Cap in 2015, 2016 and 2017. 2017 decoupling order . On April 27, 2017, the PUC issued an Order (the 2017 Decoupling Order) that requires the establishment of specific performance incentive mechanisms and provides guidelines for interim recovery of revenues to support major projects placed in service between general rate cases. In May 2017, the Utilities filed their proposed initial tariffs to implement conventional stand-alone performance incentive mechanisms, namely for: • Service Reliability Performance measured by System Average Interruption Duration and Frequency Indexes (penalties only). Target performance is based on each utility’s historical 10 -year average performance with a deadband of one standard deviation. The maximum penalty for each performance index is 20 basis points applied to the common equity share of each respective utility’s rate base (or approximately $6 million penalty for both in total for the three utilities). • Call Center Performance measured by the percentage of calls answered within 30 seconds. Target performance is based on the annual average performance for each utility for the most recent 8 quarters with a deadband of 3% above and below the target. The maximum penalty or incentive is 8 basis points applied to the common equity share of each respective utility’s rate base (or approximately $1.2 million penalty or incentive in total for the three utilities). The 2017 Decoupling Order also established guidelines for MPIR. Projects eligible for recovery through the MPIR adjustment mechanism are major projects (i.e., projects with capital expenditures net of customer contributions in excess of $2.5 million ), including but not restricted to renewable energy, energy efficiency, utility scale generation, grid modernization and smaller qualifying projects grouped into programs for review. The MPIR adjustment mechanism provides the opportunity to recover revenues for net costs of approved eligible projects placed in service between general rate cases wherein cost recovery is limited by a revenue cap and is not provided by other effective recovery mechanisms. The request for PUC approval must include a business case and all costs that are allowed to be recovered through the MPIR adjustment mechanism shall be offset by any related benefits. The guidelines provide for accrual of revenues approved for recovery upon in-service date to be collected from customers through the annual RBA tariff. Capital projects which are not recovered through the MPIR would be included in the RAM and be subject to the RAM cap, until the next rate case when the utilities would request recovery in base rates. In the 2017 Decoupling Order, the PUC indicated that in pending and subsequent rate cases, the PUC intends to require all fuel expenses and purchased energy expenses be recovered through an appropriately modified energy cost adjustment mechanism rather than through base rates, and will consider adopting processes to periodically reset fuel efficiency measures embedded in the energy cost adjustment mechanism to account for changes in the generating system. Annual decoupling filings . On March 31, 2017, the Utilities submitted to the PUC, their annual decoupling filings. Maui Electric amended its annual decoupling filing on May 22, 2017, to update and revise certain cost information. On May 31, 2017, the PUC approved the annual decoupling filings for tariffed rates that will be effective from June 1, 2017 through May 31, 2018. The net annual incremental amounts to be collected (refunded) are as follows: ($ in millions) Hawaiian Electric Hawaii Electric Light Maui Electric 2017 Annual incremental RAM adjusted revenues $ 12.7 $ 3.2 $ 1.6 Annual change in accrued earnings sharing credits $ — $ — $ — Annual change in accrued RBA balance as of December 31, 2016 (and associated revenue taxes) (refunded) $ (2.4 ) $ (2.5 ) $ (0.2 ) Net annual incremental amount to be collected under the tariffs $ 10.3 $ 0.7 $ 1.4 Most recent rate proceedings. Hawaiian Electric consolidated 2014 test year abbreviated and 2017 test year rate cases . On December 16, 2016, Hawaiian Electric filed an application with the PUC for a general rate increase of $106.4 million over revenues at current effective rates (for a 6.9% increase in revenues), based on a 2017 test year and an 8.28% rate of return (which incorporates a ROACE of 10.6% and a capital structure that includes a 57.4% common equity capitalization) on a $2.0 billion rate base. The requested increase is primarily to pay for operating costs and for system upgrades to increase reliability, improve customer service and integrate more renewable energy. In its application, Hawaiian Electric is also proposing implementation of performance based regulation (PBR) mechanisms related to its performance in the areas of customer service, reliability and communication relating to the private rooftop solar interconnection process. Hawaiian Electric proposed an expansion of the range of fuel usage efficiencies under which fuel costs would be fully passed through to customers, and an additional trigger that would allow a re-establishment of fuel usage efficiency targets under certain conditions. On December 23, 2016, the PUC issued an order consolidating the Hawaiian Electric filings for the 2014 test year abbreviated rate case and the 2017 test year rate case. The order also found and concluded that Hawaiian Electric's abbreviated 2014 rate case filing did not comply with: (1) the Mandatory Triennial Rate Case Cycle requirement in the decoupling order that Hawaiian Electric file an application for a general rate case every three years and (2) the requirement that Hawaiian Electric file its 2014 calendar test year rate case application by June 27, 2014. The order then stated that: “[T]he determinatio

Bank segment

Bank segment	9 Months Ended
	Sep. 30, 2017
Bank Subsidiary [Abstract]
Bank segment	Bank segment Selected financial information American Savings Bank, F.S.B. Statements of Income Data Three months ended September 30 Nine months ended September 30 (in thousands) 2017 2016 2017 2016 Interest and dividend income Interest and fees on loans $ 52,210 $ 50,444 $ 155,269 $ 148,571 Interest and dividends on investment securities 6,850 4,759 20,593 14,219 Total interest and dividend income 59,060 55,203 175,862 162,790 Interest expense Interest on deposit liabilities 2,444 1,871 6,858 5,154 Interest on other borrowings 470 1,464 2,110 4,416 Total interest expense 2,914 3,335 8,968 9,570 Net interest income 56,146 51,868 166,894 153,220 Provision for loan losses 490 5,747 7,231 15,266 Net interest income after provision for loan losses 55,656 46,121 159,663 137,954 Noninterest income Fees from other financial services 5,635 5,599 17,055 16,799 Fee income on deposit liabilities 5,533 5,627 16,526 16,045 Fee income on other financial products 1,904 2,151 5,741 6,563 Bank-owned life insurance 1,257 1,616 4,165 3,620 Mortgage banking income 520 2,347 1,896 5,096 Gains on sale of investment securities, net — — — 598 Other income, net 380 1,165 1,229 1,786 Total noninterest income 15,229 18,505 46,612 50,507 Noninterest expense Compensation and employee benefits 23,724 22,844 71,703 67,197 Occupancy 4,284 3,991 12,623 12,244 Data processing 3,262 3,150 9,749 9,599 Services 2,863 2,427 7,989 8,093 Equipment 1,814 1,759 5,333 5,193 Office supplies, printing and postage 1,444 1,483 4,506 4,431 Marketing 934 747 2,290 2,507 FDIC insurance 746 907 2,296 2,704 Other expense 5,050 4,591 14,066 13,948 Total noninterest expense 44,121 41,899 130,555 125,916 Income before income taxes 26,764 22,727 75,720 62,545 Income taxes 9,172 7,623 25,582 21,483 Net income $ 17,592 $ 15,104 $ 50,138 $ 41,062 American Savings Bank, F.S.B. Statements of Comprehensive Income Data Three months ended September 30 Nine months ended September 30 (in thousands) 2017 2016 2017 2016 Net income $ 17,592 $ 15,104 $ 50,138 $ 41,062 Other comprehensive income (loss), net of taxes: Net unrealized gains (losses) on available-for-sale investment securities: Net unrealized gains (losses) on available-for-sale investment securities arising during the period, net of (taxes) benefits of $(137), $1,417, $(1,619) and $(5,413), respectively 208 (2,147 ) 2,452 8,197 Reclassification adjustment for net realized gains included in net income, net of taxes of nil, nil, nil and $238, respectively — — — (360 ) 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 of $138, $144, $675 and $421, respectively 209 219 1,023 638 Other comprehensive income (loss), net of taxes 417 (1,928 ) 3,475 8,475 Comprehensive income $ 18,009 $ 13,176 $ 53,613 $ 49,537 American Savings Bank, F.S.B. Balance Sheets Data (in thousands) September 30, 2017 December 31, 2016 Assets Cash and due from banks $ 120,492 $ 137,083 Interest-bearing deposits 69,223 52,128 Restricted cash — 1,764 Available-for-sale investment securities, at fair value 1,320,110 1,105,182 Stock in Federal Home Loan Bank, at cost 9,706 11,218 Loans receivable held for investment 4,676,281 4,738,693 Allowance for loan losses (53,047 ) (55,533 ) Net loans 4,623,234 4,683,160 Loans held for sale, at lower of cost or fair value 15,728 18,817 Other 378,224 329,815 Goodwill 82,190 82,190 Total assets $ 6,618,907 $ 6,421,357 Liabilities and shareholder’s equity Deposit liabilities—noninterest-bearing $ 1,710,698 $ 1,639,051 Deposit liabilities—interest-bearing 4,041,628 3,909,878 Other borrowings 153,552 192,618 Other 107,558 101,635 Total liabilities 6,013,436 5,843,182 Commitments and contingencies Common stock 1 1 Additional paid in capital 344,512 342,704 Retained earnings 279,956 257,943 Accumulated other comprehensive loss, net of tax benefits Net unrealized losses on securities $ (5,479 ) $ (7,931 ) Retirement benefit plans (13,519 ) (18,998 ) (14,542 ) (22,473 ) Total shareholder’s equity 605,471 578,175 Total liabilities and shareholder’s equity $ 6,618,907 $ 6,421,357 Other assets Bank-owned life insurance $ 147,391 $ 143,197 Premises and equipment, net 123,326 90,570 Prepaid expenses 5,356 3,348 Accrued interest receivable 17,488 16,824 Mortgage-servicing rights 9,070 9,373 Low-income housing equity investments 54,515 47,081 Real estate acquired in settlement of loans, net 1,183 1,189 Other 19,895 18,233 $ 378,224 $ 329,815 Other liabilities Accrued expenses $ 41,698 $ 36,754 Federal and state income taxes payable 6,829 4,728 Cashier’s checks 27,448 24,156 Advance payments by borrowers 4,867 10,335 Other 26,716 25,662 $ 107,558 $ 101,635 Bank-owned life insurance is life insurance purchased by ASB on the lives of certain key employees, with ASB as the beneficiary. The insurance is used to fund employee benefits through tax-free income from increases in the cash value of the policies and insurance proceeds paid to ASB upon an insured’s death. Other borrowings consisted of securities sold under agreements to repurchase and advances from the Federal Home Loan Bank (FHLB) of $104 million and $50 million , respectively, as of September 30, 2017 and $93 million and $100 million , respectively, as of December 31, 2016 . Available-for-sale investment securities. The major components of investment securities were as follows: Amortized cost Gross unrealized gains Gross unrealized losses Estimated fair value Gross unrealized losses Less than 12 months 12 months or longer (dollars in thousands) Number of issues Fair value Amount Number of issues Fair value Amount September 30, 2017 Available-for-sale U.S. Treasury and federal agency obligations $ 182,535 $ 882 $ (1,299 ) $ 182,118 15 $ 91,203 $ (1,064 ) 2 $ 13,072 $ (235 ) Mortgage-related securities- FNMA, FHLMC and GNMA 1,131,245 2,127 (10,807 ) 1,122,565 84 686,186 (7,709 ) 29 138,051 (3,098 ) Mortgage revenue bond 15,427 — — 15,427 — — — — — — $ 1,329,207 $ 3,009 $ (12,106 ) $ 1,320,110 99 $ 777,389 $ (8,773 ) 31 $ 151,123 $ (3,333 ) December 31, 2016 Available-for-sale U.S. Treasury and federal agency obligations $ 193,515 $ 920 $ (2,154 ) $ 192,281 18 $ 123,475 $ (2,010 ) 1 $ 3,485 $ (144 ) Mortgage-related securities- FNMA, FHLMC and GNMA 909,408 1,742 (13,676 ) 897,474 88 709,655 (12,143 ) 13 47,485 (1,533 ) Mortgage revenue bond 15,427 — — 15,427 — — — — — — $ 1,118,350 $ 2,662 $ (15,830 ) $ 1,105,182 106 $ 833,130 $ (14,153 ) 14 $ 50,970 $ (1,677 ) ASB does not believe that the investment securities that were in an unrealized loss position at September 30, 2017 , represent an other-than-temporary impairment (OTTI). Total gross unrealized losses were primarily attributable to rising interest rates relative to when the investment securities were purchased and not due to the credit quality of the investment securities. The contractual cash flows of the U.S. Treasury, federal agency obligations and mortgage-related securities are backed by the full faith and credit guaranty of the United States government or an agency of the government. ASB does not intend to sell the securities before the recovery of its amortized cost basis and there have been no adverse changes in the timing of the contractual cash flows for the securities. ASB did not recognize OTTI for the quarters and nine month periods ended September 30, 2017 and 2016. U.S. Treasury, federal agency obligations, and the mortgage revenue bond have contractual terms to maturity. Mortgage-related securities have contractual terms to maturity, but require periodic payments to reduce principal. In addition, expected maturities will differ from contractual maturities because borrowers have the right to prepay the underlying mortgages. The contractual maturities of available-for-sale investment securities were as follows: September 30, 2017 Amortized cost Fair value (in thousands) Due in one year or less $ 9,998 $ 9,999 Due after one year through five years 77,138 77,331 Due after five years through ten years 81,464 81,170 Due after ten years 29,362 29,045 197,962 197,545 Mortgage-related securities-FNMA, FHLMC and GNMA 1,131,245 1,122,565 Total available-for-sale securities $ 1,329,207 $ 1,320,110 Proceeds from the sale of available-for-sale securities were nil for both the three month periods ended September 30, 2017 and 2016 and nil and $16.4 million for the nine months ended September 30, 2017 and 2016, respectively. Gross realized gains were nil for both the three month periods ended September 30, 2017 and 2016, and nil and $0.6 million for the nine months ended September 30, 2017 and 2016, respectively. Gross realized losses were nil or not material for all periods presented. Loans receivable. The components of loans receivable were summarized as follows: September 30, 2017 December 31, 2016 (in thousands) Real estate: Residential 1-4 family $ 2,066,023 $ 2,048,051 Commercial real estate 745,583 800,395 Home equity line of credit 905,249 863,163 Residential land 18,611 18,889 Commercial construction 128,407 126,768 Residential construction 13,031 16,080 Total real estate 3,876,904 3,873,346 Commercial 589,669 692,051 Consumer 211,571 178,222 Total loans 4,678,144 4,743,619 Less: Deferred fees and discounts (1,863 ) (4,926 ) Allowance for loan losses (53,047 ) (55,533 ) Total loans, net $ 4,623,234 $ 4,683,160 ASB's policy is to require private mortgage insurance on all real estate loans when the loan-to-value ratio of the property exceeds 80% of the lower of the appraised value or purchase price at origination. For non-owner occupied residential properties, the loan-to-value ratio may not exceed 80% of the lower of the appraised value or purchase price at origination. ASB is subject to the risk that the insurance company cannot satisfy the bank's claim on policies. Allowance for loan losses. The allowance for loan losses (balances and changes) and financing receivables were as follows: (in thousands) Residential 1-4 family Commercial real estate Home Residential land Commercial construction Residential construction Commercial loans Consumer loans Unallo-cated Total Three months ended September 30, 2017 Allowance for loan losses: Beginning balance $ 3,130 $ 18,840 $ 5,527 $ 1,264 $ 4,706 $ 9 $ 14,552 $ 8,328 $ — $ 56,356 Charge-offs (522 ) — — — — — (1,215 ) (3,160 ) — (4,897 ) Recoveries 33 — 164 259 — — 326 316 — 1,098 Provision 347 (2,800 ) (36 ) (141 ) 370 2 (595 ) 3,343 — 490 Ending balance $ 2,988 $ 16,040 $ 5,655 $ 1,382 $ 5,076 $ 11 $ 13,068 $ 8,827 $ — $ 53,047 Three months ended September 30, 2016 Allowance for loan losses: Beginning balance $ 4,384 $ 13,561 $ 7,836 $ 1,689 $ 6,993 $ 12 $ 17,085 $ 3,771 $ — $ 55,331 Charge-offs (373 ) — (108 ) — — — (833 ) (1,879 ) — (3,193 ) Recoveries 92 — 15 187 — — 347 211 — 852 Provision 154 1,289 (248 ) 23 179 (2 ) 2,457 1,895 — 5,747 Ending balance $ 4,257 $ 14,850 $ 7,495 $ 1,899 $ 7,172 $ 10 $ 19,056 $ 3,998 $ — $ 58,737 Nine months ended September 30, 2017 Allowance for loan losses: Beginning balance $ 2,873 $ 16,004 $ 5,039 $ 1,738 $ 6,449 $ 12 $ 16,618 $ 6,800 $ — $ 55,533 Charge-offs (528 ) — (14 ) (92 ) — — (3,477 ) (8,360 ) — (12,471 ) Recoveries 91 — 294 477 — — 922 970 — 2,754 Provision 552 36 336 (741 ) (1,373 ) (1 ) (995 ) 9,417 — 7,231 Ending balance $ 2,988 $ 16,040 $ 5,655 $ 1,382 $ 5,076 $ 11 $ 13,068 $ 8,827 $ — $ 53,047 September 30, 2017 Ending balance: individually evaluated for impairment $ 1,317 $ 72 $ 409 $ 373 $ — $ — $ 667 $ 30 $ 2,868 Ending balance: collectively evaluated for impairment $ 1,671 $ 15,968 $ 5,246 $ 1,009 $ 5,076 $ 11 $ 12,401 $ 8,797 $ — $ 50,179 Financing Receivables: Ending balance $ 2,066,023 $ 745,583 $ 905,249 $ 18,611 $ 128,407 $ 13,031 $ 589,669 $ 211,571 $ 4,678,144 Ending balance: individually evaluated for impairment $ 19,757 $ 1,281 $ 7,078 $ 2,385 $ — $ — $ 5,486 $ 67 $ 36,054 Ending balance: collectively evaluated for impairment $ 2,046,266 $ 744,302 $ 898,171 $ 16,226 $ 128,407 $ 13,031 $ 584,183 $ 211,504 $ 4,642,090 Nine months ended September 30, 2016 Allowance for loan losses: Beginning balance $ 4,186 $ 11,342 $ 7,260 $ 1,671 $ 4,461 $ 13 $ 17,208 $ 3,897 $ — $ 50,038 Charge-offs (433 ) — (108 ) — — — (3,138 ) (4,977 ) — (8,656 ) Recoveries 144 — 46 306 — — 907 686 — 2,089 Provision 360 3,508 297 (78 ) 2,711 (3 ) 4,079 4,392 — 15,266 Ending balance $ 4,257 $ 14,850 $ 7,495 $ 1,899 $ 7,172 $ 10 $ 19,056 $ 3,998 $ — $ 58,737 December 31, 2016 Ending balance: individually evaluated for impairment $ 1,352 $ 80 $ 215 $ 789 $ — $ — $ 1,641 $ 6 $ 4,083 Ending balance: collectively evaluated for impairment $ 1,521 $ 15,924 $ 4,824 $ 949 $ 6,449 $ 12 $ 14,977 $ 6,794 $ — $ 51,450 Financing Receivables: Ending balance $ 2,048,051 $ 800,395 $ 863,163 $ 18,889 $ 126,768 $ 16,080 $ 692,051 $ 178,222 $ 4,743,619 Ending balance: individually evaluated for impairment $ 19,854 $ 1,569 $ 6,158 $ 3,629 $ — $ — $ 20,539 $ 10 $ 51,759 Ending balance: collectively evaluated for impairment $ 2,028,197 $ 798,826 $ 857,005 $ 15,260 $ 126,768 $ 16,080 $ 671,512 $ 178,212 $ 4,691,860 Credit quality . ASB performs an internal loan review and grading on an ongoing basis. The review provides management with periodic information as to the quality of the loan portfolio and effectiveness of its lending policies and procedures. The objectives of the loan review and grading procedures are to identify, in a timely manner, existing or emerging credit trends so that appropriate steps can be initiated to manage risk and avoid or minimize future losses. Loans subject to grading include commercial, commercial real estate and commercial construction loans. Each loan is assigned an Asset Quality Rating (AQR) reflecting the likelihood of repayment or orderly liquidation of that loan transaction pursuant to regulatory credit classifications: Pass, Special Mention, Substandard, Doubtful and Loss. The AQR is a function of the probability of default model rating, the loss given default and possible non-model factors which impact the ultimate collectability of the loan such as character of the business owner/guarantor, interim period performance, litigation, tax liens and major changes in business and economic conditions. Pass exposures generally are well protected by the current net worth and paying capacity of the obligor or by the value of the asset or underlying collateral. Special Mention loans have potential weaknesses that, if left uncorrected, could jeopardize the liquidation of the debt. Substandard loans have well-defined weaknesses that jeopardize the liquidation of the debt and are characterized by the distinct possibility that the Bank may sustain some loss. An asset classified Doubtful has the weaknesses of those classified Substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. An asset classified Loss is considered uncollectible and has such little value that its continuance as a bankable asset is not warranted. The credit risk profile by internally assigned grade for loans was as follows: September 30, 2017 December 31, 2016 (in thousands) Commercial real estate Commercial construction Commercial Commercial real estate Commercial construction Commercial Grade: Pass $ 647,599 $ 103,892 $ 539,336 $ 701,657 $ 102,955 $ 614,139 Special mention 44,088 22,500 25,053 65,541 — 25,229 Substandard 53,896 2,015 23,130 33,197 23,813 52,683 Doubtful — — 2,150 — — — Loss — — — — — — Total $ 745,583 $ 128,407 $ 589,669 $ 800,395 $ 126,768 $ 692,051 The credit risk profile based on payment activity for loans was as follows: (in thousands) 30-59 days past due 60-89 days past due Greater than 90 days Total past due Current Total financing receivables Recorded investment> 90 days and accruing September 30, 2017 Real estate: Residential 1-4 family $ 3,905 $ 1,513 $ 4,452 $ 9,870 $ 2,056,153 $ 2,066,023 $ — Commercial real estate 5,414 — — 5,414 740,169 745,583 — Home equity line of credit 1,936 177 1,367 3,480 901,769 905,249 — Residential land 498 984 497 1,979 16,632 18,611 — Commercial construction — — — — 128,407 128,407 — Residential construction — — — — 13,031 13,031 — Commercial 1,095 218 648 1,961 587,708 589,669 — Consumer 2,508 1,465 1,178 5,151 206,420 211,571 — Total loans $ 15,356 $ 4,357 $ 8,142 $ 27,855 $ 4,650,289 $ 4,678,144 $ — December 31, 2016 Real estate: Residential 1-4 family $ 5,467 $ 2,338 $ 3,505 $ 11,310 $ 2,036,741 $ 2,048,051 $ — Commercial real estate 2,416 — — 2,416 797,979 800,395 — Home equity line of credit 1,263 381 1,342 2,986 860,177 863,163 — Residential land — — 255 255 18,634 18,889 — Commercial construction — — — — 126,768 126,768 — Residential construction — — — — 16,080 16,080 — Commercial 413 510 1,303 2,226 689,825 692,051 — Consumer 1,945 1,001 963 3,909 174,313 178,222 — Total loans $ 11,504 $ 4,230 $ 7,368 $ 23,102 $ 4,720,517 $ 4,743,619 $ — The credit risk profile based on nonaccrual loans, accruing loans 90 days or more past due and TDR loans was as follows: (in thousands) September 30, 2017 December 31, 2016 Real estate: Residential 1-4 family $ 12,853 $ 11,154 Commercial real estate — 223 Home equity line of credit 4,000 3,080 Residential land 1,022 878 Commercial construction — — Residential construction — — Commercial 3,691 6,708 Consumer 1,791 1,282 Total nonaccrual loans $ 23,357 $ 23,325 Real estate: Residential 1-4 family $ — $ — Commercial real estate — — Home equity line of credit — — Residential land — — Commercial construction — — Residential construction — — Commercial — — Consumer — — Total accruing loans 90 days or more past due $ — $ — Real estate: Residential 1-4 family $ 11,592 $ 14,450 Commercial real estate 1,281 1,346 Home equity line of credit 5,250 4,934 Residential land 1,555 2,751 Commercial construction — — Residential construction — — Commercial 2,052 14,146 Consumer 67 10 Total troubled debt restructured loans not included above $ 21,797 $ 37,637 The total carrying amount and the total unpaid principal balance of impaired loans were as follows: September 30, 2017 Three months ended September 30, 2017 Nine months ended September 30, 2017 (in thousands) Recorded investment Unpaid principal balance Related Allowance Average recorded investment Interest income recognized* Average recorded investment Interest income recognized* With no related allowance recorded Real estate: Residential 1-4 family $ 9,987 $ 10,541 $ — $ 9,650 $ 70 $ 9,503 $ 230 Commercial real estate — — — — — 121 11 Home equity line of credit 1,565 1,889 — 1,918 32 2,108 97 Residential land 1,134 1,425 — 1,209 73 1,080 107 Commercial construction — — — — — — — Residential construction — — — — — — — Commercial 2,901 6,257 — 1,808 29 2,888 37 Consumer — — — — — — — $ 15,587 $ 20,112 $ — $ 14,585 $ 204 $ 15,700 $ 482 With an allowance recorded Real estate: Residential 1-4 family $ 9,770 $ 9,972 $ 1,317 $ 9,788 $ 97 $ 9,963 $ 333 Commercial real estate 1,281 1,281 72 1,284 13 1,292 41 Home equity line of credit 5,513 5,543 409 5,076 68 4,670 164 Residential land 1,251 1,251 373 1,251 12 1,620 73 Commercial construction — — — — — — — Residential construction — — — — — — — Commercial 2,585 2,595 667 2,482 225 4,104 694 Consumer 67 67 30 67 1 55 2 $ 20,467 $ 20,709 $ 2,868 $ 19,948 $ 416 $ 21,704 $ 1,307 Total Real estate: Residential 1-4 family $ 19,757 $ 20,513 $ 1,317 $ 19,438 $ 167 $ 19,466 $ 563 Commercial real estate 1,281 1,281 72 1,284 13 1,413 52 Home equity line of credit 7,078 7,432 409 6,994 100 6,778 261 Residential land 2,385 2,676 373 2,460 85 2,700 180 Commercial construction — — — — — — — Residential construction — — — — — — — Commercial 5,486 8,852 667 4,290 254 6,992 731 Consumer 67 67 30 67 1 55 2 $ 36,054 $ 40,821 $ 2,868 $ 34,533 $ 620 $ 37,404 $ 1,789 December 31, 2016 Three months ended September 30, 2016 Nine months ended September 30, 2016 (in thousands) Recorded investment Unpaid principal balance Related allowance Average recorded investment Interest income recognized* Average recorded investment Interest income recognized* With no related allowance recorded Real estate: Residential 1-4 family $ 9,571 $ 10,400 $ — $ 10,069 $ 65 $ 10,378 $ 268 Commercial real estate 223 228 — 1,206 — 1,177 — Home equity line of credit 1,500 1,900 — 1,220 6 1,035 15 Residential land 1,218 1,803 — 1,521 16 1,532 47 Commercial construction — — — — — — — Residential construction — — — — — — — Commercial 6,299 8,869 — 14,352 141 9,240 154 Consumer — — — 10 — 3 — $ 18,811 $ 23,200 $ — $ 28,378 $ 228 $ 23,365 $ 484 With an allowance recorded Real estate: Residential 1-4 family $ 10,283 $ 10,486 $ 1,352 $ 11,800 $ 119 $ 11,933 $ 356 Commercial real estate 1,346 1,346 80 2,444 — 1,939 — Home equity line of credit 4,658 4,712 215 4,165 36 3,470 91 Residential land 2,411 2,411 789 2,915 44 3,090 165 Commercial construction — — — — — — — Residential construction — — — — — — — Commercial 14,240 14,240 1,641 11,433 65 15,075 275 Consumer 10 10 6 11 — 12 — $ 32,948 $ 33,205 $ 4,083 $ 32,768 $ 264 $ 35,519 $ 887 Total Real estate: Residential 1-4 family $ 19,854 $ 20,886 $ 1,352 $ 21,869 $ 184 $ 22,311 $ 624 Commercial real estate 1,569 1,574 80 3,650 — 3,116 — Home equity line of credit 6,158 6,612 215 5,385 42 4,505 106 Residential land 3,629 4,214 789 4,436 60 4,622 212 Commercial construction — — — — — — — Residential construction — — — — — — — Commercial 20,539 23,109 1,641 25,785 206 24,315 429 Consumer 10 10 6 21 — 15 — $ 51,759 $ 56,405 $ 4,083 $ 61,146 $ 492 $ 58,884 $ 1,371 * Since loan was classified as impaired. Troubled debt restructurings. A loan modification is deemed to be a troubled debt restructuring (TDR) when ASB grants a concession it would not otherwise consider were it not for the borrower’s financial difficulty. When a borrower experiencing financial difficulty fails to make a required payment on a loan or is in imminent default, ASB takes a number of steps to improve the collectibility of the loan and maximize the likelihood of full repayment. At times, ASB may modify or restructure a loan to help a distressed borrower improve its financial position to eventually be able to fully repay the loan, provided the borrower has demonstrated both the willingness and the ability to fulfill the modified terms. TDR loans are considered an alternative to foreclosure or liquidation with the goal of minimizing losses to ASB and maximizing recovery. ASB may consider various types of concessions in granting a TDR including maturity date extensions, extended amortization of principal, temporary deferral of principal payments and temporary interest rate reductions. ASB rarely grants principal forgiveness in its TDR modifications. Residential loan modifications generally involve interest rate reduction, extending the amortization period, or capitalizing certain delinquent amounts owed not to exceed the original loan balance. Land loans at origination are typically structured as a three -year term, interest-only monthly payment with a balloon payment due at maturity. Land loan TDR modifications typically involve extending the maturity date up to five years and converting the payments from interest-only to principal and interest monthly, at the same or higher interest rate. Commercial loan modifications generally involve extensions of maturity dates, extending the amortization period and temporary deferral or reduction of principal payments. ASB generally does not reduce the interest rate on commercial loan TDR modifications. Occasionally, additional collateral and/or guaranties are obtained. All TDR loans are classified as impaired and are segregated and reviewed separately when assessing the adequacy of the allowance for loan losses based on the appropriate method of measuring impairment: (1) present value of expected future cash flows discounted at the loan’s effective original contractual rate, (2) fair value of collateral less cost to sell or (3) observable market price. The financial impact of the calculated impairment amount is an increase to the allowance associated with the modified loan. When available information confirms that specific loans or portions thereof are uncollectible (confirmed losses), these amounts are charged off against the allowance for loan losses. Loan modifications that occurred during the third quarters and first nine months of 2017 and 2016 and the impact on the allowance for loan losses were as follows: Three months ended September 30, 2017 Nine months ended September 30, 2017 Number of contracts Outstanding recorded investment 1 Net increase in allowance Number of contracts Outstanding recorded investment 1 Net increase in allowance (dollars in thousands) Pre-modification Post-modification (as of period end) Pre-modification Post-modification (as of period end) Troubled debt restructurings Real estate: Residential 1-4 family 2 $ 83 $ 83 $ — 7 $ 955 $ 963 $ 45 Commercial real estate — — — — — — — — Home equity line of credit 15 862 862 184 28 1,386 1,372 277 Residential land — — — — — — — — Commercial construction — — — — — — — — Residential construction — — — — — — — — Commercial 1 330 330 38 2 672 672 38 Consumer — — — — 1 59 59 27 18 $ 1,275 $ 1,275 $ 222 38 $ 3,072 $ 3,066 $ 387 Three months ended September 30, 2016 Nine months ended September 30, 2016 Number of contracts Outstanding recorded 1 Net increase in allowance Number of contracts Outstanding recorded 1 Net increase in allowance (dollars in thousands) Pre-modification Post-modification (as of period end) Pre-modification Post-modification (as of period end) Troubled debt restructurings Real estate: Residential 1-4 family 2 $ 251 $ 251 $ 46 11 $ 2,239 $ 2,351 $ 305 Commercial real estate — — — — — — — — Home equity line of credit 12 1,268 1,268 237 30 2,705 2,705 492 Residential land — — — — 1 120 121 — Commercial construction — — — — — — — — Residential construction — — — — — — — — Commercial 6 3,462 3,462 53 14 20,119 20,119 723 Consumer — — — — — — — — 20 $ 4,981 $ 4,981 $ 336 56 $ 25,183 $ 25,296 $ 1,520 1 The reported balances include loans that became TDR during the period, and were fully paid-off, charged-off, or sold prior to period end. Loans modified in TDRs that experienced a payment default of 90 days or more during the third quarters and first nine months of 2017 and 2016, and for which the payment of default occurred within one year of the modification, were as follows: Three months ended September 30, 2017 Nine months ended September 30, 2017 (dollars in thousands) Number of contracts Recorded investment Number of contracts Recorded investment Troubled debt restructurings that subsequently defaulted Real estate: Residential 1-4 family — $ — 1 $ 222 Commercial real estate — — — — Home equity line of credit — — — — Residential land — — — — Commercial construction — — — — Residential construction — — — — Commercial — — — — Consumer — — — — — $ — 1 $ 222 Three months ended September 30, 2016 Nine months ended September 30, 2016 (dollars in thousands) Number of contracts Recorded investment Number of contracts Recorded investment Troubled debt restructurings that Real estate: Residential 1-4 family 1 $ 239 1 $ 239 Commercial real estate — — — — Home equity line of credit — — — — Residential land — — — — Commercial construction — — — — Residential construction — — — — Commercial — — 1 25 Consumer — — — — 1 $ 239 2 $ 264 If loans modified in a TDR subsequently default, ASB evaluates the loan for further impairment. Based on its evaluation, adjustments may be made in the allocation of the allowance or partial charge-offs may be taken to further write-down the carrying value of the loan. Commitments to lend additional funds to borrowers whose loan terms have been modified in a TDR totaled nil and $2.6 million at September 30, 2017 and December 31, 2016, respectively. The Company had $4.9 million and $3.9 million of consumer mortgage loans collateralized by residential real estate property that were in the process of foreclosure at September 30, 2017 and December 31, 2016, respectively. Mortgage servicing rights . In its mortgage banking business, ASB sells residential mortgage loans to government-sponsored entities and other parties, who may issue securities backed by pools of such loans. ASB retains no beneficial interests in these loans other than the servicing rights of certain loans sold. ASB received proceeds from the sale of residential mortgages of $39.8 million and $70.0 million for the three months ended September 30, 2017 and 2016 and $119.7 million and $168.5 million for the nine months ended September 30, 2017 and 2016, respectively, and recognized gains on such sales of $0.5 million and $2.4 million for the three months ended September 30, 2017 and 2016 and $1.9 million and $5.1 million for the nine months ended September 30, 2017 and 2016, respectively. There were no repurchased mortgage loans for the three and nine months ended September 30, 2017 and 2016. The repurchase reserve was $0.1 million as of September 30, 2017 and 2016. Mortgage servicing fees, a component of other income, net, were $0.8 million and $0.7 million for the three months ended September 30, 2017 and 2016, respectively and $2.3 million and $2.1 million for the nine months ended September 30, 2017 and 2016, respectively. Changes in the carrying value of mortgage servicing rights were as follows: (in thousands) Gross 1 Accumulated amortization 1 Valuation allowance Net September 30, 2017 $ 18,463 $ (9,393 ) $ — $ 9,070 December 31, 2016 17,271 (7,898 ) — 9,373 1 Reflects the impact of loans paid in full. Changes related to mortgage servicing rights were as follows: Three months ended September 30 Nine months ended September 30 (in thousands) 2017 2016 2017 2016 Mortgage servicing rights Beginning balance $ 9,181 $ 9,016 $ 9,373 $ 8,884 Amount capitalized 394 824 1,192 1,944 Amortization (505 ) (649 ) (1,495 ) (1,637 ) Other-than-temporary impairment — — — — Carrying amount before valuation allowance 9,070 9,191 9,070 9,191 Valuation allowance for mortgage servicing rights Beginning balance — — — — Provision (recovery) — — — — Other-than-temporary impairment — — — — Ending balance — — — — Net carrying value of mortgage servicing rights $ 9,070 $ 9,191 $ 9,070 $ 9,191 ASB capitalizes mortgage servicing rights acquired through either the purchase or upon the sale of mortgage loans with servicing rights retained. On a monthly basis, ASB compares the net carrying value of the mortgage servicing rights to its fair value to determine if there are any changes to the valuation allowance and/or other-than-temporary impairment for the mortgage servicing rights. ASB’s MSRs are stratified based on predominant risk characteristics of the underlying loans including loan type such as fixed-rate 15 and 30 year mortgages and note rate in bands of 50 to 100 basis points. For each stratum, fair value is calculated by discounting expected net income streams using discount rates that reflect industry pricing for similar assets. Changes in mortgage interest rates impact the value of ASB’s mortgage servicing rights. Rising interest rates typically result in slower prepayment speeds in the loans being serviced for others, which increases the value of mortgage servicing rights, whereas declining interest rates typically result in faster prepayment speeds which decrease the value of mortgage servicing rights and increase the amortization of the mortgage servicing rights. Expected net income streams are estimated based on industry assumptions regarding prepayment expectations and income and expenses associated with servicing residential mortgage loans for others. ASB uses a present value cash flow model using techniques described above to estimate the fair value of MSRs. Impairment is recognized through a valuation allowance for each stratum when the carrying amount exceeds fair value, with any associated provision recorded as a component of loan servicing fees included in “Revenues - bank” in the consolidated statements of income. A direct write-down is recorded when the recoverability of the valuation allowance is deemed to be unrecoverable. Key assumptions used in estimating the fair value of ASB’s mortgage servicing rights used in the impairment analysis were as follows: (dollars in thousands) September 30, 2017 December 31, 2016 Unpaid principal balance $ 1,212,730 $ 1,188,380 Weighted average note rate 3.94 % 3.96 % Weighted average discount rate 10.0 % 9.4 % Weighted average prepayment speed 9.2 % 8.5 % The sensitivity analysis of fair value of MSRs to hypothetical adverse changes of 25 and 50 basis points in cert

Credit agreements and long-term

Credit agreements and long-term debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Credit agreements and long-term debt	Credit agreements and long-term debt Credit agreements. HEI and Hawaiian Electric each entered into a separate agreement with a syndicate of eight financial institutions (the HEI Facility and Hawaiian Electric Facility, respectively, and together, the Facilities), effective July 3, 2017, to amend and restate their respective previously existing revolving unsecured credit agreements. The $150 million HEI Facility extended the term of the facility to June 30, 2022. The $200 million Hawaiian Electric Facility has an initial term that expires on June 29, 2018, but its term will extend to June 30, 2022 upon approval by the PUC during the initial term, which approval is currently being requested. As of September 30, 2017 and December 31, 2016, no amounts were outstanding under the Facilities or previously existing facilities. The Facilities will be maintained to support each company’s respective short-term commercial paper program, but may be drawn on to meet each company’s respective working capital needs and general corporate purposes. Changes in long-term debt. On June 29, 2017, the Department of Budget and Finance of the State of Hawaii (Department) for the benefit of the Utilities, issued, at par: Refunding Series 2017A Special Purpose Revenue Bonds Refunding Series 2017B Special Purpose Revenue Bonds Aggregate principal amount $125 million $140 million Fixed coupon interest rate 3.10% 4.00% Maturity date May 1, 2026 March 1, 2037 Department loaned the proceeds to: Hawaiian Electric $62 million $100 million Hawaii Electric Light $8 million $20 million Maui Electric $55 million $20 million Proceeds from the sale were applied to redeem at par bonds previously issued by the Department for the benefit of the Utilities: Refunding Series 2007B Special Purpose Revenue Bonds Series 2007A Special Purpose Revenue Bonds Aggregate principal amount $125 million $140 million Fixed coupon interest rate 4.60% 4.65% Maturity date May 1, 2026 March 1, 2037 Subsequent event - changes in debt. October 2017 loan . On October 6, 2017, HEI entered into a loan agreement with The Bank of Tokyo-Mitsubishi UFJ, Ltd., which agreement includes substantially the same financial covenant and customary conditions as the loan agreement with The Bank of Tokyo-Mitsubishi UFJ, Ltd. and U.S. Bank, National Association that matured on the same date. On October 6, 2017, HEI drew a $125 million Eurodollar loan for a term of 364 days at resetting interest rates. The initial Eurodollar Borrowing was for a one month interest period at an annualized interest rate of 1.99% . The proceeds from this loan were used to pay off the $125 million maturing loan.

Shareholders' equity

Shareholders' equity	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Shareholders' equity	Shareholders’ equity Accumulated other comprehensive income/(loss) . 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 (losses) on derivatives Retirement benefit plans AOCI Balance, December 31, 2016 $ (7,931 ) $ (454 ) $ (24,744 ) $ (33,129 ) $ (454 ) $ 132 $ (322 ) Current period other comprehensive income 2,452 454 1,003 3,909 454 67 521 Balance, September 30, 2017 $ (5,479 ) $ — $ (23,741 ) $ (29,220 ) $ — $ 199 $ 199 Balance, December 31, 2015 $ (1,872 ) $ (54 ) $ (24,336 ) $ (26,262 ) $ — $ 925 $ 925 Current period other comprehensive income 7,837 459 943 9,239 405 7 412 Balance, September 30, 2016 $ 5,965 $ 405 $ (23,393 ) $ (17,023 ) $ 405 $ 932 $ 1,337 Reclassifications out of AOCI were as follows: Amount reclassified from AOCI Three months ended September 30 Nine months ended September 30 Affected line item in the (in thousands) 2017 2016 2017 2016 Statements of Income / Balance Sheets HEI consolidated Net realized gains on securities included in net income $ — $ — $ — $ (360 ) Revenues-bank (net gains on sales of securities) Derivatives qualifying as cash flow hedges: Window forward contracts — (173 ) 454 (173 ) Property, plant and equipment-electric utilities Interest rate contracts (settled in 2011) — — — 54 Interest expense Retirement benefit plans: Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost 3,942 3,641 11,793 10,877 See Note 7 for additional details Impact of D&Os of the PUC included in regulatory assets (3,596 ) (3,311 ) (10,790 ) (9,934 ) See Note 7 for additional details Total reclassifications $ 346 $ 157 $ 1,457 $ 464 Hawaiian Electric consolidated Derivatives qualifying as cash flow hedges: Window forward contracts $ — $ (173 ) $ 454 $ (173 ) Construction in progress Retirement benefit plans: Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost 3,618 3,314 10,857 9,941 See Note 7 for additional details Impact of D&Os of the PUC included in regulatory assets (3,596 ) (3,311 ) (10,790 ) (9,934 ) See Note 7 for additional details Total reclassifications $ 22 $ (170 ) $ 521 $ (166 )

Retirement benefits

Retirement benefits	9 Months Ended
	Sep. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Retirement benefits	Retirement benefits Defined benefit pension and other postretirement benefit plans information. For the first nine months of 2017 , the Company contributed $50 million ( $49 million by the Utilities) to its pension and other postretirement benefit plans, compared to $49 million ( $48 million by the Utilities) in the first nine months of 2016 . The Company’s current estimate of contributions to its pension and other postretirement benefit plans in 2017 is $67 million ( $66 million by the Utilities, $ 1 million by HEI and nil by ASB), compared to $65 million ($ 64 million by the Utilities, $1 million by HEI and nil by ASB) in 2016 . In addition, the Company expects to pay directly $2 million ( $1 million by the Utilities) of benefits in 2017 , comparable to benefits paid directly in 2016 . The components of NPPC and NPBC for HEI consolidated and Hawaiian Electric consolidated were as follows: Three months ended September 30 Nine months ended September 30 Pension benefits Other benefits Pension benefits Other benefits (in thousands) 2017 2016 2017 2016 2017 2016 2017 2016 HEI consolidated Service cost $ 16,271 $ 15,126 $ 843 $ 831 $ 48,635 $ 45,430 $ 2,530 $ 2,499 Interest cost 20,304 20,396 2,363 2,417 60,881 61,154 7,089 7,254 Expected return on plan assets (25,689 ) (24,640 ) (3,078 ) (3,064 ) (77,056 ) (73,920 ) (9,248 ) (9,207 ) Amortization of net prior service gain (14 ) (15 ) (448 ) (449 ) (41 ) (43 ) (1,345 ) (1,345 ) Amortization of net actuarial loss 6,638 6,228 283 200 19,858 18,605 848 603 Net periodic pension/benefit cost 17,510 17,095 (37 ) (65 ) 52,277 51,226 (126 ) (196 ) Impact of PUC D&Os (4,534 ) (4,653 ) 346 336 (14,557 ) (13,464 ) 1,019 1,008 Net periodic pension/benefit cost (adjusted for impact of PUC D&Os) $ 12,976 $ 12,442 $ 309 $ 271 $ 37,720 $ 37,762 $ 893 $ 812 Hawaiian Electric consolidated Service cost $ 15,764 $ 14,699 $ 839 $ 821 $ 47,294 $ 44,097 $ 2,515 $ 2,463 Interest cost 18,659 18,702 2,279 2,334 55,974 56,106 6,837 7,003 Expected return on plan assets (23,973 ) (22,908 ) (3,037 ) (3,023 ) (71,919 ) (68,725 ) (9,110 ) (9,072 ) Amortization of net prior service loss (gain) 2 3 (451 ) (451 ) 6 10 (1,353 ) (1,353 ) Amortization of net actuarial loss 6,098 5,674 275 198 18,294 17,020 826 595 Net periodic pension/benefit cost 16,550 16,170 (95 ) (121 ) 49,649 48,508 (285 ) (364 ) Impact of PUC D&Os (4,534 ) (4,653 ) 346 336 (14,557 ) (13,464 ) 1,019 1,008 Net periodic pension/benefit cost (adjusted for impact of PUC D&Os) $ 12,016 $ 11,517 $ 251 $ 215 $ 35,092 $ 35,044 $ 734 $ 644 HEI consolidated recorded retirement benefits expense of $25 million ($ 22 million by the Utilities) and $26 million ( $23 million by the Utilities) in the first nine months of 2017 and 2016 , respectively, and charged the remaining net periodic benefit cost primarily to electric utility plant. The Utilities have implemented pension and OPEB tracking mechanisms under which all of their retirement benefit expenses (except for executive life and nonqualified pension plan expenses) determined in accordance with GAAP are recovered over time. Under the tracking mechanisms, these retirement benefit costs that are over/under amounts allowed in rates are charged/credited to a regulatory asset/liability. The regulatory asset/liability for each utility will be amortized over 5 years beginning with the issuance of the PUC’s D&O in the respective utility’s next rate case. Defined contribution plans information. For the first nine months of 2017 and 2016 , the Company’s expenses for its defined contribution pension plans under the Hawaiian Electric Industries Retirement Savings Plan (HEIRSP) and the ASB 401(k) Plan were $5.1 million and $4.1 million , respectively, and cash contributions were $5.0 million and $4.6 million , respectively. For the first nine months of 2017 and 2016 , the Utilities’ expenses for its defined contribution pension plan under the HEIRSP were $ 1.4 million and $1.2 million , respectively, and cash contributions were $ 1.4 million and $1.2 million , respectively.

Share-based compensation

Share-based compensation	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based compensation	Share-based compensation Under the 2010 Equity and Incentive Plan, as amended, HEI can issue shares of common stock as incentive compensation to selected employees in the form of stock options, stock appreciation rights, restricted shares, restricted stock units, performance shares and other share-based and cash-based awards. The 2010 Equity and Incentive Plan (original EIP) was amended and restated effective March 1, 2014 (EIP) and an additional 1.5 million shares was added to the shares available for issuance under these programs. As of September 30, 2017 , approximately 3.3 million shares remained available for future issuance under the terms of the EIP, assuming recycling of shares withheld to satisfy minimum statutory tax liabilities relating to EIP awards, including an estimated 0.4 million shares that could be issued upon the vesting of outstanding restricted stock units and the achievement of performance goals for awards outstanding under long-term incentive plans (assuming that such performance goals are achieved at maximum levels). Under the 2011 Nonemployee Director Stock Plan (2011 Director Plan), HEI can issue shares of common stock as compensation to nonemployee directors of HEI, Hawaiian Electric and ASB. As of September 30, 2017 , there were 85,428 shares remaining available for future issuance under the 2011 Director Plan. Share-based compensation expense and the related income tax benefit were as follows: Three months ended September 30 Nine months ended September 30 (in millions) 2017 2016 2017 2016 HEI consolidated Share-based compensation expense 1 $ 1.1 $ 1.6 $ 4.4 $ 3.6 Income tax benefit 0.4 0.5 1.5 1.2 Hawaiian Electric consolidated Share-based compensation expense 1 0.4 0.5 1.6 1.0 Income tax benefit 0.2 0.2 0.6 0.4 1 For the three months and nine months ended September 30, 2017 and 2016, the Company has not capitalized any share-based compensation. Stock awards. No nonemployee director stock grants were awarded from January 1 to September 29, 2016. Nonemployee director awards totaling $0.2 million were paid in cash in July 2016. HEI granted HEI common stock to nonemployee directors of HEI, Hawaiian Electric and ASB under the 2011 Director Plan as follows: Three months ended September 30 Nine months ended September 30 ($ in millions) 2017 2016 2017 2016 Shares granted — 19,846 35,770 19,846 Fair value $ — $ 0.6 $ 1.2 $ 0.6 Income tax benefit — 0.2 0.5 0.2 The number of shares issued to nonemployee directors of HEI, Hawaiian Electric and ASB is determined based on the closing price of HEI Common Stock on the grant date. Restricted stock units. Information about HEI’s grants of restricted stock units was as follows: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 Shares (1) Shares (1) Shares (1) Shares (1) Outstanding, beginning of period 206,483 $ 31.50 225,752 $ 29.59 220,683 $ 29.57 210,634 $ 28.82 Granted — — 766 30.65 97,873 33.47 95,048 29.91 Vested (687 ) 24.48 (4,419 ) 27.26 (89,681 ) 28.84 (83,583 ) 27.88 Forfeited — — (2,352 ) 29.69 (23,079 ) 31.50 (2,352 ) 29.69 Outstanding, end of period 205,796 $ 31.53 219,747 $ 29.64 205,796 $ 31.53 219,747 $ 29.64 Total weighted-average grant-date fair value of shares granted ($ millions) $ — $ — $ 3.3 $ 2.8 (1) Weighted-average grant-date fair value per share based on the average price of HEI common stock on the date of grant. For the first nine months of 2017 and 2016 , total restricted stock units that vested and related dividends had a fair value of $3.4 million and $2.7 million , respectively, and the related tax benefits were $1.1 million and $0.9 million , respectively. As of September 30, 2017 , there was $4.8 million of total unrecognized compensation cost related to the nonvested restricted stock units. The cost is expected to be recognized over a weighted-average period of 2.6 years . Long-term incentive plan payable in stock. The 2017-2019 long-term incentive plan (LTIP) provides for performance awards under the EIP of shares of HEI common stock based on the satisfaction of performance goals, including a market condition goal. The number of shares of HEI common stock that may be awarded is fixed on the date the grants are made, subject to the achievement of specified performance levels and calculated dividend equivalents. The potential payout varies from 0% to 200% of the number of target shares depending on the achievement of the goals. The market condition goal is based on HEI’s total shareholder return (TSR) compared to the Edison Electric Institute Index over the three -year period. The other performance condition goals relate to EPS growth, return on average common equity (ROACE) and ASB’s efficiency ratio. The 2015-2017 and 2016-2018 LTIPs provide for performance awards payable in cash, and thus are not included in the tables below. LTIP linked to TSR . Information about HEI’s LTIP grants linked to TSR was as follows: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 Shares (1) Shares (1) Shares (1) Shares (1) Outstanding, beginning of period 33,770 $ 39.51 83,947 $ 22.95 83,106 $ 22.95 162,500 $ 27.66 Granted (target level) — — — — 37,204 39.51 — — Vested (issued or unissued and cancelled) — — — — (83,106 ) 22.95 (78,553 ) 32.69 Forfeited — — (175 ) 22.95 (3,434 ) 39.51 (175 ) 22.95 Outstanding, end of period 33,770 $ 39.51 83,772 $ 22.95 33,770 $ 39.51 83,772 $ 22.95 Total weighted-average grant-date fair value of shares granted ($ millions) $ — $ — $ 1.5 $ — (1) Weighted-average grant-date fair value per share determined using a Monte Carlo simulation model. The grant date fair values of the shares were determined using a Monte Carlo simulation model utilizing actual information for the common shares of HEI and its peers for the period from the beginning of the performance period to the grant date and estimated future stock volatility and dividends of HEI and its peers over the remaining three -year performance period. The expected stock volatility assumptions for HEI and its peer group were based on the three -year historic stock volatility, and the annual dividend yield assumptions were based on dividend yields calculated on the basis of daily stock prices over the same three -year historical period. The following table summarizes the assumptions used to determine the fair value of the LTIP awards linked to TSR and the resulting fair value of LTIP awards granted: 2017 Risk-free interest rate 1.46 % Expected life in years 3 Expected volatility 20.1 % Range of expected volatility for Peer Group 15.4% to 26.0% Grant date fair value (per share) $39.51 For the nine months ended September 30, 2017 , total vested LTIP awards linked to TSR and related dividends had a fair value of $1.9 million and the related tax benefits were $0.7 million . For the nine months ended September 30, 2016 , all vested shares in the table above were unissued and cancelled (i.e., lapsed) because the TSR goal was not met. As of September 30, 2017 , there was $1.0 million of total unrecognized compensation cost related to the nonvested performance awards payable in shares linked to TSR. The cost is expected to be recognized over a weighted-average period of 2.3 years . LTIP awards linked to other performance conditions . Information about HEI’s LTIP awards payable in shares linked to other performance conditions was as follows: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 Shares (1) Shares (1) Shares (1) Shares (1) Outstanding, beginning of period 135,078 $ 33.47 113,550 $ 25.18 109,816 $ 25.18 222,647 $ 26.02 Granted (target level) — — — — 148,818 33.47 — — Vested (issued) — — — — (109,816 ) 25.18 (109,097 ) 26.89 Forfeited — — (699 ) 25.19 (13,740 ) 33.48 (699 ) 25.19 Outstanding, end of period 135,078 $ 33.47 112,851 $ 25.18 135,078 $ 33.47 112,851 $ 25.18 Total weighted-average grant-date fair value of shares granted (at target performance levels) ($ millions) $ — $ — $ 5.0 $ — (1) Weighted-average grant-date fair value per share based on the average price of HEI common stock on the date of grant. For the nine months ended September 30, 2017 and 2016 , total vested LTIP awards linked to other performance conditions and related dividends had a fair value of $4.2 million and $3.6 million and the related tax benefits were $1.6 million and $1.4 million , respectively. As of September 30, 2017 , there was $3.4 million of total unrecognized compensation cost related to the nonvested shares linked to performance conditions other than TSR. The cost is expected to be recognized over a weighted-average period of 2.3 years .

Income taxes

Income taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income taxes	Income taxes The Company’s ETRs (combined federal and state income tax rates) for the third quarters of 2017 and 2016 were 36% and 29% , respectively, and for the first nine months of 2017 and 2016 were 35% and 32% , respectively. The ETR was higher for the three months and nine months ended September 30, 2017 compared to the same periods in 2016 due primarily to 2016 tax benefits recognized on previously nondeductible merger- and spin-off-related expenses and higher tax benefits recognized for the Domestic Production Activities Deduction (DPAD) in 2016 related to the Utilities’ generation activities when the Utilities were in a consolidated net operating loss position. Hawaiian Electric’s ETRs for the third quarters of 2017 and 2016 were 36% and 37% , respectively, and for the first nine months of 2017 and 2016 were 36% and 37% , respectively. The lower ETR was due in part to the tax benefits recognized for the DPAD as a result of moving out of a federal net operating loss position in 2017. Recent tax developments. The extension of bonus depreciation under the “Protecting Americans from Tax Hikes (PATH) Act of 2015” continues to be the most significant recent tax change. The PATH Act provides 50% bonus depreciation through 2017, phases down the percentage to 40% in 2018 and 30% in 2019 and then terminates bonus depreciation thereafter. Tax depreciation is expected to increase by approximately $120 million in 2017 due to bonus depreciation, which has the effect of increasing accumulated deferred tax liabilities. However, the rate of growth of accumulated deferred tax liabilities is decreasing over time as book depreciation “catches up” with the tax depreciation taken in the past.

Cash flows

Cash flows	9 Months Ended
	Sep. 30, 2017
Supplemental Cash Flow Elements [Abstract]
Cash flows	Cash flows Nine months ended September 30 2017 2016 (in millions) Supplemental disclosures of cash flow information HEI consolidated Interest paid to non-affiliates $ 62 $ 61 Income taxes paid (including refundable credits) 32 19 Income taxes refunded (including refundable credits) — 45 Hawaiian Electric consolidated Interest paid to non-affiliates 45 43 Income taxes paid (including refundable credits) 9 — Income taxes refunded (including refundable credits) — 20 Supplemental disclosures of noncash activities HEI consolidated Property, plant and equipment Estimated fair value of noncash contributions in aid of construction (investing) 3 12 Unpaid invoices and accruals for capital expenditures (investing) Change during the period 31 (6 ) Balance, end of period 116 64 Common stock dividends reinvested in HEI common stock (financing) 1 — 17 Loans transferred from held for investment to held for sale (investing) 41 14 Common stock issued (gross) for director and executive/management compensation (financing) 2 11 7 Obligations to fund low income housing investments (investing) 10 — Hawaiian Electric consolidated Electric utility property, plant and equipment Estimated fair value of noncash contributions in aid of construction (investing) 3 12 Unpaid invoices and accruals for capital expenditures (investing) Change during the period 29 (7 ) Balance, end of period 113 63 1 The amounts shown represent common stock dividends reinvested in HEI common stock under the HEI Dividend Reinvestment and Stock Purchase Plan (DRIP) in noncash transactions. 2 The amounts shown represent the market value of common stock issued for director and executive/management compensation and withheld to satisfy statutory tax liabilities.

Fair value measurements

Fair value measurements	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair value measurements	Fair value measurements Fair value estimates are estimates of the price that would be received to sell an asset or paid upon the transfer of a liability in an orderly transaction between market participants at the measurement date. The fair value estimates are generally determined based on assumptions that market participants would use in pricing the asset or liability and are based on market data obtained from independent sources. However, in certain cases, the Company and the Utilities use their own assumptions based on the best information available in the circumstances. These valuations are estimates at a specific point in time, based on relevant market information, information about the financial instrument and judgments regarding future expected loss experience, economic conditions, risk characteristics of various financial instruments and other factors. These estimates do not reflect any premium or discount that could result if the Company or the Utilities were to sell its entire holdings of a particular financial instrument at one time. Because no active trading market exists for a portion of the Company’s and the Utilities’ financial instruments, fair value estimates cannot be determined with precision. Changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the estimates. In addition, the tax ramifications related to the realization of the unrealized gains and losses could have a significant effect on fair value estimates but have not been considered in making such estimates. The Company and the Utilities group their financial assets measured at fair value in three levels outlined as follows: Level 1: Inputs to the valuation methodology are quoted prices, unadjusted, for identical assets or liabilities in active markets. A quoted price in an active market provides the most reliable evidence of fair value and is used to measure fair value whenever available. Level 2: Inputs to the valuation methodology include quoted prices for similar assets or liabilities in active markets; inputs to the valuation methodology include quoted prices for identical or similar assets or liabilities in markets that are not active; or inputs to the valuation methodology that are derived principally from or can be corroborated by observable market data by correlation or other means. Level 3: Inputs to the valuation methodology are unobservable and significant to the fair value measurement. Level 3 assets and liabilities include financial instruments whose value is determined using discounted cash flow methodologies, as well as instruments for which the determination of fair value requires significant management judgment or estimation. Classification in the hierarchy is based upon the lowest level input that is significant to the fair value measurement of the asset or liability. For instruments classified in Level 1 and 2 where inputs are primarily based upon observable market data, there is less judgment applied in arriving at the fair value. For instruments classified in Level 3, management judgment is more significant due to the lack of observable market data. Fair value is also used on a nonrecurring basis to evaluate certain assets for impairment or for disclosure purposes. Examples of nonrecurring uses of fair value include mortgage servicing rights accounted for by the amortization method, loan impairments for certain loans and goodwill. Fair value measurement and disclosure valuation methodology. The following are descriptions of the valuation methodologies used for assets and liabilities recorded at fair value and for estimating fair value for financial instruments not carried at fair value: Short-term borrowings—other than bank . The carrying amount of short-term borrowings approximated fair value because of the short maturity of these instruments. Investment securities . The fair value of ASB’s investment securities is determined quarterly through pricing obtained from independent third-party pricing services or from brokers not affiliated with the trade. Non-binding broker quotes are infrequent and generally occur for new securities that are settled close to the month-end pricing date. The third-party pricing vendors ASB uses for pricing its securities are reputable firms that provide pricing services on a global basis and have processes in place to ensure quality and control. The third-party pricing services use a variety of methods to determine the fair value of securities that fall under Level 2 of the ASB’s fair value measurement hierarchy. Among the considerations are quoted prices for similar securities in an active market, yield spreads for similar trades, adjustments for liquidity, size, collateral characteristics, historic and generic prepayment speeds, and other observable market factors. To enhance the robustness of the pricing process, ASB will on a quarterly basis compare its standard third-party vendor’s price with that of another third-party vendor. If the prices are within an acceptable tolerance range, the price of the standard vendor will be accepted. If the variance is beyond the tolerance range, an evaluation will be conducted by ASB and a challenge to the price may be made. Fair value in such cases will be based on the value that best reflects the data and observable characteristics of the security. In all cases, the fair value used will have been independently determined by a third-party pricing vendor or non-affiliated broker. The fair value of the mortgage revenue bond is estimated using a discounted cash flow model to calculate the present value of future principal and interest payments and, therefore is classified within Level 3 of the valuation hierarchy. Loans held for sale . Residential loans carried at the lower of cost or market are valued using market observable pricing inputs, which are derived from third party loan sales and securitizations and, therefore, are classified within Level 2 of the valuation hierarchy. Commercial loans are valued at quoted market prices determined in the active market in which the loans are traded. Loans held for investment . Fair value of loans held for investment is derived using a discounted cash flow approach which includes an evaluation of the underlying loan characteristics. The valuation model uses loan characteristics which includes product type, maturity dates and the underlying interest rate of the portfolio. This information is input into the valuation models along with various forecast valuation assumptions including prepayment forecasts, to determine the discount rate. These assumptions are derived from internal and third party sources. Noting the valuation is derived from model-based techniques, ASB includes loans held for investment within Level 3 of the valuation hierarchy. Impaired loans . At the time a loan is considered impaired, it is valued at the lower of cost or fair value. Fair value is determined primarily by using an income, cost or market approach and is normally provided through appraisals. Impaired loans carried at fair value generally receive specific allocations within the allowance for loan losses. For collateral-dependent loans, fair value is commonly based on recent real estate appraisals. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Such adjustments typically result in a Level 3 classification of the inputs for determining fair value. Non-real estate collateral may be valued using an appraisal, net book value per the borrower’s financial statements, or aging reports, adjusted or discounted based on management’s historical knowledge, changes in market conditions from the time of the valuation and management’s expertise and knowledge of the client and client’s business, resulting in a Level 3 fair value classification. Generally, impaired loans are evaluated quarterly for additional impairment and adjusted accordingly. Real estate acquired in settlement of loans . Foreclosed assets are carried at fair value (less estimated costs to sell) and are generally based upon appraisals or independent market prices that are periodically updated subsequent to classification as real estate owned. Such adjustments typically result in a Level 3 classification of the inputs for determining fair value. ASB estimates the fair value of collateral-dependent loans and real estate owned using the sales comparison approach. Mortgage servicing rights . Mortgage servicing rights (MSRs) are capitalized at fair value based on market data at the time of sale and accounted for in subsequent periods at the lower of amortized cost or fair value. Mortgage servicing rights are evaluated for impairment at each reporting date. ASB's MSRs are stratified based on predominant risk characteristics of the underlying loans including loan type and note rate. For each stratum, fair value is calculated by discounting expected net income streams using discount rates that reflect industry pricing for similar assets. Expected net income streams are estimated based on industry assumptions regarding prepayment expectations and income and expenses associated with servicing residential mortgage loans for others. Impairment is recognized through a valuation allowance for each stratum when the carrying amount exceeds fair value, with any associated provision recorded as a component of loan servicing fees included in "Revenues - bank" in the consolidated statements of income. A direct write-down is recorded when the recoverability of the valuation allowance is deemed to be unrecoverable. ASB compares the fair value of MSRs to an estimated value calculated by an independent third-party. The third-party relies on both published and unpublished sources of market related assumptions and their own experience and expertise to arrive at a value. ASB uses the third-party value only to assess the reasonableness of its own estimate. Time deposits . The fair value of fixed-maturity certificates of deposit was estimated by discounting the future cash flows using the rates currently offered for deposits of similar remaining maturities. Other borrowings . For fixed-rate advances and repurchase agreements, fair value is estimated using quantitative discounted cash flow models that require the use of interest rate inputs that are currently offered for advances and repurchase agreements of similar remaining maturities. The majority of market inputs are actively quoted and can be validated through external sources, including broker market transactions and third party pricing services. Long-term debt—other than bank . Fair value of long-term debt of HEI and the Utilities was obtained from third-party financial services providers based on the current rates offered for debt of the same or similar remaining maturities and from discounting the future cash flows using the current rates offered for debt of the same or similar remaining maturities. Interest rate lock commitments (IRLCs) . The estimated fair value of commitments to originate residential mortgage loans for sale is based on quoted prices for similar loans in active markets. IRLCs are classified as Level 2 measurements. Forward sales commitments . To be announced (TBA) mortgage-backed securities forward commitments are classified as Level 1, and consist of publicly-traded debt securities for which identical fair values can be obtained through quoted market prices in active exchange markets. The fair values of ASB’s best efforts and mandatory delivery loan sale commitments are determined using quoted prices in the market place that are observable and are classified as Level 2 measurements. Window forward contracts . The estimated fair value of the Utilities’ window forward contracts was obtained from a third-party financial services provider based on the effective exchange rate offered for the foreign currency denominated transaction. Window forward contracts are classified as Level 2 measurements. The following table presents the carrying or notional amount, fair value and placement in the fair value hierarchy of the Company’s financial instruments. For stock in Federal Home Loan Bank, the carrying amount is a reasonable estimate of fair value because it can only be redeemed at par. For bank-owned life insurance, the carrying amount is the cash surrender value of the insurance policies, which is a reasonable estimate of fair value. For financial liabilities such as noninterest-bearing demand, interest-bearing demand, and savings and money market deposits, the carrying amount is a reasonable estimate of fair value as these liabilities have no stated maturity. Estimated fair value Carrying or notional amount Quoted prices in active markets for identical assets Significant other observable inputs Significant unobservable inputs (in thousands) (Level 1) (Level 2) (Level 3) Total September 30, 2017 Financial assets HEI consolidated Available-for-sale investment securities $ 1,320,110 $ — $ 1,304,683 $ 15,427 $ 1,320,110 Stock in Federal Home Loan Bank 9,706 — 9,706 — 9,706 Loans receivable, net 4,638,962 13,260 2,468 4,791,209 4,806,937 Mortgage servicing rights 9,070 — — 12,091 12,091 Bank-owned life insurance 147,391 — 147,391 — 147,391 Derivative assets 8,399 — 591 — 591 Hawaiian Electric consolidated Derivative assets-window forward contracts 8,014 — 584 — 584 Financial liabilities HEI consolidated Deposit liabilities 5,752,326 — 5,748,858 — 5,748,858 Short-term borrowings—other than bank 24,498 — 24,498 — 24,498 Other bank borrowings 153,552 — 153,717 — 153,717 Long-term debt, net—other than bank 1,618,446 — 1,747,972 — 1,747,972 Derivative liabilities 500 2 — — 2 Hawaiian Electric consolidated Short-term borrowings 6,000 — 6,000 — 6,000 Long-term debt, net 1,318,623 — 1,441,855 — 1,441,855 December 31, 2016 Financial assets HEI consolidated Money market funds $ 13,085 $ — $ 13,085 $ — $ 13,085 Available-for-sale investment securities 1,105,182 — 1,089,755 15,427 1,105,182 Stock in Federal Home Loan Bank 11,218 — 11,218 — 11,218 Loans receivable, net 4,701,977 — 13,333 4,839,493 4,852,826 Mortgage servicing rights 9,373 — — 13,216 13,216 Bank-owned life insurance 143,197 — 143,197 — 143,197 Derivative assets 23,578 — 453 — 453 Financial liabilities HEI consolidated Deposit liabilities 5,548,929 — 5,546,644 — 5,546,644 Other bank borrowings 192,618 — 193,991 — 193,991 Long-term debt, net—other than bank 1,619,019 — 1,704,717 — 1,704,717 Derivative liabilities 53,852 129 823 — 952 Hawaiian Electric consolidated Long-term debt, net 1,319,260 — 1,399,490 — 1,399,490 Derivative liabilities-window forward contracts 20,734 — 743 — 743 Fair value measurements on a recurring basis. Assets and liabilities measured at fair value on a recurring basis were as follows: September 30, 2017 December 31, 2016 Fair value measurements using Fair value measurements using (in thousands) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Money market funds (“other” segment) $ — $ — $ — $ — $ 13,085 $ — Available-for-sale investment securities (bank segment) Mortgage-related securities-FNMA, FHLMC and GNMA $ — $ 1,122,565 $ — $ — $ 897,474 $ — U.S. Treasury and federal agency obligations — 182,118 — — 192,281 — Mortgage revenue bond — — 15,427 — — 15,427 $ — $ 1,304,683 $ 15,427 $ — $ 1,089,755 $ 15,427 Derivative assets Interest rate lock commitments (bank segment) 1 $ — $ 7 $ — $ — $ 445 $ — Forward commitments (bank segment) 1 — — — — 8 — Window forward contracts (electric utility segment) 2 — 584 — — — — $ — $ 591 $ — $ — $ 453 $ — Derivative liabilities Interest rate lock commitments (bank segment) 1 $ — $ — $ — $ — $ 24 $ — Forward commitments (bank segment) 1 2 — — 129 56 — Window forward contracts (electric utility segment) 2 — — — — 743 — $ 2 $ — $ — $ 129 $ 823 $ — 1 Derivatives are carried at fair value with changes in value reflected in the balance sheet in other assets or other liabilities and included in mortgage banking income. 2 Derivatives are included in noncurrent regulatory assets and/or liabilities in the balance sheets. There were no transfers of financial assets and liabilities between Level 1 and Level 2 of the fair value hierarchy during the nine months ended September 30, 2017 . The changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows: Three months ended September 30 Nine months ended September 30 Mortgage revenue bond 2017 2016 2017 2016 (in thousands) Beginning balance $ 15,427 $ — $ 15,427 $ — Principal payments received — — — — Purchases — — — — Unrealized gain (loss) included in other comprehensive income — — — — Ending balance $ 15,427 $ — $ 15,427 $ — ASB holds one mortgage revenue bond issued by the Department of Budget and Finance of the State of Hawaii. The Company estimates the fair value by using a discounted cash flow model to calculate the present value of estimated future principal and interest payments. The unobservable input used in the fair value measurement is the weighted average discount rate. As of September 30, 2017 , the weighted average discount rate was 2.826% which was derived by incorporating a credit spread over the one month LIBOR rate. Significant increases (decreases) in the weighted average discount rate could result in a significantly lower (higher) fair value measurement. Fair value measurements on a nonrecurring basis. Certain assets and liabilities are measured at fair value on a nonrecurring basis and therefore are not included in the tables above. These measurements primarily result from assets carried at the lower of cost or fair value or from impairment of individual assets. The carrying value of assets measured at fair value on a nonrecurring basis were as follows: Fair value measurements (in thousands) Balance Level 1 Level 2 Level 3 September 30, 2017 Loans $ 2,881 $ — $ — $ 2,881 Real estate acquired in settlement of loans 93 — — 93 December 31, 2016 Loans 2,767 — — 2,767 Real estate acquired in settlement of loans 1,189 — — 1,189 For nine months ended September 30, 2017 and 2016 , there were no adjustments to fair value for ASB’s loans held for sale. The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis: Significant unobservable input value (1) ($ in thousands) Fair value Valuation technique Significant unobservable input Range Weighted Average September 30, 2017 Residential loans $ 731 Fair value of collateral Appraised value less 7% selling cost 50-91% 69% Commercial loans 2,150 Fair value of collateral Appraised value 72-76% 76% Total loans $ 2,881 Real estate acquired in settlement of loans $ 93 Sales price Sales price less 7% selling cost N/A (2) December 31, 2016 Residential loans $ 2,468 Sales price Sales price 95-100% 97% Residential loans 287 Fair value of property or collateral Appraised value less 7% selling cost 42-65% 61% Home equity lines of credit 12 Fair value of property or collateral Appraised value less 7% selling cost N/A (2) Total loans $ 2,767 Real estate acquired in settlement of loans $ 1,189 Fair value of property or collateral Appraised value less 7% selling cost 100% 100% (1) Represent percent of outstanding principal balance. (2) N/A - Not applicable. There is one loan or property in each fair value measurement type. Significant increases (decreases) in any of those inputs in isolation would result in significantly higher (lower) fair value measurements.

Termination of proposed merger

Termination of proposed merger and other matters	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Termination of proposed merger and other matters	Termination of proposed merger and other matters On December 3, 2014, HEI, NextEra Energy, Inc. (NEE) and two subsidiaries of NEE entered into an Agreement and Plan of Merger (the Merger Agreement), under which Hawaiian Electric was to become a subsidiary of NEE. The Merger Agreement contemplated that, prior to the Merger, HEI would distribute to its shareholders all of the common stock of ASB Hawaii, Inc. (ASB Hawaii), the parent company of ASB (such distribution referred to as the Spin-Off). The closing of the Merger was subject to various conditions, including receipt of regulatory approval from the PUC. In July 2016: (1) the PUC dismissed NEE and Hawaiian Electric’s application requesting approval of the proposed Merger, (2) NEE terminated the Merger Agreement and (3) pursuant to the terms of the Merger Agreement, NEE paid HEI a $90 million termination fee and $5 million for the reimbursement of expenses associated with the transaction. In 2016, the Company recognized $60 million of net income ( $2 million of net loss in each of the first and second quarters and $64 million of net income in the third quarter), comprised of the termination fee ( $55 million ), reimbursements of expenses from NEE and insurance ( $3 million ), and additional tax benefits on the previously non-tax-deductible merger- and Spin-Off-related expenses incurred through June 30, 2016 ( $8 million ), less merger- and Spin-Off-related expenses incurred in 2016 ( $6 million ) (all net of income tax impacts). The Spin-Off of ASB Hawaii was cancelled as it was cross-conditioned on the merger consummation. In May 2016, the Utilities had filed an application for approval of an liquefied natural gas (LNG) supply and transport agreement and LNG-related capital equipment, which application was conditioned on the PUC’s approval of the proposed Merger. Subsequently, the Utilities terminated the LNG agreement and withdrew the application. In 2016, Hawaiian Electric recognized expenses related to the terminated LNG agreement of $1 million , net of tax benefits, in each of the first and second quarters.

Basis of presentation (Policies

Basis of presentation (Policies)	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recent accounting pronouncements	Revenues from contracts with customers . In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606).” The core principle of the guidance in ASU No. 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should: (1) identify the contract/s with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when, or as, the entity satisfies a performance obligation. ASU No. 2014-09 also requires disclosure of the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. As of September 30, 2017 , the Company has identified its revenue streams from, and performance obligations related to, contracts with customers and has performed an analysis of these revenue streams for the impacts of Topic 606. The revenue subject to Topic 606 is largely the Utilities’ electric sales revenue and the Utilities’ and ASB’s fee income. The Company and Hawaiian Electric do not expect a material impact on the timing or pattern of revenue recognition upon adoption of ASU No. 2014-09, but do expect to provide expanded disclosures around the amount, timing, nature and uncertainty of our revenues from contracts with customers. The Company plans to adopt ASU No. 2014-09 (and subsequently issued revenue-related ASUs) in the first quarter of 2018 using the modified retrospective approach. Financial instruments . In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities,” which, among other things: • Requires equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. • Requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. • Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables). • Eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost. The Company plans to adopt ASU No. 2016-01 in the first quarter of 2018 and expects changes to disclosures, but otherwise believes the impact of adoption will not be material to the Company’s and Hawaiian Electric’s consolidated financial statements. Cash Flows . In August 2016, the FASB issued ASU No. 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments,” which provides guidance on eight specific cash flow issues - debt prepayment or debt extinguishment costs, settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims, proceeds from the settlement of corporate-owned life insurance policies (including bank-owned life insurance policies), distributions received from equity method investees, beneficial interests in securitization transactions, and separately identifiable cash flows and application of the predominance principle. The Company plans to adopt ASU No. 2016-15 in the first quarter of 2018 using a retrospective transition method and believes the impact of adoption will not be material to the Company’s and Hawaiian Electric’s consolidated statements of cash flows. Restricted cash . In November 2016, the FASB issued ASU No. 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash,” which requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. The Company plans to adopt ASU No. 2016-18 in the first quarter of 2018 using a retrospective transition method and believes the impact of adoption will not be material to the Company’s and Hawaiian Electric’s consolidated statements of cash flows. Net periodic pension cost and net periodic postretirement benefit cost . In March 2017, the FASB issued ASU No. 2017-07, “Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost,” which requires that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. It also requires the other components of net periodic pension cost (NPPC) and net periodic postretirement benefit cost (NPBC) as defined in paragraphs 715-30-35-4 and 715-60-35-9 to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations. Additionally, only the service cost component is eligible for capitalization under GAAP, when applicable. The Company plans to adopt ASU No. 2017-07 in the first quarter of 2018 and has not yet determined the impact of adoption. HEI and ASB do not capitalize pension and OPEB costs. The Utilities are seeking recovery of their defined benefit costs as reflected under the requirements of ASU No. 2017-07 (i.e., only the service cost components of NPPC and NPBC will be eligible for capitalization) in their rate cases. The Hawaii Electric Light 2016 test year and the Hawaiian Electric consolidated 2014 and 2017 test year revenue requirements were based on their current accounting for retirement benefits, and reflect the capitalization of a portion of the total pension and OPEB costs and the amortization of the pension and OPEB regulatory assets or liabilities (based on the difference between total pension and OPEB costs and the pension and OPEB costs included in rates). In Hawaii Electric Light’s (2016 test year) and Hawaiian Electric’s (consolidated 2014 and 2017 test years) on-going rate cases, each utility proposed that for 2018 and until its next rate case, the non-service cost portion of the test year pension and OPEB costs that are estimated to be capitalized, be deferred and included in the pension and OPEB tracking mechanisms, and amortized beginning with the next rate case. Maui Electric proposed in its consolidated 2015 and 2018 test year rate case filing to adopt the accounting prescribed by ASU No. 2017-07. The impact of adoption will largely be dependent on the PUC's decisions. Leases . In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842),” which requires that lessees recognize a liability to make lease payments (the lease liability) and a right-of-use asset, representing its right to use the underlying asset for the lease term, for all leases (except short-term leases) at the commencement date. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election and recognize lease expense for such leases generally on a straight-line basis over the lease term. For finance leases, a lessee is required to recognize interest on the lease liability separately from amortization of the right-of-use asset in the condensed consolidated statement of income. For operating leases, a lessee is required to recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term on a generally straight-line basis. The Company plans to adopt ASU No. 2016-02 in the first quarter of 2019 and has not yet determined the method or impact of adoption. Credit Losses . In June 2016, the FASB issued ASU No. 2016-13, “ Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ,” which is intended to improve financial reporting by requiring timelier recording of credit losses on loans and other financial instruments held by financial institutions and other organizations . ASU No. 2016-13 requires the measurement of all expected credit losses for financial assets held at the reporting date (based on historical experience, current conditions and reasonable and supportable forecasts) and enhanced disclosures to help financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, ASU No. 2016-13 amends the accounting for credit losses on available-for-sale (AFS) debt securities and purchased financial assets with credit deterioration. The other-than-temporary impairment model of accounting for credit losses on AFS debt securities will be replaced with an estimate of expected credit losses only when the fair value is below the amortized cost of the asset. The length of time the fair value of an AFS debt security has been below the amortized cost will no longer impact the determination of whether a credit loss exists. The AFS debt security model will also require the use of an allowance to record the estimated losses (and subsequent recoveries). The accounting for the initial recognition of the estimated expected credit losses for purchased financial assets with credit deterioration would be recognized through an allowance for credit losses with an offset to the cost basis of the related financial asset at acquisition (i.e., there is no impact to net income at initial recognition). The Company plans to adopt ASU No. 2016-13 in the first quarter of 2020 and has not yet determined the impact of adoption.

Segment financial information (

Segment financial information (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Schedule of segment financial information	(in thousands) Electric utility Bank Other Total Three months ended September 30, 2017 Revenues from external customers $ 598,756 $ 74,289 $ 140 $ 673,185 Intersegment revenues (eliminations) 13 — (13 ) — Revenues $ 598,769 $ 74,289 $ 127 $ 673,185 Income (loss) before income taxes $ 74,990 $ 26,764 $ (6,615 ) $ 95,139 Income taxes (benefit) 27,005 9,172 (1,582 ) 34,595 Net income (loss) 47,985 17,592 (5,033 ) 60,544 Preferred stock dividends of subsidiaries 498 — (27 ) 471 Net income (loss) for common stock $ 47,487 $ 17,592 $ (5,006 ) $ 60,073 Nine months ended September 30, 2017 Revenues from external customers $ 1,674,158 $ 222,474 $ 396 $ 1,897,028 Intersegment revenues (eliminations) 97 — (97 ) — Revenues $ 1,674,255 $ 222,474 $ 299 $ 1,897,028 Income (loss) before income taxes $ 150,715 $ 75,720 $ (20,088 ) $ 206,347 Income taxes (benefit) 54,623 25,582 (8,202 ) 72,003 Net income (loss) 96,092 50,138 (11,886 ) 134,344 Preferred stock dividends of subsidiaries 1,496 — (79 ) 1,417 Net income (loss) for common stock $ 94,596 $ 50,138 $ (11,807 ) $ 132,927 Total assets (at September 30, 2017) $ 6,107,501 $ 6,618,907 $ 16,442 $ 12,742,850 Three months ended September 30, 2016 Revenues from external customers $ 572,208 $ 73,708 $ 139 $ 646,055 Intersegment revenues (eliminations) 45 — (45 ) — Revenues $ 572,253 $ 73,708 $ 94 $ 646,055 Income before income taxes $ 75,617 $ 22,727 $ 80,861 $ 179,205 Income taxes 28,145 7,623 15,824 51,592 Net income 47,472 15,104 65,037 127,613 Preferred stock dividends of subsidiaries 498 — (27 ) 471 Net income for common stock $ 46,974 $ 15,104 $ 65,064 $ 127,142 Nine months ended September 30, 2016 Revenues from external customers $ 1,549,602 $ 213,297 $ 360 $ 1,763,259 Intersegment revenues (eliminations) 98 — (98 ) — Revenues $ 1,549,700 $ 213,297 $ 262 $ 1,763,259 Income before income taxes $ 174,376 $ 62,545 $ 64,321 $ 301,242 Income taxes 64,682 21,483 10,038 96,203 Net income 109,694 41,062 54,283 205,039 Preferred stock dividends of subsidiaries 1,496 — (79 ) 1,417 Net income for common stock $ 108,198 $ 41,062 $ 54,362 $ 203,622 Total assets (at December 31, 2016) $ 5,975,428 $ 6,421,357 $ 28,721 $ 12,425,506

Electric utility segment (Table

Electric utility segment (Tables)	9 Months Ended
	Sep. 30, 2017
Regulatory Projects and Legal Obligations [Line Items]
Schedule of condensed consolidating statements of income (loss)	Statements of Income Data Three months ended September 30 Nine months ended September 30 (in thousands) 2017 2016 2017 2016 Interest and dividend income Interest and fees on loans $ 52,210 $ 50,444 $ 155,269 $ 148,571 Interest and dividends on investment securities 6,850 4,759 20,593 14,219 Total interest and dividend income 59,060 55,203 175,862 162,790 Interest expense Interest on deposit liabilities 2,444 1,871 6,858 5,154 Interest on other borrowings 470 1,464 2,110 4,416 Total interest expense 2,914 3,335 8,968 9,570 Net interest income 56,146 51,868 166,894 153,220 Provision for loan losses 490 5,747 7,231 15,266 Net interest income after provision for loan losses 55,656 46,121 159,663 137,954 Noninterest income Fees from other financial services 5,635 5,599 17,055 16,799 Fee income on deposit liabilities 5,533 5,627 16,526 16,045 Fee income on other financial products 1,904 2,151 5,741 6,563 Bank-owned life insurance 1,257 1,616 4,165 3,620 Mortgage banking income 520 2,347 1,896 5,096 Gains on sale of investment securities, net — — — 598 Other income, net 380 1,165 1,229 1,786 Total noninterest income 15,229 18,505 46,612 50,507 Noninterest expense Compensation and employee benefits 23,724 22,844 71,703 67,197 Occupancy 4,284 3,991 12,623 12,244 Data processing 3,262 3,150 9,749 9,599 Services 2,863 2,427 7,989 8,093 Equipment 1,814 1,759 5,333 5,193 Office supplies, printing and postage 1,444 1,483 4,506 4,431 Marketing 934 747 2,290 2,507 FDIC insurance 746 907 2,296 2,704 Other expense 5,050 4,591 14,066 13,948 Total noninterest expense 44,121 41,899 130,555 125,916 Income before income taxes 26,764 22,727 75,720 62,545 Income taxes 9,172 7,623 25,582 21,483 Net income $ 17,592 $ 15,104 $ 50,138 $ 41,062
Schedule of condensed consolidating balance sheet	Balance Sheets Data (in thousands) September 30, 2017 December 31, 2016 Assets Cash and due from banks $ 120,492 $ 137,083 Interest-bearing deposits 69,223 52,128 Restricted cash — 1,764 Available-for-sale investment securities, at fair value 1,320,110 1,105,182 Stock in Federal Home Loan Bank, at cost 9,706 11,218 Loans receivable held for investment 4,676,281 4,738,693 Allowance for loan losses (53,047 ) (55,533 ) Net loans 4,623,234 4,683,160 Loans held for sale, at lower of cost or fair value 15,728 18,817 Other 378,224 329,815 Goodwill 82,190 82,190 Total assets $ 6,618,907 $ 6,421,357 Liabilities and shareholder’s equity Deposit liabilities—noninterest-bearing $ 1,710,698 $ 1,639,051 Deposit liabilities—interest-bearing 4,041,628 3,909,878 Other borrowings 153,552 192,618 Other 107,558 101,635 Total liabilities 6,013,436 5,843,182 Commitments and contingencies Common stock 1 1 Additional paid in capital 344,512 342,704 Retained earnings 279,956 257,943 Accumulated other comprehensive loss, net of tax benefits Net unrealized losses on securities $ (5,479 ) $ (7,931 ) Retirement benefit plans (13,519 ) (18,998 ) (14,542 ) (22,473 ) Total shareholder’s equity 605,471 578,175 Total liabilities and shareholder’s equity $ 6,618,907 $ 6,421,357 Other assets Bank-owned life insurance $ 147,391 $ 143,197 Premises and equipment, net 123,326 90,570 Prepaid expenses 5,356 3,348 Accrued interest receivable 17,488 16,824 Mortgage-servicing rights 9,070 9,373 Low-income housing equity investments 54,515 47,081 Real estate acquired in settlement of loans, net 1,183 1,189 Other 19,895 18,233 $ 378,224 $ 329,815 Other liabilities Accrued expenses $ 41,698 $ 36,754 Federal and state income taxes payable 6,829 4,728 Cashier’s checks 27,448 24,156 Advance payments by borrowers 4,867 10,335 Other 26,716 25,662 $ 107,558 $ 101,635
Hawaiian Electric Company, Inc. and Subsidiaries
Regulatory Projects and Legal Obligations [Line Items]
Schedule of purchases from all IPPs	Purchases from all IPPs were as follows: Three months ended September 30 Nine months ended September 30 (in millions) 2017 2016 2017 2016 Kalaeloa $ 48 $ 44 $ 136 $ 109 AES Hawaii 39 38 103 112 HPOWER 18 19 51 52 Puna Geothermal Venture 10 7 28 19 HEP 8 8 25 23 Other IPPs 1 38 42 98 98 Total IPPs $ 161 $ 158 $ 441 $ 413 1 Includes wind power, solar power, feed-in tariff projects and other PPAs.
Schedule of net annual incremental amounts proposed to be collected (refunded)	The net annual incremental amounts to be collected (refunded) are as follows: ($ in millions) Hawaiian Electric Hawaii Electric Light Maui Electric 2017 Annual incremental RAM adjusted revenues $ 12.7 $ 3.2 $ 1.6 Annual change in accrued earnings sharing credits $ — $ — $ — Annual change in accrued RBA balance as of December 31, 2016 (and associated revenue taxes) (refunded) $ (2.4 ) $ (2.5 ) $ (0.2 ) Net annual incremental amount to be collected under the tariffs $ 10.3 $ 0.7 $ 1.4
Schedule of condensed consolidating statements of income (loss)	Condensed Consolidating Statement of Income Nine months ended September 30, 2016 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consolidating adjustments Hawaiian Electric Revenues $ 1,088,537 229,940 231,295 — (72 ) $ 1,549,700 Expenses Fuel oil 224,995 40,725 68,543 — — 334,263 Purchased power 313,730 58,885 40,052 — — 412,667 Other operation and maintenance 202,438 46,574 49,248 — — 298,260 Depreciation 94,564 28,347 17,389 — — 140,300 Taxes, other than income taxes 104,764 21,632 21,990 — — 148,386 Total expenses 940,491 196,163 197,222 — — 1,333,876 Operating income 148,046 33,777 34,073 — (72 ) 215,824 Allowance for equity funds used during construction 4,771 571 668 — — 6,010 Equity in earnings of subsidiaries 33,541 — — — (33,541 ) — Interest expense and other charges, net (34,113 ) (8,606 ) (7,087 ) — 72 (49,734 ) Allowance for borrowed funds used during construction 1,785 219 272 — — 2,276 Income before income taxes 154,030 25,961 27,926 — (33,541 ) 174,376 Income taxes 45,022 9,075 10,585 — — 64,682 Net income 109,008 16,886 17,341 — (33,541 ) 109,694 Preferred stock dividends of subsidiaries — 400 286 — — 686 Net income attributable to Hawaiian Electric 109,008 16,486 17,055 — (33,541 ) 109,008 Preferred stock dividends of Hawaiian Electric 810 — — — — 810 Net income for common stock $ 108,198 16,486 17,055 — (33,541 ) $ 108,198 Condensed Consolidating Statement of Income Three months ended September 30, 2016 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consolidating adjustments Hawaiian Electric Revenues $ 404,352 83,105 84,831 — (35 ) $ 572,253 Expenses Fuel oil 88,676 14,603 25,345 — — 128,624 Purchased power 118,751 22,728 16,271 — — 157,750 Other operation and maintenance 64,683 15,017 15,089 — — 94,789 Depreciation 31,520 9,449 5,790 — — 46,759 Taxes, other than income taxes 38,666 7,836 8,017 — — 54,519 Total expenses 342,296 69,633 70,512 — — 482,441 Operating income 62,056 13,472 14,319 — (35 ) 89,812 Allowance for equity funds used during construction 1,806 238 230 — — 2,274 Equity in earnings of subsidiaries 14,729 — — — (14,729 ) — Interest expense and other charges, net (11,903 ) (2,972 ) (2,483 ) — 35 (17,323 ) Allowance for borrowed funds used during construction 669 91 94 — — 854 Income before income taxes 67,357 10,829 12,160 — (14,729 ) 75,617 Income taxes 20,113 3,392 4,640 — — 28,145 Net income 47,244 7,437 7,520 — (14,729 ) 47,472 Preferred stock dividends of subsidiaries — 133 95 — — 228 Net income attributable to Hawaiian Electric 47,244 7,304 7,425 — (14,729 ) 47,244 Preferred stock dividends of Hawaiian Electric 270 — — — — 270 Net income for common stock $ 46,974 7,304 7,425 — (14,729 ) $ 46,974 Condensed Consolidating Statement of Income Three months ended September 30, 2017 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consolidating adjustments Hawaiian Electric Revenues $ 429,267 84,334 85,198 — (30 ) $ 598,769 Expenses Fuel oil 103,959 15,754 26,545 — — 146,258 Purchased power 123,893 21,332 15,122 — — 160,347 Other operation and maintenance 66,221 16,593 17,288 — — 100,102 Depreciation 32,722 9,685 5,799 — — 48,206 Taxes, other than income taxes 40,824 7,928 8,028 — — 56,780 Total expenses 367,619 71,292 72,782 — — 511,693 Operating income 61,648 13,042 12,416 — (30 ) 87,076 Allowance for equity funds used during construction 3,108 167 207 — — 3,482 Equity in earnings of subsidiaries 12,767 — — — (12,767 ) — Interest expense and other charges, net (11,786 ) (2,899 ) (2,252 ) — 30 (16,907 ) Allowance for borrowed funds used during construction 1,173 72 94 — — 1,339 Income before income taxes 66,910 10,382 10,465 — (12,767 ) 74,990 Income taxes 19,153 3,815 4,037 — — 27,005 Net income 47,757 6,567 6,428 — (12,767 ) 47,985 Preferred stock dividends of subsidiaries — 133 95 — — 228 Net income attributable to Hawaiian Electric 47,757 6,434 6,333 — (12,767 ) 47,757 Preferred stock dividends of Hawaiian Electric 270 — — — — 270 Net income for common stock $ 47,487 6,434 6,333 — (12,767 ) $ 47,487 Condensed Consolidating Statement of Income Nine months ended September 30, 2017 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consolidating adjustments Hawaiian Electric Revenues $ 1,186,524 245,026 242,756 — (51 ) $ 1,674,255 Expenses Fuel oil 301,774 47,486 82,527 — — 431,787 Purchased power 340,498 63,403 36,637 — — 440,538 Other operation and maintenance 204,460 49,667 52,589 — — 306,716 Depreciation 98,167 29,056 17,355 — — 144,578 Taxes, other than income taxes 113,483 23,080 23,012 — — 159,575 Total expenses 1,058,382 212,692 212,120 — — 1,483,194 Operating income 128,142 32,334 30,636 — (51 ) 191,061 Allowance for equity funds used during construction 7,823 416 669 — — 8,908 Equity in earnings of subsidiaries 29,306 — — — (29,306 ) — Interest expense and other charges, net (36,405 ) (8,899 ) (7,372 ) — 51 (52,625 ) Allowance for borrowed funds used during construction 2,910 172 289 — — 3,371 Income before income taxes 131,776 24,023 24,222 — (29,306 ) 150,715 Income taxes 36,370 8,973 9,280 — — 54,623 Net income 95,406 15,050 14,942 — (29,306 ) 96,092 Preferred stock dividends of subsidiaries — 400 286 — — 686 Net income attributable to Hawaiian Electric 95,406 14,650 14,656 — (29,306 ) 95,406 Preferred stock dividends of Hawaiian Electric 810 — — — — 810 Net income for common stock $ 94,596 14,650 14,656 — (29,306 ) $ 94,596
Schedule of condensed consolidating statement of comprehensive income	Condensed Consolidating Statement of Comprehensive Income Three months ended September 30, 2017 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consolidating adjustments Hawaiian Electric Net income for common stock $ 47,487 6,434 6,333 — (12,767 ) $ 47,487 Other comprehensive income (loss), net of taxes: 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 3,618 476 404 — (880 ) 3,618 Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes (3,596 ) (476 ) (404 ) — 880 (3,596 ) Other comprehensive income, net of taxes 22 — — — — 22 Comprehensive income attributable to common shareholder $ 47,509 6,434 6,333 — (12,767 ) $ 47,509 Condensed Consolidating Statement of Comprehensive Income Nine months ended September 30, 2017 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consolidating adjustments Hawaiian Electric Net income for common stock $ 94,596 14,650 14,656 — (29,306 ) $ 94,596 Other comprehensive income (loss), net of taxes: Derivatives qualifying as cash flow hedges: Reclassification adjustment to net income, net of tax benefits 454 — — — — 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 10,857 1,428 1,214 — (2,642 ) 10,857 Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes (10,790 ) (1,427 ) (1,214 ) — 2,641 (10,790 ) Other comprehensive income, net of taxes 521 1 — — (1 ) 521 Comprehensive income attributable to common shareholder $ 95,117 14,651 14,656 — (29,307 ) $ 95,117 Condensed Consolidating Statement of Comprehensive Income Nine months ended September 30, 2016 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consolidating adjustments Hawaiian Electric Net income for common stock $ 108,198 16,486 17,055 — (33,541 ) $ 108,198 Other comprehensive income (loss), net of taxes: Derivatives qualifying as cash flow hedges: Effective portion of foreign currency hedge net unrealized gain, net of taxes 578 — — — — 578 Reclassification adjustment to net income, net of taxes (173 ) — — — — (173 ) 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 9,941 1,288 1,162 — (2,450 ) 9,941 Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes (9,934 ) (1,289 ) (1,166 ) — 2,455 (9,934 ) Other comprehensive income (loss), net of taxes 412 (1 ) (4 ) — 5 412 Comprehensive income attributable to common shareholder $ 108,610 16,485 17,051 — (33,536 ) $ 108,610 Condensed Consolidating Statement of Comprehensive Income Three months ended September 30, 2016 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consolidating adjustments Hawaiian Electric Net income for common stock $ 46,974 7,304 7,425 — (14,729 ) $ 46,974 Other comprehensive income (loss), net of taxes: Derivatives qualified as cash flow hedges: Effective portion of foreign currency hedge net unrealized loss, net of tax benefits 321 — — — — 321 Reclassification adjustment to net income, net of taxes (173 ) — — — — (173 ) 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 3,314 429 387 — (816 ) 3,314 Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes (3,311 ) (429 ) (389 ) — 818 (3,311 ) Other comprehensive income (loss), net of taxes 151 — (2 ) — 2 151 Comprehensive income attributable to common shareholder $ 47,125 7,304 7,423 — (14,727 ) $ 47,125
Schedule of condensed consolidating balance sheet	Condensed Consolidating Balance Sheet December 31, 2016 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consoli- dating adjustments Hawaiian Electric Assets Property, plant and equipment Utility property, plant and equipment Land $ 43,956 6,181 3,016 — — $ 53,153 Plant and equipment 4,241,060 1,255,185 1,109,487 — — 6,605,732 Less accumulated depreciation (1,382,972 ) (507,666 ) (478,644 ) — — (2,369,282 ) Construction in progress 180,194 12,510 19,038 — — 211,742 Utility property, plant and equipment, net 3,082,238 766,210 652,897 — — 4,501,345 Nonutility property, plant and equipment, less accumulated depreciation 5,760 115 1,532 — — 7,407 Total property, plant and equipment, net 3,087,998 766,325 654,429 — — 4,508,752 Investment in wholly owned subsidiaries, at equity 550,946 — — — (550,946 ) — Current assets Cash and cash equivalents 61,388 10,749 2,048 101 — 74,286 Advances to affiliates — 3,500 10,000 — (13,500 ) — Customer accounts receivable, net 86,373 20,055 17,260 — — 123,688 Accrued unbilled revenues, net 65,821 13,564 12,308 — — 91,693 Other accounts receivable, net 7,652 2,445 1,416 — (6,280 ) 5,233 Fuel oil stock, at average cost 47,239 8,229 10,962 — — 66,430 Materials and supplies, at average cost 29,928 7,380 16,371 — — 53,679 Prepayments and other 16,502 5,352 2,179 — (933 ) 23,100 Regulatory assets 60,185 3,483 2,364 — — 66,032 Total current assets 375,088 74,757 74,908 101 (20,713 ) 504,141 Other long-term assets Regulatory assets 662,232 120,863 108,324 — — 891,419 Unamortized debt expense 151 23 34 — — 208 Other 43,743 13,573 13,592 — — 70,908 Total other long-term assets 706,126 134,459 121,950 — — 962,535 Total assets $ 4,720,158 975,541 851,287 101 (571,659 ) $ 5,975,428 Capitalization and liabilities Capitalization Common stock equity $ 1,799,787 291,291 259,554 101 (550,946 ) $ 1,799,787 Cumulative preferred stock—not subject to mandatory redemption 22,293 7,000 5,000 — — 34,293 Long-term debt, net 915,437 213,703 190,120 — — 1,319,260 Total capitalization 2,737,517 511,994 454,674 101 (550,946 ) 3,153,340 Current liabilities Short-term borrowings from affiliate 13,500 — — — (13,500 ) — Accounts payable 86,369 18,126 13,319 — — 117,814 Interest and preferred dividends payable 15,761 4,206 2,882 — (11 ) 22,838 Taxes accrued 120,176 28,100 25,387 — (933 ) 172,730 Regulatory liabilities — 2,219 1,543 — — 3,762 Other 41,352 7,637 12,501 — (6,269 ) 55,221 Total current liabilities 277,158 60,288 55,632 — (20,713 ) 372,365 Deferred credits and other liabilities Deferred income taxes 524,433 108,052 100,911 — 263 733,659 Regulatory liabilities 281,112 93,974 31,845 — — 406,931 Unamortized tax credits 57,844 15,994 15,123 — — 88,961 Defined benefit pension and other postretirement benefit plans liability 444,458 75,005 80,263 — — 599,726 Other 49,191 13,024 14,969 — (263 ) 76,921 Total deferred credits and other liabilities 1,357,038 306,049 243,111 — — 1,906,198 Contributions in aid of construction 348,445 97,210 97,870 — — 543,525 Total capitalization and liabilities $ 4,720,158 975,541 851,287 101 (571,659 ) $ 5,975,428 Condensed Consolidating Balance Sheet September 30, 2017 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consoli- dating adjustments Hawaiian Electric Assets Property, plant and equipment Utility property, plant and equipment Land $ 44,706 6,191 3,016 — — $ 53,913 Plant and equipment 4,368,428 1,278,884 1,130,942 — — 6,778,254 Less accumulated depreciation (1,441,963 ) (524,759 ) (493,707 ) — — (2,460,429 ) Construction in progress 262,098 16,459 28,935 — — 307,492 Utility property, plant and equipment, net 3,233,269 776,775 669,186 — — 4,679,230 Nonutility property, plant and equipment, less accumulated depreciation 5,762 115 1,532 — — 7,409 Total property, plant and equipment, net 3,239,031 776,890 670,718 — — 4,686,639 Investment in wholly owned subsidiaries, at equity 559,671 — — — (559,671 ) — Current assets Cash and cash equivalents 3,454 4,714 1,718 101 — 9,987 Advances to affiliates — 6,600 4,000 — (10,600 ) — Customer accounts receivable, net 92,961 20,830 19,344 — — 133,135 Accrued unbilled revenues, net 80,644 15,145 13,918 — — 109,707 Other accounts receivable, net 7,402 2,797 1,244 — (7,346 ) 4,097 Fuel oil stock, at average cost 40,460 8,034 11,759 — — 60,253 Materials and supplies, at average cost 28,865 8,960 18,134 — — 55,959 Prepayments and other 22,197 4,183 3,647 — (156 ) 29,871 Regulatory assets 63,608 4,341 4,824 — — 72,773 Total current assets 339,591 75,604 78,588 101 (18,102 ) 475,782 Other long-term assets Regulatory assets 639,689 118,655 105,847 — — 864,191 Unamortized debt expense 472 83 106 — — 661 Other 50,424 14,981 14,823 — — 80,228 Total other long-term assets 690,585 133,719 120,776 — — 945,080 Total assets $ 4,828,878 986,213 870,082 101 (577,773 ) $ 6,107,501 Capitalization and liabilities Capitalization Common stock equity $ 1,829,075 294,319 265,251 101 (559,671 ) $ 1,829,075 Cumulative preferred stock—not subject to mandatory redemption 22,293 7,000 5,000 — — 34,293 Long-term debt, net 915,097 213,658 189,868 — — 1,318,623 Total capitalization 2,766,465 514,977 460,119 101 (559,671 ) 3,181,991 Current liabilities Short-term borrowings from non-affiliates 6,000 — — — — 6,000 Short-term borrowings from affiliate 10,600 — — — (10,600 ) — Accounts payable 94,618 15,291 14,331 — — 124,240 Interest and preferred dividends payable 17,870 3,973 3,429 — (11 ) 25,261 Taxes accrued 134,935 27,571 25,919 — (5,060 ) 183,365 Regulatory liabilities 576 1,029 1,794 — — 3,399 Other 45,662 8,173 13,111 — (7,335 ) 59,611 Total current liabilities 310,261 56,037 58,584 — (23,006 ) 401,876 Deferred credits and other liabilities Deferred income taxes 540,857 113,277 108,573 — 4,904 767,611 Regulatory liabilities 328,530 100,973 33,314 — — 462,817 Unamortized tax credits 57,577 16,048 15,202 — — 88,827 Defined benefit pension and other postretirement benefit plans liability 431,191 72,366 78,156 — — 581,713 Other 27,097 14,383 16,068 — — 57,548 Total deferred credits and other liabilities 1,385,252 317,047 251,313 — 4,904 1,958,516 Contributions in aid of construction 366,900 98,152 100,066 — — 565,118 Total capitalization and liabilities $ 4,828,878 986,213 870,082 101 (577,773 ) $ 6,107,501
Schedule of condensed consolidating statement of changes in common stock equity	Condensed Consolidating Statement of Changes in Common Stock Equity Nine months ended September 30, 2017 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consolidating adjustments Hawaiian Electric Balance, December 31, 2016 $ 1,799,787 291,291 259,554 101 (550,946 ) $ 1,799,787 Net income for common stock 94,596 14,650 14,656 — (29,306 ) 94,596 Other comprehensive income, net of taxes 521 1 — — (1 ) 521 Common stock dividends (65,825 ) (11,622 ) (8,959 ) — 20,581 (65,825 ) Common stock issuance expenses (4 ) (1 ) — — 1 (4 ) Balance, September 30, 2017 $ 1,829,075 294,319 265,251 101 (559,671 ) $ 1,829,075 Condensed Consolidating Statement of Changes in Common Stock Equity Nine months ended September 30, 2016 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consolidating adjustments Hawaiian Electric Balance, December 31, 2015 $ 1,728,325 292,702 263,725 101 (556,528 ) $ 1,728,325 Net income for common stock 108,198 16,486 17,055 — (33,541 ) 108,198 Other comprehensive income (loss), net of taxes 412 (1 ) (4 ) — 5 412 Common stock dividends (70,199 ) (9,906 ) (9,795 ) — 19,701 (70,199 ) Common stock issuance expenses (9 ) (5 ) — — 5 (9 ) Balance, September 30, 2016 $ 1,766,727 299,276 270,981 101 (570,358 ) $ 1,766,727
Schedule of condensed consolidating statement of cash flows	Condensed Consolidating Statement of Cash Flows Nine months ended September 30, 2016 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other Consolidating Hawaiian Electric Cash flows from operating activities Net income $ 109,008 16,886 17,341 — (33,541 ) $ 109,694 Adjustments to reconcile net income to net cash provided by operating activities: Equity in earnings of subsidiaries (33,616 ) — — — 33,541 (75 ) Common stock dividends received from subsidiaries 19,776 — — — (19,701 ) 75 Depreciation of property, plant and equipment 94,564 28,347 17,389 — — 140,300 Other amortization 2,462 1,366 1,552 — — 5,380 Deferred income taxes 41,005 4,529 10,085 — 29 55,648 Allowance for equity funds used during construction (4,771 ) (571 ) (668 ) — — (6,010 ) Other 2,925 162 147 — — 3,234 Changes in assets and liabilities: Decrease (increase) in accounts receivable 328 (2,716 ) (1,313 ) — 3,046 (655 ) Increase in accrued unbilled revenues (9,673 ) (373 ) (612 ) — — (10,658 ) Decrease in fuel oil stock 4,157 1,425 1,154 — — 6,736 Decrease (increase) in materials and supplies (1,755 ) (1,559 ) 387 — — (2,927 ) Decrease (increase) in regulatory assets (2,474 ) (150 ) 373 — — (2,251 ) Increase (decrease) in accounts payable (2,628 ) 143 1,809 — — (676 ) Change in prepaid and accrued income taxes, tax credits and revenue taxes (7,324 ) 2,230 (4,472 ) — (29 ) (9,595 ) Increase (decrease) in defined benefit pension and other postretirement benefit plans liability 449 40 (129 ) — — 360 Change in other assets and liabilities (10,548 ) 2,856 (2,571 ) — (3,046 ) (13,309 ) Net cash provided by operating activities 201,885 52,615 40,472 — (19,701 ) 275,271 Cash flows from investing activities Capital expenditures (188,415 ) (37,835 ) (24,454 ) — — (250,704 ) Contributions in aid of construction 18,181 2,691 2,696 — — 23,568 Other 901 169 30 — — 1,100 Advances from affiliates — (3,000 ) (8,000 ) — 11,000 — Net cash used in investing activities (169,333 ) (37,975 ) (29,728 ) — 11,000 (226,036 ) Cash flows from financing activities Common stock dividends (70,199 ) (9,906 ) (9,795 ) — 19,701 (70,199 ) Preferred stock dividends of Hawaiian Electric and subsidiaries (810 ) (400 ) (286 ) — — (1,496 ) Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less 32,000 — — — (11,000 ) 21,000 Other (3 ) (8 ) (1 ) — — (12 ) Net cash used in financing activities (39,012 ) (10,314 ) (10,082 ) — 8,701 (50,707 ) Net increase (decrease) in cash and cash equivalents (6,460 ) 4,326 662 — — (1,472 ) Cash and cash equivalents, beginning of period 16,281 2,682 5,385 101 — 24,449 Cash and cash equivalents, end of period $ 9,821 7,008 6,047 101 — $ 22,977 Condensed Consolidating Statement of Cash Flows Nine months ended September 30, 2017 (in thousands) Hawaiian Electric Hawaii Electric Light Maui Electric Other subsidiaries Consolidating adjustments Hawaiian Electric Cash flows from operating activities Net income $ 95,406 15,050 14,942 — (29,306 ) $ 96,092 Adjustments to reconcile net income to net cash provided by operating activities: Equity in earnings of subsidiaries (29,381 ) — — — 29,306 (75 ) Common stock dividends received from subsidiaries 20,656 — — — (20,581 ) 75 Depreciation of property, plant and equipment 98,167 29,056 17,355 — — 144,578 Other amortization 2,168 1,718 2,232 — — 6,118 Deferred income taxes 12,166 5,237 7,493 — 4,641 29,537 Allowance for equity funds used during construction (7,823 ) (416 ) (669 ) — — (8,908 ) Other 216 566 (256 ) — — 526 Changes in assets and liabilities: Increase in accounts receivable (6,114 ) (1,127 ) (1,912 ) — 1,066 (8,087 ) Increase in accrued unbilled revenues (14,823 ) (1,581 ) (1,610 ) — — (18,014 ) Decrease (increase) in fuel oil stock 6,779 195 (797 ) — — 6,177 Decrease (increase) in materials and supplies 1,063 (1,580 ) (1,763 ) — — (2,280 ) Decrease (increase) in regulatory assets 9,471 (2,935 ) (2,614 ) — — 3,922 Increase (decrease) in accounts payable (22,224 ) (2,955 ) 2,338 — — (22,841 ) Change in prepaid and accrued income taxes, tax credits and revenue taxes 10,920 (758 ) 210 — (5,081 ) 5,291 Increase (decrease) in defined benefit pension and other postretirement benefit plans liability 532 39 (118 ) — — 453 Change in other assets and liabilities (2,709 ) 1,059 54 — (1,066 ) (2,662 ) Net cash provided by operating activities 174,470 41,568 34,885 — (21,021 ) 229,902 Cash flows from investing activities Capital expenditures (207,493 ) (36,405 ) (34,106 ) — — (278,004 ) Contributions in aid of construction 34,787 3,460 2,356 — — 40,603 Other 6,089 871 714 — 440 8,114 Advances from affiliates — (3,100 ) 6,000 — (2,900 ) — Net cash used in investing activities (166,617 ) (35,174 ) (25,036 ) — (2,460 ) (229,287 ) Cash flows from financing activities Common stock dividends (65,825 ) (11,622 ) (8,959 ) — 20,581 (65,825 ) Preferred stock dividends of Hawaiian Electric and subsidiaries (810 ) (400 ) (286 ) — — (1,496 ) Proceeds from issuance of special purpose revenue bonds 162,000 28,000 75,000 — 265,000 Funds transferred for redemption of special purpose revenue bonds (162,000 ) (28,000 ) (75,000 ) — — (265,000 ) Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less 3,100 — — — 2,900 6,000 Other (2,252 ) (407 ) (934 ) — — (3,593 ) Net cash used in financing activities (65,787 ) (12,429 ) (10,179 ) — 23,481 (64,914 ) Net decrease in cash and cash equivalents (57,934 ) (6,035 ) (330 ) — — (64,299 ) Cash and cash equivalents, beginning of period 61,388 10,749 2,048 101 — 74,286 Cash and cash equivalents, end of period $ 3,454 4,714 1,718 101 — $ 9,987

Bank segment (Tables)

Bank segment (Tables)	9 Months Ended
	Sep. 30, 2017
Bank Subsidiary [Abstract]
Schedule of statements of income data	Statements of Income Data Three months ended September 30 Nine months ended September 30 (in thousands) 2017 2016 2017 2016 Interest and dividend income Interest and fees on loans $ 52,210 $ 50,444 $ 155,269 $ 148,571 Interest and dividends on investment securities 6,850 4,759 20,593 14,219 Total interest and dividend income 59,060 55,203 175,862 162,790 Interest expense Interest on deposit liabilities 2,444 1,871 6,858 5,154 Interest on other borrowings 470 1,464 2,110 4,416 Total interest expense 2,914 3,335 8,968 9,570 Net interest income 56,146 51,868 166,894 153,220 Provision for loan losses 490 5,747 7,231 15,266 Net interest income after provision for loan losses 55,656 46,121 159,663 137,954 Noninterest income Fees from other financial services 5,635 5,599 17,055 16,799 Fee income on deposit liabilities 5,533 5,627 16,526 16,045 Fee income on other financial products 1,904 2,151 5,741 6,563 Bank-owned life insurance 1,257 1,616 4,165 3,620 Mortgage banking income 520 2,347 1,896 5,096 Gains on sale of investment securities, net — — — 598 Other income, net 380 1,165 1,229 1,786 Total noninterest income 15,229 18,505 46,612 50,507 Noninterest expense Compensation and employee benefits 23,724 22,844 71,703 67,197 Occupancy 4,284 3,991 12,623 12,244 Data processing 3,262 3,150 9,749 9,599 Services 2,863 2,427 7,989 8,093 Equipment 1,814 1,759 5,333 5,193 Office supplies, printing and postage 1,444 1,483 4,506 4,431 Marketing 934 747 2,290 2,507 FDIC insurance 746 907 2,296 2,704 Other expense 5,050 4,591 14,066 13,948 Total noninterest expense 44,121 41,899 130,555 125,916 Income before income taxes 26,764 22,727 75,720 62,545 Income taxes 9,172 7,623 25,582 21,483 Net income $ 17,592 $ 15,104 $ 50,138 $ 41,062
Schedule of statements of comprehensive income data	Statements of Comprehensive Income Data Three months ended September 30 Nine months ended September 30 (in thousands) 2017 2016 2017 2016 Net income $ 17,592 $ 15,104 $ 50,138 $ 41,062 Other comprehensive income (loss), net of taxes: Net unrealized gains (losses) on available-for-sale investment securities: Net unrealized gains (losses) on available-for-sale investment securities arising during the period, net of (taxes) benefits of $(137), $1,417, $(1,619) and $(5,413), respectively 208 (2,147 ) 2,452 8,197 Reclassification adjustment for net realized gains included in net income, net of taxes of nil, nil, nil and $238, respectively — — — (360 ) 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 of $138, $144, $675 and $421, respectively 209 219 1,023 638 Other comprehensive income (loss), net of taxes 417 (1,928 ) 3,475 8,475 Comprehensive income $ 18,009 $ 13,176 $ 53,613 $ 49,537
Schedule of balance sheets data	Balance Sheets Data (in thousands) September 30, 2017 December 31, 2016 Assets Cash and due from banks $ 120,492 $ 137,083 Interest-bearing deposits 69,223 52,128 Restricted cash — 1,764 Available-for-sale investment securities, at fair value 1,320,110 1,105,182 Stock in Federal Home Loan Bank, at cost 9,706 11,218 Loans receivable held for investment 4,676,281 4,738,693 Allowance for loan losses (53,047 ) (55,533 ) Net loans 4,623,234 4,683,160 Loans held for sale, at lower of cost or fair value 15,728 18,817 Other 378,224 329,815 Goodwill 82,190 82,190 Total assets $ 6,618,907 $ 6,421,357 Liabilities and shareholder’s equity Deposit liabilities—noninterest-bearing $ 1,710,698 $ 1,639,051 Deposit liabilities—interest-bearing 4,041,628 3,909,878 Other borrowings 153,552 192,618 Other 107,558 101,635 Total liabilities 6,013,436 5,843,182 Commitments and contingencies Common stock 1 1 Additional paid in capital 344,512 342,704 Retained earnings 279,956 257,943 Accumulated other comprehensive loss, net of tax benefits Net unrealized losses on securities $ (5,479 ) $ (7,931 ) Retirement benefit plans (13,519 ) (18,998 ) (14,542 ) (22,473 ) Total shareholder’s equity 605,471 578,175 Total liabilities and shareholder’s equity $ 6,618,907 $ 6,421,357 Other assets Bank-owned life insurance $ 147,391 $ 143,197 Premises and equipment, net 123,326 90,570 Prepaid expenses 5,356 3,348 Accrued interest receivable 17,488 16,824 Mortgage-servicing rights 9,070 9,373 Low-income housing equity investments 54,515 47,081 Real estate acquired in settlement of loans, net 1,183 1,189 Other 19,895 18,233 $ 378,224 $ 329,815 Other liabilities Accrued expenses $ 41,698 $ 36,754 Federal and state income taxes payable 6,829 4,728 Cashier’s checks 27,448 24,156 Advance payments by borrowers 4,867 10,335 Other 26,716 25,662 $ 107,558 $ 101,635
Schedule of the book value and aggregate fair value by major security type	The major components of investment securities were as follows: Amortized cost Gross unrealized gains Gross unrealized losses Estimated fair value Gross unrealized losses Less than 12 months 12 months or longer (dollars in thousands) Number of issues Fair value Amount Number of issues Fair value Amount September 30, 2017 Available-for-sale U.S. Treasury and federal agency obligations $ 182,535 $ 882 $ (1,299 ) $ 182,118 15 $ 91,203 $ (1,064 ) 2 $ 13,072 $ (235 ) Mortgage-related securities- FNMA, FHLMC and GNMA 1,131,245 2,127 (10,807 ) 1,122,565 84 686,186 (7,709 ) 29 138,051 (3,098 ) Mortgage revenue bond 15,427 — — 15,427 — — — — — — $ 1,329,207 $ 3,009 $ (12,106 ) $ 1,320,110 99 $ 777,389 $ (8,773 ) 31 $ 151,123 $ (3,333 ) December 31, 2016 Available-for-sale U.S. Treasury and federal agency obligations $ 193,515 $ 920 $ (2,154 ) $ 192,281 18 $ 123,475 $ (2,010 ) 1 $ 3,485 $ (144 ) Mortgage-related securities- FNMA, FHLMC and GNMA 909,408 1,742 (13,676 ) 897,474 88 709,655 (12,143 ) 13 47,485 (1,533 ) Mortgage revenue bond 15,427 — — 15,427 — — — — — — $ 1,118,350 $ 2,662 $ (15,830 ) $ 1,105,182 106 $ 833,130 $ (14,153 ) 14 $ 50,970 $ (1,677 )
Schedule of contractual maturities of available-for-sale securities	The contractual maturities of available-for-sale investment securities were as follows: September 30, 2017 Amortized cost Fair value (in thousands) Due in one year or less $ 9,998 $ 9,999 Due after one year through five years 77,138 77,331 Due after five years through ten years 81,464 81,170 Due after ten years 29,362 29,045 197,962 197,545 Mortgage-related securities-FNMA, FHLMC and GNMA 1,131,245 1,122,565 Total available-for-sale securities $ 1,329,207 $ 1,320,110
Schedule of components of loans receivable	The components of loans receivable were summarized as follows: September 30, 2017 December 31, 2016 (in thousands) Real estate: Residential 1-4 family $ 2,066,023 $ 2,048,051 Commercial real estate 745,583 800,395 Home equity line of credit 905,249 863,163 Residential land 18,611 18,889 Commercial construction 128,407 126,768 Residential construction 13,031 16,080 Total real estate 3,876,904 3,873,346 Commercial 589,669 692,051 Consumer 211,571 178,222 Total loans 4,678,144 4,743,619 Less: Deferred fees and discounts (1,863 ) (4,926 ) Allowance for loan losses (53,047 ) (55,533 ) Total loans, net $ 4,623,234 $ 4,683,160
Schedule of allowance for loan losses	The allowance for loan losses (balances and changes) and financing receivables were as follows: (in thousands) Residential 1-4 family Commercial real estate Home Residential land Commercial construction Residential construction Commercial loans Consumer loans Unallo-cated Total Three months ended September 30, 2017 Allowance for loan losses: Beginning balance $ 3,130 $ 18,840 $ 5,527 $ 1,264 $ 4,706 $ 9 $ 14,552 $ 8,328 $ — $ 56,356 Charge-offs (522 ) — — — — — (1,215 ) (3,160 ) — (4,897 ) Recoveries 33 — 164 259 — — 326 316 — 1,098 Provision 347 (2,800 ) (36 ) (141 ) 370 2 (595 ) 3,343 — 490 Ending balance $ 2,988 $ 16,040 $ 5,655 $ 1,382 $ 5,076 $ 11 $ 13,068 $ 8,827 $ — $ 53,047 Three months ended September 30, 2016 Allowance for loan losses: Beginning balance $ 4,384 $ 13,561 $ 7,836 $ 1,689 $ 6,993 $ 12 $ 17,085 $ 3,771 $ — $ 55,331 Charge-offs (373 ) — (108 ) — — — (833 ) (1,879 ) — (3,193 ) Recoveries 92 — 15 187 — — 347 211 — 852 Provision 154 1,289 (248 ) 23 179 (2 ) 2,457 1,895 — 5,747 Ending balance $ 4,257 $ 14,850 $ 7,495 $ 1,899 $ 7,172 $ 10 $ 19,056 $ 3,998 $ — $ 58,737 Nine months ended September 30, 2017 Allowance for loan losses: Beginning balance $ 2,873 $ 16,004 $ 5,039 $ 1,738 $ 6,449 $ 12 $ 16,618 $ 6,800 $ — $ 55,533 Charge-offs (528 ) — (14 ) (92 ) — — (3,477 ) (8,360 ) — (12,471 ) Recoveries 91 — 294 477 — — 922 970 — 2,754 Provision 552 36 336 (741 ) (1,373 ) (1 ) (995 ) 9,417 — 7,231 Ending balance $ 2,988 $ 16,040 $ 5,655 $ 1,382 $ 5,076 $ 11 $ 13,068 $ 8,827 $ — $ 53,047 September 30, 2017 Ending balance: individually evaluated for impairment $ 1,317 $ 72 $ 409 $ 373 $ — $ — $ 667 $ 30 $ 2,868 Ending balance: collectively evaluated for impairment $ 1,671 $ 15,968 $ 5,246 $ 1,009 $ 5,076 $ 11 $ 12,401 $ 8,797 $ — $ 50,179 Financing Receivables: Ending balance $ 2,066,023 $ 745,583 $ 905,249 $ 18,611 $ 128,407 $ 13,031 $ 589,669 $ 211,571 $ 4,678,144 Ending balance: individually evaluated for impairment $ 19,757 $ 1,281 $ 7,078 $ 2,385 $ — $ — $ 5,486 $ 67 $ 36,054 Ending balance: collectively evaluated for impairment $ 2,046,266 $ 744,302 $ 898,171 $ 16,226 $ 128,407 $ 13,031 $ 584,183 $ 211,504 $ 4,642,090 Nine months ended September 30, 2016 Allowance for loan losses: Beginning balance $ 4,186 $ 11,342 $ 7,260 $ 1,671 $ 4,461 $ 13 $ 17,208 $ 3,897 $ — $ 50,038 Charge-offs (433 ) — (108 ) — — — (3,138 ) (4,977 ) — (8,656 ) Recoveries 144 — 46 306 — — 907 686 — 2,089 Provision 360 3,508 297 (78 ) 2,711 (3 ) 4,079 4,392 — 15,266 Ending balance $ 4,257 $ 14,850 $ 7,495 $ 1,899 $ 7,172 $ 10 $ 19,056 $ 3,998 $ — $ 58,737 December 31, 2016 Ending balance: individually evaluated for impairment $ 1,352 $ 80 $ 215 $ 789 $ — $ — $ 1,641 $ 6 $ 4,083 Ending balance: collectively evaluated for impairment $ 1,521 $ 15,924 $ 4,824 $ 949 $ 6,449 $ 12 $ 14,977 $ 6,794 $ — $ 51,450 Financing Receivables: Ending balance $ 2,048,051 $ 800,395 $ 863,163 $ 18,889 $ 126,768 $ 16,080 $ 692,051 $ 178,222 $ 4,743,619 Ending balance: individually evaluated for impairment $ 19,854 $ 1,569 $ 6,158 $ 3,629 $ — $ — $ 20,539 $ 10 $ 51,759 Ending balance: collectively evaluated for impairment $ 2,028,197 $ 798,826 $ 857,005 $ 15,260 $ 126,768 $ 16,080 $ 671,512 $ 178,212 $ 4,691,860
Schedule of credit risk profile by internally assigned grade for loans	The credit risk profile by internally assigned grade for loans was as follows: September 30, 2017 December 31, 2016 (in thousands) Commercial real estate Commercial construction Commercial Commercial real estate Commercial construction Commercial Grade: Pass $ 647,599 $ 103,892 $ 539,336 $ 701,657 $ 102,955 $ 614,139 Special mention 44,088 22,500 25,053 65,541 — 25,229 Substandard 53,896 2,015 23,130 33,197 23,813 52,683 Doubtful — — 2,150 — — — Loss — — — — — — Total $ 745,583 $ 128,407 $ 589,669 $ 800,395 $ 126,768 $ 692,051
Schedule of credit risk profile based on payment activity for loans	The credit risk profile based on payment activity for loans was as follows: (in thousands) 30-59 days past due 60-89 days past due Greater than 90 days Total past due Current Total financing receivables Recorded investment> 90 days and accruing September 30, 2017 Real estate: Residential 1-4 family $ 3,905 $ 1,513 $ 4,452 $ 9,870 $ 2,056,153 $ 2,066,023 $ — Commercial real estate 5,414 — — 5,414 740,169 745,583 — Home equity line of credit 1,936 177 1,367 3,480 901,769 905,249 — Residential land 498 984 497 1,979 16,632 18,611 — Commercial construction — — — — 128,407 128,407 — Residential construction — — — — 13,031 13,031 — Commercial 1,095 218 648 1,961 587,708 589,669 — Consumer 2,508 1,465 1,178 5,151 206,420 211,571 — Total loans $ 15,356 $ 4,357 $ 8,142 $ 27,855 $ 4,650,289 $ 4,678,144 $ — December 31, 2016 Real estate: Residential 1-4 family $ 5,467 $ 2,338 $ 3,505 $ 11,310 $ 2,036,741 $ 2,048,051 $ — Commercial real estate 2,416 — — 2,416 797,979 800,395 — Home equity line of credit 1,263 381 1,342 2,986 860,177 863,163 — Residential land — — 255 255 18,634 18,889 — Commercial construction — — — — 126,768 126,768 — Residential construction — — — — 16,080 16,080 — Commercial 413 510 1,303 2,226 689,825 692,051 — Consumer 1,945 1,001 963 3,909 174,313 178,222 — Total loans $ 11,504 $ 4,230 $ 7,368 $ 23,102 $ 4,720,517 $ 4,743,619 $ —
Schedule of credit risk profile based on nonaccrual loans, accruing loans 90 days or more past due	The credit risk profile based on nonaccrual loans, accruing loans 90 days or more past due and TDR loans was as follows: (in thousands) September 30, 2017 December 31, 2016 Real estate: Residential 1-4 family $ 12,853 $ 11,154 Commercial real estate — 223 Home equity line of credit 4,000 3,080 Residential land 1,022 878 Commercial construction — — Residential construction — — Commercial 3,691 6,708 Consumer 1,791 1,282 Total nonaccrual loans $ 23,357 $ 23,325 Real estate: Residential 1-4 family $ — $ — Commercial real estate — — Home equity line of credit — — Residential land — — Commercial construction — — Residential construction — — Commercial — — Consumer — — Total accruing loans 90 days or more past due $ — $ — Real estate: Residential 1-4 family $ 11,592 $ 14,450 Commercial real estate 1,281 1,346 Home equity line of credit 5,250 4,934 Residential land 1,555 2,751 Commercial construction — — Residential construction — — Commercial 2,052 14,146 Consumer 67 10 Total troubled debt restructured loans not included above $ 21,797 $ 37,637
Schedule of the carrying amount and the total unpaid principal balance of impaired loans, with and without recorded allowance for loans losses	The total carrying amount and the total unpaid principal balance of impaired loans were as follows: September 30, 2017 Three months ended September 30, 2017 Nine months ended September 30, 2017 (in thousands) Recorded investment Unpaid principal balance Related Allowance Average recorded investment Interest income recognized* Average recorded investment Interest income recognized* With no related allowance recorded Real estate: Residential 1-4 family $ 9,987 $ 10,541 $ — $ 9,650 $ 70 $ 9,503 $ 230 Commercial real estate — — — — — 121 11 Home equity line of credit 1,565 1,889 — 1,918 32 2,108 97 Residential land 1,134 1,425 — 1,209 73 1,080 107 Commercial construction — — — — — — — Residential construction — — — — — — — Commercial 2,901 6,257 — 1,808 29 2,888 37 Consumer — — — — — — — $ 15,587 $ 20,112 $ — $ 14,585 $ 204 $ 15,700 $ 482 With an allowance recorded Real estate: Residential 1-4 family $ 9,770 $ 9,972 $ 1,317 $ 9,788 $ 97 $ 9,963 $ 333 Commercial real estate 1,281 1,281 72 1,284 13 1,292 41 Home equity line of credit 5,513 5,543 409 5,076 68 4,670 164 Residential land 1,251 1,251 373 1,251 12 1,620 73 Commercial construction — — — — — — — Residential construction — — — — — — — Commercial 2,585 2,595 667 2,482 225 4,104 694 Consumer 67 67 30 67 1 55 2 $ 20,467 $ 20,709 $ 2,868 $ 19,948 $ 416 $ 21,704 $ 1,307 Total Real estate: Residential 1-4 family $ 19,757 $ 20,513 $ 1,317 $ 19,438 $ 167 $ 19,466 $ 563 Commercial real estate 1,281 1,281 72 1,284 13 1,413 52 Home equity line of credit 7,078 7,432 409 6,994 100 6,778 261 Residential land 2,385 2,676 373 2,460 85 2,700 180 Commercial construction — — — — — — — Residential construction — — — — — — — Commercial 5,486 8,852 667 4,290 254 6,992 731 Consumer 67 67 30 67 1 55 2 $ 36,054 $ 40,821 $ 2,868 $ 34,533 $ 620 $ 37,404 $ 1,789 December 31, 2016 Three months ended September 30, 2016 Nine months ended September 30, 2016 (in thousands) Recorded investment Unpaid principal balance Related allowance Average recorded investment Interest income recognized* Average recorded investment Interest income recognized* With no related allowance recorded Real estate: Residential 1-4 family $ 9,571 $ 10,400 $ — $ 10,069 $ 65 $ 10,378 $ 268 Commercial real estate 223 228 — 1,206 — 1,177 — Home equity line of credit 1,500 1,900 — 1,220 6 1,035 15 Residential land 1,218 1,803 — 1,521 16 1,532 47 Commercial construction — — — — — — — Residential construction — — — — — — — Commercial 6,299 8,869 — 14,352 141 9,240 154 Consumer — — — 10 — 3 — $ 18,811 $ 23,200 $ — $ 28,378 $ 228 $ 23,365 $ 484 With an allowance recorded Real estate: Residential 1-4 family $ 10,283 $ 10,486 $ 1,352 $ 11,800 $ 119 $ 11,933 $ 356 Commercial real estate 1,346 1,346 80 2,444 — 1,939 — Home equity line of credit 4,658 4,712 215 4,165 36 3,470 91 Residential land 2,411 2,411 789 2,915 44 3,090 165 Commercial construction — — — — — — — Residential construction — — — — — — — Commercial 14,240 14,240 1,641 11,433 65 15,075 275 Consumer 10 10 6 11 — 12 — $ 32,948 $ 33,205 $ 4,083 $ 32,768 $ 264 $ 35,519 $ 887 Total Real estate: Residential 1-4 family $ 19,854 $ 20,886 $ 1,352 $ 21,869 $ 184 $ 22,311 $ 624 Commercial real estate 1,569 1,574 80 3,650 — 3,116 — Home equity line of credit 6,158 6,612 215 5,385 42 4,505 106 Residential land 3,629 4,214 789 4,436 60 4,622 212 Commercial construction — — — — — — — Residential construction — — — — — — — Commercial 20,539 23,109 1,641 25,785 206 24,315 429 Consumer 10 10 6 21 — 15 — $ 51,759 $ 56,405 $ 4,083 $ 61,146 $ 492 $ 58,884 $ 1,371 * Since loan was classified as impaired.
Schedule of loan modifications	Loan modifications that occurred during the third quarters and first nine months of 2017 and 2016 and the impact on the allowance for loan losses were as follows: Three months ended September 30, 2017 Nine months ended September 30, 2017 Number of contracts Outstanding recorded investment 1 Net increase in allowance Number of contracts Outstanding recorded investment 1 Net increase in allowance (dollars in thousands) Pre-modification Post-modification (as of period end) Pre-modification Post-modification (as of period end) Troubled debt restructurings Real estate: Residential 1-4 family 2 $ 83 $ 83 $ — 7 $ 955 $ 963 $ 45 Commercial real estate — — — — — — — — Home equity line of credit 15 862 862 184 28 1,386 1,372 277 Residential land — — — — — — — — Commercial construction — — — — — — — — Residential construction — — — — — — — — Commercial 1 330 330 38 2 672 672 38 Consumer — — — — 1 59 59 27 18 $ 1,275 $ 1,275 $ 222 38 $ 3,072 $ 3,066 $ 387 Three months ended September 30, 2016 Nine months ended September 30, 2016 Number of contracts Outstanding recorded 1 Net increase in allowance Number of contracts Outstanding recorded 1 Net increase in allowance (dollars in thousands) Pre-modification Post-modification (as of period end) Pre-modification Post-modification (as of period end) Troubled debt restructurings Real estate: Residential 1-4 family 2 $ 251 $ 251 $ 46 11 $ 2,239 $ 2,351 $ 305 Commercial real estate — — — — — — — — Home equity line of credit 12 1,268 1,268 237 30 2,705 2,705 492 Residential land — — — — 1 120 121 — Commercial construction — — — — — — — — Residential construction — — — — — — — — Commercial 6 3,462 3,462 53 14 20,119 20,119 723 Consumer — — — — — — — — 20 $ 4,981 $ 4,981 $ 336 56 $ 25,183 $ 25,296 $ 1,520 1 The reported balances include loans that became TDR during the period, and were fully paid-off, charged-off, or sold prior to period end.
Schedule of troubled debt restructuring on financing receivables that experienced default	Loans modified in TDRs that experienced a payment default of 90 days or more during the third quarters and first nine months of 2017 and 2016, and for which the payment of default occurred within one year of the modification, were as follows: Three months ended September 30, 2017 Nine months ended September 30, 2017 (dollars in thousands) Number of contracts Recorded investment Number of contracts Recorded investment Troubled debt restructurings that subsequently defaulted Real estate: Residential 1-4 family — $ — 1 $ 222 Commercial real estate — — — — Home equity line of credit — — — — Residential land — — — — Commercial construction — — — — Residential construction — — — — Commercial — — — — Consumer — — — — — $ — 1 $ 222 Three months ended September 30, 2016 Nine months ended September 30, 2016 (dollars in thousands) Number of contracts Recorded investment Number of contracts Recorded investment Troubled debt restructurings that Real estate: Residential 1-4 family 1 $ 239 1 $ 239 Commercial real estate — — — — Home equity line of credit — — — — Residential land — — — — Commercial construction — — — — Residential construction — — — — Commercial — — 1 25 Consumer — — — — 1 $ 239 2 $ 264
Schedule of amortized intangible assets	Changes in the carrying value of mortgage servicing rights were as follows: (in thousands) Gross 1 Accumulated amortization 1 Valuation allowance Net September 30, 2017 $ 18,463 $ (9,393 ) $ — $ 9,070 December 31, 2016 17,271 (7,898 ) — 9,373 1 Reflects the impact of loans paid in full. Changes related to mortgage servicing rights were as follows: Three months ended September 30 Nine months ended September 30 (in thousands) 2017 2016 2017 2016 Mortgage servicing rights Beginning balance $ 9,181 $ 9,016 $ 9,373 $ 8,884 Amount capitalized 394 824 1,192 1,944 Amortization (505 ) (649 ) (1,495 ) (1,637 ) Other-than-temporary impairment — — — — Carrying amount before valuation allowance 9,070 9,191 9,070 9,191 Valuation allowance for mortgage servicing rights Beginning balance — — — — Provision (recovery) — — — — Other-than-temporary impairment — — — — Ending balance — — — — Net carrying value of mortgage servicing rights $ 9,070 $ 9,191 $ 9,070 $ 9,191
Schedule of key assumptions used in estimating fair value	Key assumptions used in estimating the fair value of ASB’s mortgage servicing rights used in the impairment analysis were as follows: (dollars in thousands) September 30, 2017 December 31, 2016 Unpaid principal balance $ 1,212,730 $ 1,188,380 Weighted average note rate 3.94 % 3.96 % Weighted average discount rate 10.0 % 9.4 % Weighted average prepayment speed 9.2 % 8.5 % The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis: Significant unobservable input value (1) ($ in thousands) Fair value Valuation technique Significant unobservable input Range Weighted Average September 30, 2017 Residential loans $ 731 Fair value of collateral Appraised value less 7% selling cost 50-91% 69% Commercial loans 2,150 Fair value of collateral Appraised value 72-76% 76% Total loans $ 2,881 Real estate acquired in settlement of loans $ 93 Sales price Sales price less 7% selling cost N/A (2) December 31, 2016 Residential loans $ 2,468 Sales price Sales price 95-100% 97% Residential loans 287 Fair value of property or collateral Appraised value less 7% selling cost 42-65% 61% Home equity lines of credit 12 Fair value of property or collateral Appraised value less 7% selling cost N/A (2) Total loans $ 2,767 Real estate acquired in settlement of loans $ 1,189 Fair value of property or collateral Appraised value less 7% selling cost 100% 100% (1) Represent percent of outstanding principal balance. (2) N/A - Not applicable. There is one loan or property in each fair value measurement type.
Schedule of sensitivity analysis of fair value, transferor's interests in transferred financial assets	The sensitivity analysis of fair value of MSRs to hypothetical adverse changes of 25 and 50 basis points in certain key assumptions was as follows: (dollars in thousands) September 30, 2017 December 31, 2016 Prepayment rate: 25 basis points adverse rate change $ (878 ) $ (567 ) 50 basis points adverse rate change (1,847 ) (1,154 ) Discount rate: 25 basis points adverse rate change (111 ) (128 ) 50 basis points adverse rate change (220 ) (254 )
Schedule of securities sold under agreements to repurchase	The following tables present information about the securities sold under agreements to repurchase, including the related collateral received from or pledged to counterparties: (in millions) Gross amount of recognized liabilities Gross amount offset in the Balance Sheet Net amount of liabilities presented in the Balance Sheet Repurchase agreements September 30, 2017 $104 $— $104 December 31, 2016 93 — 93 Gross amount not offset in the Balance Sheet (in millions) Net amount of liabilities presented in the Balance Sheet Financial instruments Cash collateral pledged September 30, 2017 Financial institution $ — $ — $ — Government entities — — — Commercial account holders 104 165 — Total $ 104 $ 165 $ — December 31, 2016 Financial institution $ — $ — $ — Government entities 14 15 — Commercial account holders 79 101 — Total $ 93 $ 116 $ —
Schedule of notional and fair value of derivatives	The notional amount and fair value of ASB’s derivative financial instruments were as follows: September 30, 2017 December 31, 2016 (in thousands) Notional amount Fair value Notional amount Fair value Interest rate lock commitments $ 385 $ 7 $ 25,883 $ 421 Forward commitments 500 (2 ) 30,813 (177 )
Schedule of derivative financial instruments	ASB’s derivative financial instruments, their fair values and balance sheet location were as follows: Derivative Financial Instruments Not Designated as Hedging Instruments 1 September 30, 2017 December 31, 2016 (in thousands) Asset derivatives Liability derivatives Asset derivatives Liability Interest rate lock commitments $ 7 $ — $ 445 $ 24 Forward commitments — 2 8 185 $ 7 $ 2 $ 453 $ 209 1 Asset derivatives are included in other assets and liability derivatives are included in other liabilities in the balance sheets.
Schedule of derivative financial instruments and net gain or loss	The following table presents ASB’s derivative financial instruments and the amount and location of the net gains or losses recognized in ASB’s statements of income: Derivative Financial Instruments Not Designated as Hedging Instruments Location of net gains (losses) recognized in the Statement of Income Three months ended September 30 Nine months ended September 30 (in thousands) 2017 2016 2017 2016 Interest rate lock commitments Mortgage banking income $ (119 ) $ 48 $ (414 ) $ 459 Forward commitments Mortgage banking income (90 ) 103 175 (134 ) $ (209 ) $ 151 $ (239 ) $ 325

Credit agreements and long-te25

Credit agreements and long-term debt (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Schedule of Changes in Long-term Debt	On June 29, 2017, the Department of Budget and Finance of the State of Hawaii (Department) for the benefit of the Utilities, issued, at par: Refunding Series 2017A Special Purpose Revenue Bonds Refunding Series 2017B Special Purpose Revenue Bonds Aggregate principal amount $125 million $140 million Fixed coupon interest rate 3.10% 4.00% Maturity date May 1, 2026 March 1, 2037 Department loaned the proceeds to: Hawaiian Electric $62 million $100 million Hawaii Electric Light $8 million $20 million Maui Electric $55 million $20 million Proceeds from the sale were applied to redeem at par bonds previously issued by the Department for the benefit of the Utilities: Refunding Series 2007B Special Purpose Revenue Bonds Series 2007A Special Purpose Revenue Bonds Aggregate principal amount $125 million $140 million Fixed coupon interest rate 4.60% 4.65% Maturity date May 1, 2026 March 1, 2037

Shareholders' equity (Tables)

Shareholders' equity (Tables)	9 Months Ended
	Sep. 30, 2017
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 (losses) on derivatives Retirement benefit plans AOCI Balance, December 31, 2016 $ (7,931 ) $ (454 ) $ (24,744 ) $ (33,129 ) $ (454 ) $ 132 $ (322 ) Current period other comprehensive income 2,452 454 1,003 3,909 454 67 521 Balance, September 30, 2017 $ (5,479 ) $ — $ (23,741 ) $ (29,220 ) $ — $ 199 $ 199 Balance, December 31, 2015 $ (1,872 ) $ (54 ) $ (24,336 ) $ (26,262 ) $ — $ 925 $ 925 Current period other comprehensive income 7,837 459 943 9,239 405 7 412 Balance, September 30, 2016 $ 5,965 $ 405 $ (23,393 ) $ (17,023 ) $ 405 $ 932 $ 1,337
Schedule of reclassifications out of accumulated other comprehensive income/(loss)	Reclassifications out of AOCI were as follows: Amount reclassified from AOCI Three months ended September 30 Nine months ended September 30 Affected line item in the (in thousands) 2017 2016 2017 2016 Statements of Income / Balance Sheets HEI consolidated Net realized gains on securities included in net income $ — $ — $ — $ (360 ) Revenues-bank (net gains on sales of securities) Derivatives qualifying as cash flow hedges: Window forward contracts — (173 ) 454 (173 ) Property, plant and equipment-electric utilities Interest rate contracts (settled in 2011) — — — 54 Interest expense Retirement benefit plans: Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost 3,942 3,641 11,793 10,877 See Note 7 for additional details Impact of D&Os of the PUC included in regulatory assets (3,596 ) (3,311 ) (10,790 ) (9,934 ) See Note 7 for additional details Total reclassifications $ 346 $ 157 $ 1,457 $ 464 Hawaiian Electric consolidated Derivatives qualifying as cash flow hedges: Window forward contracts $ — $ (173 ) $ 454 $ (173 ) Construction in progress Retirement benefit plans: Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost 3,618 3,314 10,857 9,941 See Note 7 for additional details Impact of D&Os of the PUC included in regulatory assets (3,596 ) (3,311 ) (10,790 ) (9,934 ) See Note 7 for additional details Total reclassifications $ 22 $ (170 ) $ 521 $ (166 )

Retirement benefits (Tables)

Retirement benefits (Tables)	9 Months Ended
	Sep. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Schedule of components of net periodic benefit cost for consolidated HEI	The components of NPPC and NPBC for HEI consolidated and Hawaiian Electric consolidated were as follows: Three months ended September 30 Nine months ended September 30 Pension benefits Other benefits Pension benefits Other benefits (in thousands) 2017 2016 2017 2016 2017 2016 2017 2016 HEI consolidated Service cost $ 16,271 $ 15,126 $ 843 $ 831 $ 48,635 $ 45,430 $ 2,530 $ 2,499 Interest cost 20,304 20,396 2,363 2,417 60,881 61,154 7,089 7,254 Expected return on plan assets (25,689 ) (24,640 ) (3,078 ) (3,064 ) (77,056 ) (73,920 ) (9,248 ) (9,207 ) Amortization of net prior service gain (14 ) (15 ) (448 ) (449 ) (41 ) (43 ) (1,345 ) (1,345 ) Amortization of net actuarial loss 6,638 6,228 283 200 19,858 18,605 848 603 Net periodic pension/benefit cost 17,510 17,095 (37 ) (65 ) 52,277 51,226 (126 ) (196 ) Impact of PUC D&Os (4,534 ) (4,653 ) 346 336 (14,557 ) (13,464 ) 1,019 1,008 Net periodic pension/benefit cost (adjusted for impact of PUC D&Os) $ 12,976 $ 12,442 $ 309 $ 271 $ 37,720 $ 37,762 $ 893 $ 812 Hawaiian Electric consolidated Service cost $ 15,764 $ 14,699 $ 839 $ 821 $ 47,294 $ 44,097 $ 2,515 $ 2,463 Interest cost 18,659 18,702 2,279 2,334 55,974 56,106 6,837 7,003 Expected return on plan assets (23,973 ) (22,908 ) (3,037 ) (3,023 ) (71,919 ) (68,725 ) (9,110 ) (9,072 ) Amortization of net prior service loss (gain) 2 3 (451 ) (451 ) 6 10 (1,353 ) (1,353 ) Amortization of net actuarial loss 6,098 5,674 275 198 18,294 17,020 826 595 Net periodic pension/benefit cost 16,550 16,170 (95 ) (121 ) 49,649 48,508 (285 ) (364 ) Impact of PUC D&Os (4,534 ) (4,653 ) 346 336 (14,557 ) (13,464 ) 1,019 1,008 Net periodic pension/benefit cost (adjusted for impact of PUC D&Os) $ 12,016 $ 11,517 $ 251 $ 215 $ 35,092 $ 35,044 $ 734 $ 644

Share-based compensation (Table

Share-based compensation (Tables)	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of share-based compensation expense and related income tax benefit	Share-based compensation expense and the related income tax benefit were as follows: Three months ended September 30 Nine months ended September 30 (in millions) 2017 2016 2017 2016 HEI consolidated Share-based compensation expense 1 $ 1.1 $ 1.6 $ 4.4 $ 3.6 Income tax benefit 0.4 0.5 1.5 1.2 Hawaiian Electric consolidated Share-based compensation expense 1 0.4 0.5 1.6 1.0 Income tax benefit 0.2 0.2 0.6 0.4 1 For the three months and nine months ended September 30, 2017 and 2016, the Company has not capitalized any share-based compensation.
Schedule of common stock granted to a nonemployee director under the 2011 Director Plan	HEI granted HEI common stock to nonemployee directors of HEI, Hawaiian Electric and ASB under the 2011 Director Plan as follows: Three months ended September 30 Nine months ended September 30 ($ in millions) 2017 2016 2017 2016 Shares granted — 19,846 35,770 19,846 Fair value $ — $ 0.6 $ 1.2 $ 0.6 Income tax benefit — 0.2 0.5 0.2
Schedule of restricted stock units	Information about HEI’s grants of restricted stock units was as follows: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 Shares (1) Shares (1) Shares (1) Shares (1) Outstanding, beginning of period 206,483 $ 31.50 225,752 $ 29.59 220,683 $ 29.57 210,634 $ 28.82 Granted — — 766 30.65 97,873 33.47 95,048 29.91 Vested (687 ) 24.48 (4,419 ) 27.26 (89,681 ) 28.84 (83,583 ) 27.88 Forfeited — — (2,352 ) 29.69 (23,079 ) 31.50 (2,352 ) 29.69 Outstanding, end of period 205,796 $ 31.53 219,747 $ 29.64 205,796 $ 31.53 219,747 $ 29.64 Total weighted-average grant-date fair value of shares granted ($ millions) $ — $ — $ 3.3 $ 2.8 (1) Weighted-average grant-date fair value per share based on the average price of HEI common stock on the date of grant.
Schedule of Long-Term Incentive Plan (LTIP) linked to total return to shareholders	Information about HEI’s LTIP grants linked to TSR was as follows: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 Shares (1) Shares (1) Shares (1) Shares (1) Outstanding, beginning of period 33,770 $ 39.51 83,947 $ 22.95 83,106 $ 22.95 162,500 $ 27.66 Granted (target level) — — — — 37,204 39.51 — — Vested (issued or unissued and cancelled) — — — — (83,106 ) 22.95 (78,553 ) 32.69 Forfeited — — (175 ) 22.95 (3,434 ) 39.51 (175 ) 22.95 Outstanding, end of period 33,770 $ 39.51 83,772 $ 22.95 33,770 $ 39.51 83,772 $ 22.95 Total weighted-average grant-date fair value of shares granted ($ millions) $ — $ — $ 1.5 $ — (1) Weighted-average grant-date fair value per share determined using a Monte Carlo simulation model.
Schedule of Long-Term Incentive Program fair value awards granted	The following table summarizes the assumptions used to determine the fair value of the LTIP awards linked to TSR and the resulting fair value of LTIP awards granted: 2017 Risk-free interest rate 1.46 % Expected life in years 3 Expected volatility 20.1 % Range of expected volatility for Peer Group 15.4% to 26.0% Grant date fair value (per share) $39.51
Schedule of Long-Term Incentive Plan (LTIP) linked to other performance conditions	Information about HEI’s LTIP awards payable in shares linked to other performance conditions was as follows: Three months ended September 30 Nine months ended September 30 2017 2016 2017 2016 Shares (1) Shares (1) Shares (1) Shares (1) Outstanding, beginning of period 135,078 $ 33.47 113,550 $ 25.18 109,816 $ 25.18 222,647 $ 26.02 Granted (target level) — — — — 148,818 33.47 — — Vested (issued) — — — — (109,816 ) 25.18 (109,097 ) 26.89 Forfeited — — (699 ) 25.19 (13,740 ) 33.48 (699 ) 25.19 Outstanding, end of period 135,078 $ 33.47 112,851 $ 25.18 135,078 $ 33.47 112,851 $ 25.18 Total weighted-average grant-date fair value of shares granted (at target performance levels) ($ millions) $ — $ — $ 5.0 $ — (1) Weighted-average grant-date fair value per share based on the average price of HEI common stock on the date of grant.

Cash flows (Tables)

Cash flows (Tables)	9 Months Ended
	Sep. 30, 2017
Supplemental Cash Flow Elements [Abstract]
Schedule of supplemental disclosures of cash and noncash activity	Nine months ended September 30 2017 2016 (in millions) Supplemental disclosures of cash flow information HEI consolidated Interest paid to non-affiliates $ 62 $ 61 Income taxes paid (including refundable credits) 32 19 Income taxes refunded (including refundable credits) — 45 Hawaiian Electric consolidated Interest paid to non-affiliates 45 43 Income taxes paid (including refundable credits) 9 — Income taxes refunded (including refundable credits) — 20 Supplemental disclosures of noncash activities HEI consolidated Property, plant and equipment Estimated fair value of noncash contributions in aid of construction (investing) 3 12 Unpaid invoices and accruals for capital expenditures (investing) Change during the period 31 (6 ) Balance, end of period 116 64 Common stock dividends reinvested in HEI common stock (financing) 1 — 17 Loans transferred from held for investment to held for sale (investing) 41 14 Common stock issued (gross) for director and executive/management compensation (financing) 2 11 7 Obligations to fund low income housing investments (investing) 10 — Hawaiian Electric consolidated Electric utility property, plant and equipment Estimated fair value of noncash contributions in aid of construction (investing) 3 12 Unpaid invoices and accruals for capital expenditures (investing) Change during the period 29 (7 ) Balance, end of period 113 63 1 The amounts shown represent common stock dividends reinvested in HEI common stock under the HEI Dividend Reinvestment and Stock Purchase Plan (DRIP) in noncash transactions. 2 The amounts shown represent the market value of common stock issued for director and executive/management compensation and withheld to satisfy statutory tax liabilities.

Fair value measurements (Tables

Fair value measurements (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of estimated fair values of certain of the Company's financial instruments	The following table presents the carrying or notional amount, fair value and placement in the fair value hierarchy of the Company’s financial instruments. For stock in Federal Home Loan Bank, the carrying amount is a reasonable estimate of fair value because it can only be redeemed at par. For bank-owned life insurance, the carrying amount is the cash surrender value of the insurance policies, which is a reasonable estimate of fair value. For financial liabilities such as noninterest-bearing demand, interest-bearing demand, and savings and money market deposits, the carrying amount is a reasonable estimate of fair value as these liabilities have no stated maturity. Estimated fair value Carrying or notional amount Quoted prices in active markets for identical assets Significant other observable inputs Significant unobservable inputs (in thousands) (Level 1) (Level 2) (Level 3) Total September 30, 2017 Financial assets HEI consolidated Available-for-sale investment securities $ 1,320,110 $ — $ 1,304,683 $ 15,427 $ 1,320,110 Stock in Federal Home Loan Bank 9,706 — 9,706 — 9,706 Loans receivable, net 4,638,962 13,260 2,468 4,791,209 4,806,937 Mortgage servicing rights 9,070 — — 12,091 12,091 Bank-owned life insurance 147,391 — 147,391 — 147,391 Derivative assets 8,399 — 591 — 591 Hawaiian Electric consolidated Derivative assets-window forward contracts 8,014 — 584 — 584 Financial liabilities HEI consolidated Deposit liabilities 5,752,326 — 5,748,858 — 5,748,858 Short-term borrowings—other than bank 24,498 — 24,498 — 24,498 Other bank borrowings 153,552 — 153,717 — 153,717 Long-term debt, net—other than bank 1,618,446 — 1,747,972 — 1,747,972 Derivative liabilities 500 2 — — 2 Hawaiian Electric consolidated Short-term borrowings 6,000 — 6,000 — 6,000 Long-term debt, net 1,318,623 — 1,441,855 — 1,441,855 December 31, 2016 Financial assets HEI consolidated Money market funds $ 13,085 $ — $ 13,085 $ — $ 13,085 Available-for-sale investment securities 1,105,182 — 1,089,755 15,427 1,105,182 Stock in Federal Home Loan Bank 11,218 — 11,218 — 11,218 Loans receivable, net 4,701,977 — 13,333 4,839,493 4,852,826 Mortgage servicing rights 9,373 — — 13,216 13,216 Bank-owned life insurance 143,197 — 143,197 — 143,197 Derivative assets 23,578 — 453 — 453 Financial liabilities HEI consolidated Deposit liabilities 5,548,929 — 5,546,644 — 5,546,644 Other bank borrowings 192,618 — 193,991 — 193,991 Long-term debt, net—other than bank 1,619,019 — 1,704,717 — 1,704,717 Derivative liabilities 53,852 129 823 — 952 Hawaiian Electric consolidated Long-term debt, net 1,319,260 — 1,399,490 — 1,399,490 Derivative liabilities-window forward contracts 20,734 — 743 — 743
Schedule of assets measured at fair value on a recurring basis	Assets and liabilities measured at fair value on a recurring basis were as follows: September 30, 2017 December 31, 2016 Fair value measurements using Fair value measurements using (in thousands) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Money market funds (“other” segment) $ — $ — $ — $ — $ 13,085 $ — Available-for-sale investment securities (bank segment) Mortgage-related securities-FNMA, FHLMC and GNMA $ — $ 1,122,565 $ — $ — $ 897,474 $ — U.S. Treasury and federal agency obligations — 182,118 — — 192,281 — Mortgage revenue bond — — 15,427 — — 15,427 $ — $ 1,304,683 $ 15,427 $ — $ 1,089,755 $ 15,427 Derivative assets Interest rate lock commitments (bank segment) 1 $ — $ 7 $ — $ — $ 445 $ — Forward commitments (bank segment) 1 — — — — 8 — Window forward contracts (electric utility segment) 2 — 584 — — — — $ — $ 591 $ — $ — $ 453 $ — Derivative liabilities Interest rate lock commitments (bank segment) 1 $ — $ — $ — $ — $ 24 $ — Forward commitments (bank segment) 1 2 — — 129 56 — Window forward contracts (electric utility segment) 2 — — — — 743 — $ 2 $ — $ — $ 129 $ 823 $ — 1 Derivatives are carried at fair value with changes in value reflected in the balance sheet in other assets or other liabilities and included in mortgage banking income. 2 Derivatives are included in noncurrent regulatory assets and/or liabilities in the balance sheets.
Schedule of changes in Level 3 assets and liabilities measured at fair value on a recurring basis	The changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows: Three months ended September 30 Nine months ended September 30 Mortgage revenue bond 2017 2016 2017 2016 (in thousands) Beginning balance $ 15,427 $ — $ 15,427 $ — Principal payments received — — — — Purchases — — — — Unrealized gain (loss) included in other comprehensive income — — — — Ending balance $ 15,427 $ — $ 15,427 $ —
Schedule of assets measured at fair value on a nonrecurring basis	The carrying value of assets measured at fair value on a nonrecurring basis were as follows: Fair value measurements (in thousands) Balance Level 1 Level 2 Level 3 September 30, 2017 Loans $ 2,881 $ — $ — $ 2,881 Real estate acquired in settlement of loans 93 — — 93 December 31, 2016 Loans 2,767 — — 2,767 Real estate acquired in settlement of loans 1,189 — — 1,189
Schedule of significant unobservable inputs used in the fair value measurement	Key assumptions used in estimating the fair value of ASB’s mortgage servicing rights used in the impairment analysis were as follows: (dollars in thousands) September 30, 2017 December 31, 2016 Unpaid principal balance $ 1,212,730 $ 1,188,380 Weighted average note rate 3.94 % 3.96 % Weighted average discount rate 10.0 % 9.4 % Weighted average prepayment speed 9.2 % 8.5 % The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis: Significant unobservable input value (1) ($ in thousands) Fair value Valuation technique Significant unobservable input Range Weighted Average September 30, 2017 Residential loans $ 731 Fair value of collateral Appraised value less 7% selling cost 50-91% 69% Commercial loans 2,150 Fair value of collateral Appraised value 72-76% 76% Total loans $ 2,881 Real estate acquired in settlement of loans $ 93 Sales price Sales price less 7% selling cost N/A (2) December 31, 2016 Residential loans $ 2,468 Sales price Sales price 95-100% 97% Residential loans 287 Fair value of property or collateral Appraised value less 7% selling cost 42-65% 61% Home equity lines of credit 12 Fair value of property or collateral Appraised value less 7% selling cost N/A (2) Total loans $ 2,767 Real estate acquired in settlement of loans $ 1,189 Fair value of property or collateral Appraised value less 7% selling cost 100% 100% (1) Represent percent of outstanding principal balance. (2) N/A - Not applicable. There is one loan or property in each fair value measurement type.

Segment financial information31

Segment financial information (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)MW	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Segment financial information
Total revenues		$ 673,185	$ 646,055	$ 1,897,028	$ 1,763,259
Income (loss) before income taxes		95,139	179,205	206,347	301,242
Income taxes (benefit)		34,595	51,592	72,003	96,203
Net income		60,544	127,613	134,344	205,039
Preferred stock dividends of subsidiaries		471	471	1,417	1,417
Net income for common stock		60,073	127,142	132,927	203,622
Total assets	$ 12,742,850	12,742,850		12,742,850		$ 12,425,506
Hamakua Energy Partners, L.P. (HEP)
Segment financial information
Power produced by power plant (in megawatts) | MW	60
Revenues from external customers
Segment financial information
Total revenues		673,185	646,055	1,897,028	1,763,259
Intersegment revenues (eliminations)
Segment financial information
Total revenues		0	0	0	0
Electric utility
Segment financial information
Total revenues		598,769	572,253	1,674,255	1,549,700
Income (loss) before income taxes		74,990	75,617	150,715	174,376
Income taxes (benefit)		27,005	28,145	54,623	64,682
Net income		47,985	47,472	96,092	109,694
Preferred stock dividends of subsidiaries		498	498	1,496	1,496
Net income for common stock		47,487	46,974	94,596	108,198
Total assets	$ 6,107,501	6,107,501		6,107,501		5,975,428
Electric utility | Revenues from external customers
Segment financial information
Total revenues		598,756	572,208	1,674,158	1,549,602
Electric utility | Intersegment revenues (eliminations)
Segment financial information
Total revenues		13	45	97	98
Bank
Segment financial information
Total revenues		74,289	73,708	222,474	213,297
Income (loss) before income taxes		26,764	22,727	75,720	62,545
Income taxes (benefit)		9,172	7,623	25,582	21,483
Net income		17,592	15,104	50,138	41,062
Preferred stock dividends of subsidiaries		0	0	0	0
Net income for common stock		17,592	15,104	50,138	41,062
Total assets	6,618,907	6,618,907		6,618,907		6,421,357
Bank | Revenues from external customers
Segment financial information
Total revenues		74,289	73,708	222,474	213,297
Bank | Intersegment revenues (eliminations)
Segment financial information
Total revenues		0	0	0	0
Other
Segment financial information
Total revenues		127	94	299	262
Income (loss) before income taxes		(6,615)	80,861	(20,088)	64,321
Income taxes (benefit)		(1,582)	15,824	(8,202)	10,038
Net income		(5,033)	65,037	(11,886)	54,283
Preferred stock dividends of subsidiaries		(27)	(27)	(79)	(79)
Net income for common stock		(5,006)	65,064	(11,807)	54,362
Total assets	$ 16,442	16,442		16,442		$ 28,721
Other | Revenues from external customers
Segment financial information
Total revenues		140	139	396	360
Other | Intersegment revenues (eliminations)
Segment financial information
Total revenues		$ (13)	$ (45)	$ (97)	$ (98)

Electric utility segment - Taxe

Electric utility segment - Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Hawaiian Electric Company, Inc. and Subsidiaries
Revenue taxes
Revenue taxes included in operating revenues and in taxes other than income taxes expense	$ 54	$ 51	$ 150	$ 138

Electric utility segment - Unco

Electric utility segment - Unconsolidated variable interest entities (Details)	1 Months Ended	9 Months Ended
	Mar. 31, 2004USD ($)security	Sep. 30, 2017USD ($)agreemententity	Dec. 31, 2016USD ($)
Hawaiian Electric Company
Power purchase agreement
Number of power purchase agreements (PPAs) (in agreements) | agreement		5
Number of entities currently required to be consolidated as VIEs (in entities) | entity		0
Number of IPPs | entity		3
Number of firm capacity producers declining to provide financial information to determine primary beneficiary status (in entities) | entity		2
Minimum potential number of IPP entities consolidated into company in the future (in entities) | entity		1
Variable Interest Entity, Not Primary Beneficiary
Unconsolidated variable interest entities
Investment in 2004 Debentures		$ 51,500,000	$ 51,500,000
Interest income		$ 2,500,000
Variable Interest Entity, Not Primary Beneficiary | Hawaiian Electric Company
Unconsolidated variable interest entities
Principal amount of 2004 Debentures	$ 31,500,000
Percent of ownership in Trust III (as a percent)		100.00%
Variable Interest Entity, Not Primary Beneficiary | Hawaiian Electric Company | 2004 Trust Preferred Securities
Unconsolidated variable interest entities
Number of 2004 Trust Preferred Securities issued (in securities) | security	2,000,000
Dividend rate on 2004 Trust Preferred Securities (as a percent)	6.50%
Aggregate Liquidation preference	$ 50,000,000
Balance of Trust Securities		$ 50,000,000	50,000,000
Dividend distributions on Trust Preferred Securities		2,400,000
Variable Interest Entity, Not Primary Beneficiary | Hawaiian Electric Company | Trust Common Securities
Unconsolidated variable interest entities
Aggregate Liquidation preference	1,500,000
Balance of Trust Securities		1,500,000	$ 1,500,000
Common dividend		$ 75,000
Variable Interest Entity, Not Primary Beneficiary | Hawaii Electric Light Company, Inc. (HELCO)
Unconsolidated variable interest entities
Principal amount of 2004 Debentures	10,000,000
Variable Interest Entity, Not Primary Beneficiary | Maui Electric
Unconsolidated variable interest entities
Principal amount of 2004 Debentures	$ 10,000,000

Electric utility segment - Powe

Electric utility segment - Power purchase agreements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Regulatory Projects and Legal Obligations [Line Items]
Purchased power	$ 161,000	$ 158,000	$ 441,000	$ 413,000
Hawaiian Electric Company
Regulatory Projects and Legal Obligations [Line Items]
Purchased power	123,893	118,751	340,498	313,730
Hawaiian Electric Company | Kalaeloa Partners, L.P. (Kalaeloa)
Regulatory Projects and Legal Obligations [Line Items]
Purchased power	48,000	44,000	136,000	109,000
Hawaiian Electric Company | AES Hawaii
Regulatory Projects and Legal Obligations [Line Items]
Purchased power	39,000	38,000	103,000	112,000
Hawaiian Electric Company | HPOWER
Regulatory Projects and Legal Obligations [Line Items]
Purchased power	18,000	19,000	51,000	52,000
Hawaiian Electric Company | Puna Geothermal Venture
Regulatory Projects and Legal Obligations [Line Items]
Purchased power	10,000	7,000	28,000	19,000
Hawaiian Electric Company | Hamakua Energy Partners, L.P. (HEP)
Regulatory Projects and Legal Obligations [Line Items]
Purchased power	8,000	8,000	25,000	23,000
Hawaiian Electric Company | Other IPPs
Regulatory Projects and Legal Obligations [Line Items]
Purchased power	$ 38,000	$ 42,000	$ 98,000	$ 98,000

Electric utility segment - Comm

Electric utility segment - Commitments and contingencies (Details)	Oct. 12, 2017USD ($)	Aug. 21, 2017USD ($)	Jul. 11, 2017	Dec. 16, 2016USD ($)	Sep. 19, 2016USD ($)	Aug. 11, 2016USD ($)	Aug. 01, 2016	Jan. 05, 2016USD ($)	Jun. 30, 2017USD ($)$ / kWh	May 31, 2017USD ($)	Jul. 31, 2016MW	Sep. 30, 2015USD ($)	Jun. 30, 2015MW	Aug. 31, 2012MW	May 31, 2012MW	Oct. 31, 2004MW	Oct. 31, 1988MW	Mar. 31, 1988MW	Sep. 30, 2017USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)
Regulatory Projects and Legal Obligations [Line Items]
Power purchase agreement, termination period							60 days
Purchase commitment, period (in years)																		30 years
Minimum power volume required (in megawatts) | MW														186				180
Additional capacity requirement (in megawatts) | MW													9
ERP/EAM cost recovery cap						$ 77,600,000
Public utility, ERP/EAM required pass through savings to customers						$ 244,000,000
ERP/EAM project service period (in years)						12 years
AFUDC rate (as a percent)						1.75%
ERP/EAM implementation project costs																					$ 23,600,000
ERP/EAM implementation project, operations and management																					4,600,000
ERP/EAM implementation project, capital costs																					1,400,000
ERP/EAM implementation project, deferred costs																					17,600,000
Schofield generating station facility capacity (in megawatts) | MW														50
Schofield generating station project, budgetary cap								$ 157,300,000				$ 167,000,000
Percent of costs recoverable through recovery mechanisms other than base rates (as a percent)												90.00%
Decrease in project costs								$ 9,700,000
Project lease term (in years)								35 years
Project cost incurred																							$ 105,700,000
West Lock PV Project, energy generated (in megawatts) | MW											20
West Lock PV Project, cost cap									$ 67,000,000
West Lock PV Project, maximum energy cost (in dollars per kilowatt hours) | $ / kWh									0.0956
West Lock PV Project, project costs incurred																						$ 700,000
Accounts receivable and unbilled revenues, net																			$ 264,426,000	$ 264,426,000	264,426,000	264,426,000	264,426,000	$ 237,950,000
Environmental regulation
Decoupling order, service reliability performance, historical measurement period (in years)										10 years
Maximum penalty as a percent of equity (as a percent)										0.20%
Service reliability, maximum penalty										$ 6,000,000
Dead band percentage above or below the target (as a percent)										3.00%
Maximum incentive, percent of return on equity (as a percent)										0.08%
Call center performance, maximum penalty										$ 1,200,000
Threshold of capital expenditures in excess of customer contributions for qualification for major project interim recovery										$ 2,500,000
General rate increase, revenue				$ 106,400,000
General rate increase, revenue, percent				6.90%
General rate increase, revenue, calculation assumptions, rate of return				8.28%
General rate increase, revenue, calculation assumptions, rate of return, ROACE				10.60%
General rate increase, revenue, calculation assumptions, rate of return, common equity capitalization percentage				57.40%
General rate increase, revenue, calculation assumptions, rate base				$ 2,000,000,000
Requirement for application for general rate case (in years)																				3 years
PCB Contamination
Environmental regulation
Valuation allowances and reserves																			4,900,000	$ 4,900,000	4,900,000	4,900,000	4,900,000
Hu Honua Bioenergy, LLC
Regulatory Projects and Legal Obligations [Line Items]
Minimum power volume required (in megawatts) | MW															21.5
Hawaiian Telcom
Regulatory Projects and Legal Obligations [Line Items]
Accounts receivable and unbilled revenues, net																			22,200,000	22,200,000	22,200,000	22,200,000	22,200,000
Reserve for interest accrued																			4,900,000	4,900,000	4,900,000	4,900,000	4,900,000
Hawaiian Electric Company | Hawaiian Telcom
Regulatory Projects and Legal Obligations [Line Items]
Accounts receivable and unbilled revenues, net																			14,900,000	14,900,000	14,900,000	14,900,000	14,900,000
Hawaii Electric Light Company, Inc. (HELCO)
Environmental regulation
General rate increase, revenue					$ 19,300,000
General rate increase, revenue, percent					6.50%
General rate increase, revenue, calculation assumptions, rate of return					8.44%
General rate increase, revenue, calculation assumptions, rate of return, ROACE					10.60%
General rate increase, ROACE, percentage decrease			0.25%
Stipulated ROACE rate		9.50%	9.75%
Interim general rate increase granted		$ 9,900,000
Hawaii Electric Light Company, Inc. (HELCO) | Hawaiian Telcom
Regulatory Projects and Legal Obligations [Line Items]
Accounts receivable and unbilled revenues, net																			6,000,000	6,000,000	6,000,000	6,000,000	6,000,000
Maui Electric
Environmental regulation
Additional accrued investigation and estimated cleanup costs																			3,100,000	3,100,000	3,100,000	3,100,000	3,100,000
Maui Electric | Subsequent Event
Environmental regulation
General rate increase, revenue	$ 30,100,000
General rate increase, revenue, percent	9.30%
General rate increase, revenue, calculation assumptions, rate of return	8.05%
General rate increase, revenue, calculation assumptions, rate of return, ROACE	10.60%
General rate increase, revenue, calculation assumptions, rate of return, common equity capitalization percentage	56.90%
General rate increase, revenue, calculation assumptions, rate base	$ 473,000,000
Conditional general rate increase, revenue	$ 46,600,000
Conditional general rate increase, revenue, percentage	14.30%
Maui Electric | Hawaiian Telcom
Regulatory Projects and Legal Obligations [Line Items]
Accounts receivable and unbilled revenues, net																			1,300,000	1,300,000	1,300,000	1,300,000	1,300,000
Hawaiian Electric Company, Inc. and Subsidiaries
Environmental regulation
Reversal of asset retirement obligations																			24,400,000
Asset retirement obligation																			$ 700,000	$ 700,000	$ 700,000	$ 700,000	$ 700,000		$ 26,200,000
Kalaeloa Partners, L.P. (Kalaeloa) | Hawaiian Electric Company
Regulatory Projects and Legal Obligations [Line Items]
Power purchase capacity that Increases from initial capacity (in megawatts) | MW																	180
Power purchase agreement term																	25 years
Increased power purchase commitment capacity (in megawatts) | MW																208

Electric utility segment - Annu

Electric utility segment - Annual decoupling filings summary (Details) $ in Millions	May 31, 2017USD ($)
Hawaiian Electric Company
Regulatory Projects and Legal Obligations [Line Items]
2017 Annual incremental RAM adjusted revenues	$ 12.7
Annual change in accrued earnings sharing credits	0
Annual change in accrued RBA balance as of December 31, 2016 (and associated revenue taxes) (refunded)	(2.4)
Net annual incremental amount to be collected under the tariffs	10.3
HELCO
Regulatory Projects and Legal Obligations [Line Items]
2017 Annual incremental RAM adjusted revenues	3.2
Annual change in accrued earnings sharing credits	0
Annual change in accrued RBA balance as of December 31, 2016 (and associated revenue taxes) (refunded)	(2.5)
Net annual incremental amount to be collected under the tariffs	0.7
Maui Electric
Regulatory Projects and Legal Obligations [Line Items]
2017 Annual incremental RAM adjusted revenues	1.6
Annual change in accrued earnings sharing credits	0
Annual change in accrued RBA balance as of December 31, 2016 (and associated revenue taxes) (refunded)	(0.2)
Net annual incremental amount to be collected under the tariffs	$ 1.4

Electric utility segment - Cond

Electric utility segment - Condensed consolidating statement of income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Condensed Income Statements, Captions [Line Items]
Revenues	$ 673,185	$ 646,055	$ 1,897,028	$ 1,763,259
Expenses
Purchased power	161,000	158,000	441,000	413,000
Total expenses	563,640	540,613	1,643,725	1,503,511
Total operating income	109,545	105,442	253,303	259,748
Allowance for equity funds used during construction	3,482	2,274	8,908	6,010
Allowance for borrowed funds used during construction	1,339	854	3,371	2,276
Income before income taxes	95,139	179,205	206,347	301,242
Income taxes	34,595	51,592	72,003	96,203
Net income	60,544	127,613	134,344	205,039
Preferred stock dividends of subsidiaries	471	471	1,417	1,417
Net income for common stock	60,073	127,142	132,927	203,622
Hawaiian Electric Company
Condensed Income Statements, Captions [Line Items]
Revenues	429,267	404,352	1,186,524	1,088,537
Expenses
Fuel oil	103,959	88,676	301,774	224,995
Purchased power	123,893	118,751	340,498	313,730
Other operation and maintenance	66,221	64,683	204,460	202,438
Depreciation	32,722	31,520	98,167	94,564
Taxes, other than income taxes	40,824	38,666	113,483	104,764
Total expenses	367,619	342,296	1,058,382	940,491
Total operating income	61,648	62,056	128,142	148,046
Allowance for equity funds used during construction	3,108	1,806	7,823	4,771
Equity in earnings of subsidiaries	12,767	14,729	29,306	33,541
Interest expense and other charges, net	(11,786)	(11,903)	(36,405)	(34,113)
Allowance for borrowed funds used during construction	1,173	669	2,910	1,785
Income before income taxes	66,910	67,357	131,776	154,030
Income taxes	19,153	20,113	36,370	45,022
Net income	47,757	47,244	95,406	109,008
Preferred stock dividends of subsidiaries	0	0	0	0
Net income attributable to Hawaiian Electric	47,757	47,244	95,406	109,008
Preferred stock dividends of Hawaiian Electric	270	270	810	810
Net income for common stock	47,487	46,974	94,596	108,198
HELCO
Condensed Income Statements, Captions [Line Items]
Revenues	84,334	83,105	245,026	229,940
Expenses
Fuel oil	15,754	14,603	47,486	40,725
Purchased power	21,332	22,728	63,403	58,885
Other operation and maintenance	16,593	15,017	49,667	46,574
Depreciation	9,685	9,449	29,056	28,347
Taxes, other than income taxes	7,928	7,836	23,080	21,632
Total expenses	71,292	69,633	212,692	196,163
Total operating income	13,042	13,472	32,334	33,777
Allowance for equity funds used during construction	167	238	416	571
Equity in earnings of subsidiaries	0	0	0	0
Interest expense and other charges, net	(2,899)	(2,972)	(8,899)	(8,606)
Allowance for borrowed funds used during construction	72	91	172	219
Income before income taxes	10,382	10,829	24,023	25,961
Income taxes	3,815	3,392	8,973	9,075
Net income	6,567	7,437	15,050	16,886
Preferred stock dividends of subsidiaries	133	133	400	400
Net income attributable to Hawaiian Electric	6,434	7,304	14,650	16,486
Preferred stock dividends of Hawaiian Electric	0	0	0	0
Net income for common stock	6,434	7,304	14,650	16,486
Maui Electric
Condensed Income Statements, Captions [Line Items]
Revenues	85,198	84,831	242,756	231,295
Expenses
Fuel oil	26,545	25,345	82,527	68,543
Purchased power	15,122	16,271	36,637	40,052
Other operation and maintenance	17,288	15,089	52,589	49,248
Depreciation	5,799	5,790	17,355	17,389
Taxes, other than income taxes	8,028	8,017	23,012	21,990
Total expenses	72,782	70,512	212,120	197,222
Total operating income	12,416	14,319	30,636	34,073
Allowance for equity funds used during construction	207	230	669	668
Equity in earnings of subsidiaries	0	0	0	0
Interest expense and other charges, net	(2,252)	(2,483)	(7,372)	(7,087)
Allowance for borrowed funds used during construction	94	94	289	272
Income before income taxes	10,465	12,160	24,222	27,926
Income taxes	4,037	4,640	9,280	10,585
Net income	6,428	7,520	14,942	17,341
Preferred stock dividends of subsidiaries	95	95	286	286
Net income attributable to Hawaiian Electric	6,333	7,425	14,656	17,055
Preferred stock dividends of Hawaiian Electric	0	0	0	0
Net income for common stock	6,333	7,425	14,656	17,055
Other subsidiaries
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Expenses
Fuel oil	0	0	0	0
Purchased power	0	0	0	0
Other operation and maintenance	0	0	0	0
Depreciation	0	0	0	0
Taxes, other than income taxes	0	0	0	0
Total expenses	0	0	0	0
Total operating income	0	0	0	0
Allowance for equity funds used during construction	0	0	0	0
Equity in earnings of subsidiaries	0	0	0	0
Interest expense and other charges, net	0	0	0	0
Allowance for borrowed funds used during construction	0	0	0	0
Income before income taxes	0	0	0	0
Income taxes	0	0	0	0
Net income	0	0	0	0
Preferred stock dividends of subsidiaries	0	0	0	0
Net income attributable to Hawaiian Electric	0	0	0	0
Preferred stock dividends of Hawaiian Electric	0	0	0	0
Net income for common stock	0	0	0	0
Consolidating adjustments
Condensed Income Statements, Captions [Line Items]
Revenues	(30)	(35)	(51)	(72)
Expenses
Fuel oil	0	0	0	0
Purchased power	0	0	0	0
Other operation and maintenance	0	0	0	0
Depreciation	0	0	0	0
Taxes, other than income taxes	0	0	0	0
Total expenses	0	0	0	0
Total operating income	(30)	(35)	(51)	(72)
Allowance for equity funds used during construction	0	0	0	0
Equity in earnings of subsidiaries	(12,767)	(14,729)	(29,306)	(33,541)
Interest expense and other charges, net	30	35	51	72
Allowance for borrowed funds used during construction	0	0	0	0
Income before income taxes	(12,767)	(14,729)	(29,306)	(33,541)
Income taxes	0	0	0	0
Net income	(12,767)	(14,729)	(29,306)	(33,541)
Preferred stock dividends of subsidiaries	0	0	0	0
Net income attributable to Hawaiian Electric	(12,767)	(14,729)	(29,306)	(33,541)
Preferred stock dividends of Hawaiian Electric	0	0	0	0
Net income for common stock	(12,767)	(14,729)	(29,306)	(33,541)
Hawaiian Electric Company, Inc. and Subsidiaries
Condensed Income Statements, Captions [Line Items]
Revenues	598,769	572,253	1,674,255	1,549,700
Expenses
Fuel oil	146,258	128,624	431,787	334,263
Purchased power	160,347	157,750	440,538	412,667
Other operation and maintenance	100,102	94,789	306,716	298,260
Depreciation	48,206	46,759	144,578	140,300
Taxes, other than income taxes	56,780	54,519	159,575	148,386
Total expenses	511,693	482,441	1,483,194	1,333,876
Total operating income	87,076	89,812	191,061	215,824
Allowance for equity funds used during construction	3,482	2,274	8,908	6,010
Equity in earnings of subsidiaries	0	0	0	0
Interest expense and other charges, net	(16,907)	(17,323)	(52,625)	(49,734)
Allowance for borrowed funds used during construction	1,339	854	3,371	2,276
Income before income taxes	74,990	75,617	150,715	174,376
Income taxes	27,005	28,145	54,623	64,682
Net income	47,985	47,472	96,092	109,694
Preferred stock dividends of subsidiaries	228	228	686	686
Net income attributable to Hawaiian Electric	47,757	47,244	95,406	109,008
Preferred stock dividends of Hawaiian Electric	270	270	810	810
Net income for common stock	$ 47,487	$ 46,974	$ 94,596	$ 108,198

Electric utility segment - Co38

Electric utility segment - Condensed consolidating statement of comprehensive income (loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Condensed Statement of Income Captions [Line Items]
Net income for common stock	$ 60,073	$ 127,142	$ 132,927	$ 203,622
Derivatives qualifying as cash flow hedges:
Effective portion of foreign currency hedge net unrealized gain, net of taxes	0	321	0	578
Reclassification adjustment to net income, net of tax benefits	0	(173)	454	(119)
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 of $___, $2,160, $___ and $4,221, respectively	3,942	3,641	11,793	10,877
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes	(3,596)	(3,311)	(10,790)	(9,934)
Other comprehensive income (loss), net of taxes	554	(1,669)	3,909	9,239
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	60,627	125,473	136,836	212,861
Hawaiian Electric Company
Condensed Statement of Income Captions [Line Items]
Net income for common stock	47,487	46,974	94,596	108,198
Derivatives qualifying as cash flow hedges:
Effective portion of foreign currency hedge net unrealized gain, net of taxes		321		578
Reclassification adjustment to net income, net of tax benefits		(173)	454	(173)
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 of $___, $2,160, $___ and $4,221, respectively	3,618	3,314	10,857	9,941
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes	(3,596)	(3,311)	(10,790)	(9,934)
Other comprehensive income (loss), net of taxes	22	151	521	412
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	47,509	47,125	95,117	108,610
HELCO
Condensed Statement of Income Captions [Line Items]
Net income for common stock	6,434	7,304	14,650	16,486
Derivatives qualifying as cash flow hedges:
Effective portion of foreign currency hedge net unrealized gain, net of taxes		0		0
Reclassification adjustment to net income, net of tax benefits		0	0	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 of $___, $2,160, $___ and $4,221, respectively	476	429	1,428	1,288
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes	(476)	(429)	(1,427)	(1,289)
Other comprehensive income (loss), net of taxes	0	0	1	(1)
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	6,434	7,304	14,651	16,485
Maui Electric
Condensed Statement of Income Captions [Line Items]
Net income for common stock	6,333	7,425	14,656	17,055
Derivatives qualifying as cash flow hedges:
Effective portion of foreign currency hedge net unrealized gain, net of taxes		0		0
Reclassification adjustment to net income, net of tax benefits		0	0	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 of $___, $2,160, $___ and $4,221, respectively	404	387	1,214	1,162
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes	(404)	(389)	(1,214)	(1,166)
Other comprehensive income (loss), net of taxes	0	(2)	0	(4)
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	6,333	7,423	14,656	17,051
Other subsidiaries
Condensed Statement of Income Captions [Line Items]
Net income for common stock	0	0	0	0
Derivatives qualifying as cash flow hedges:
Effective portion of foreign currency hedge net unrealized gain, net of taxes		0		0
Reclassification adjustment to net income, net of tax benefits		0	0	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 of $___, $2,160, $___ and $4,221, respectively	0	0	0	0
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes	0	0	0	0
Other comprehensive income (loss), net of taxes	0	0	0	0
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	0	0	0	0
Consolidating adjustments
Condensed Statement of Income Captions [Line Items]
Net income for common stock	(12,767)	(14,729)	(29,306)	(33,541)
Derivatives qualifying as cash flow hedges:
Effective portion of foreign currency hedge net unrealized gain, net of taxes		0		0
Reclassification adjustment to net income, net of tax benefits		0	0	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 of $___, $2,160, $___ and $4,221, respectively	(880)	(816)	(2,642)	(2,450)
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes	880	818	2,641	2,455
Other comprehensive income (loss), net of taxes	0	2	(1)	5
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	(12,767)	(14,727)	(29,307)	(33,536)
Hawaiian Electric Company, Inc. and Subsidiaries
Condensed Statement of Income Captions [Line Items]
Net income for common stock	47,487	46,974	94,596	108,198
Derivatives qualifying as cash flow hedges:
Effective portion of foreign currency hedge net unrealized gain, net of taxes	0	321	0	578
Reclassification adjustment to net income, net of tax benefits	0	(173)	454	(173)
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 of $___, $2,160, $___ and $4,221, respectively	3,618	3,314	10,857	9,941
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes	(3,596)	(3,311)	(10,790)	(9,934)
Other comprehensive income (loss), net of taxes	22	151	521	412
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	$ 47,509	$ 47,125	$ 95,117	$ 108,610

Electric utility segment - Co39

Electric utility segment - Condensed consolidating balance sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Utility property, plant and equipment
Total property, plant and equipment, net	$ 4,813,875	$ 4,603,465
Current assets
Cash and cash equivalents	202,173	278,452	$ 284,355	$ 300,478
Other long-term assets
Total assets	12,742,850	12,425,506
Capitalization
Common stock equity	2,103,022	2,066,753	2,068,388	1,927,640
Cumulative preferred stock—not subject to mandatory redemption	0	0
Current liabilities
Interest and preferred dividends payable	26,484	25,225
Deferred credits and other liabilities
Deferred income taxes	756,814	728,806
Contributions in aid of construction	565,118	543,525
Total liabilities and shareholders’ equity	12,742,850	12,425,506
Hawaiian Electric Company
Utility property, plant and equipment
Land	44,706	43,956
Plant and equipment	4,368,428	4,241,060
Less accumulated depreciation	(1,441,963)	(1,382,972)
Construction in progress	262,098	180,194
Utility property, plant and equipment, net	3,233,269	3,082,238
Nonutility property, plant and equipment, less accumulated depreciation	5,762	5,760
Total property, plant and equipment, net	3,239,031	3,087,998
Investment in wholly owned subsidiaries, at equity	559,671	550,946
Current assets
Cash and cash equivalents	3,454	61,388	9,821	16,281
Advances to affiliates	0	0
Customer accounts receivable, net	92,961	86,373
Accrued unbilled revenues, net	80,644	65,821
Other accounts receivable, net	7,402	7,652
Fuel oil stock, at average cost	40,460	47,239
Materials and supplies, at average cost	28,865	29,928
Prepayments and other	22,197	16,502
Regulatory assets	63,608	60,185
Total current assets	339,591	375,088
Other long-term assets
Regulatory assets	639,689	662,232
Unamortized debt expense	472	151
Other	50,424	43,743
Total other long-term assets	690,585	706,126
Total assets	4,828,878	4,720,158
Capitalization
Common stock equity	1,829,075	1,799,787	1,766,727	1,728,325
Cumulative preferred stock—not subject to mandatory redemption	22,293	22,293
Long-term debt, net	915,097	915,437
Total capitalization	2,766,465	2,737,517
Current liabilities
Short-term borrowings from non-affiliates	6,000
Short-term borrowings from affiliate	10,600	13,500
Accounts payable	94,618	86,369
Interest and preferred dividends payable	17,870	15,761
Taxes accrued	134,935	120,176
Regulatory liabilities	576	0
Other	45,662	41,352
Total current liabilities	310,261	277,158
Deferred credits and other liabilities
Deferred income taxes	540,857	524,433
Regulatory liabilities	328,530	281,112
Unamortized tax credits	57,577	57,844
Defined benefit pension and other postretirement benefit plans liability	431,191	444,458
Other	27,097	49,191
Total deferred credits and other liabilities	1,385,252	1,357,038
Contributions in aid of construction	366,900	348,445
Total liabilities and shareholders’ equity	4,828,878	4,720,158
HELCO
Utility property, plant and equipment
Land	6,191	6,181
Plant and equipment	1,278,884	1,255,185
Less accumulated depreciation	(524,759)	(507,666)
Construction in progress	16,459	12,510
Utility property, plant and equipment, net	776,775	766,210
Nonutility property, plant and equipment, less accumulated depreciation	115	115
Total property, plant and equipment, net	776,890	766,325
Investment in wholly owned subsidiaries, at equity	0	0
Current assets
Cash and cash equivalents	4,714	10,749	7,008	2,682
Advances to affiliates	6,600	3,500
Customer accounts receivable, net	20,830	20,055
Accrued unbilled revenues, net	15,145	13,564
Other accounts receivable, net	2,797	2,445
Fuel oil stock, at average cost	8,034	8,229
Materials and supplies, at average cost	8,960	7,380
Prepayments and other	4,183	5,352
Regulatory assets	4,341	3,483
Total current assets	75,604	74,757
Other long-term assets
Regulatory assets	118,655	120,863
Unamortized debt expense	83	23
Other	14,981	13,573
Total other long-term assets	133,719	134,459
Total assets	986,213	975,541
Capitalization
Common stock equity	294,319	291,291	299,276	292,702
Cumulative preferred stock—not subject to mandatory redemption	7,000	7,000
Long-term debt, net	213,658	213,703
Total capitalization	514,977	511,994
Current liabilities
Short-term borrowings from non-affiliates	0
Short-term borrowings from affiliate	0	0
Accounts payable	15,291	18,126
Interest and preferred dividends payable	3,973	4,206
Taxes accrued	27,571	28,100
Regulatory liabilities	1,029	2,219
Other	8,173	7,637
Total current liabilities	56,037	60,288
Deferred credits and other liabilities
Deferred income taxes	113,277	108,052
Regulatory liabilities	100,973	93,974
Unamortized tax credits	16,048	15,994
Defined benefit pension and other postretirement benefit plans liability	72,366	75,005
Other	14,383	13,024
Total deferred credits and other liabilities	317,047	306,049
Contributions in aid of construction	98,152	97,210
Total liabilities and shareholders’ equity	986,213	975,541
Maui Electric
Utility property, plant and equipment
Land	3,016	3,016
Plant and equipment	1,130,942	1,109,487
Less accumulated depreciation	(493,707)	(478,644)
Construction in progress	28,935	19,038
Utility property, plant and equipment, net	669,186	652,897
Nonutility property, plant and equipment, less accumulated depreciation	1,532	1,532
Total property, plant and equipment, net	670,718	654,429
Investment in wholly owned subsidiaries, at equity	0	0
Current assets
Cash and cash equivalents	1,718	2,048	6,047	5,385
Advances to affiliates	4,000	10,000
Customer accounts receivable, net	19,344	17,260
Accrued unbilled revenues, net	13,918	12,308
Other accounts receivable, net	1,244	1,416
Fuel oil stock, at average cost	11,759	10,962
Materials and supplies, at average cost	18,134	16,371
Prepayments and other	3,647	2,179
Regulatory assets	4,824	2,364
Total current assets	78,588	74,908
Other long-term assets
Regulatory assets	105,847	108,324
Unamortized debt expense	106	34
Other	14,823	13,592
Total other long-term assets	120,776	121,950
Total assets	870,082	851,287
Capitalization
Common stock equity	265,251	259,554	270,981	263,725
Cumulative preferred stock—not subject to mandatory redemption	5,000	5,000
Long-term debt, net	189,868	190,120
Total capitalization	460,119	454,674
Current liabilities
Short-term borrowings from non-affiliates	0
Short-term borrowings from affiliate	0	0
Accounts payable	14,331	13,319
Interest and preferred dividends payable	3,429	2,882
Taxes accrued	25,919	25,387
Regulatory liabilities	1,794	1,543
Other	13,111	12,501
Total current liabilities	58,584	55,632
Deferred credits and other liabilities
Deferred income taxes	108,573	100,911
Regulatory liabilities	33,314	31,845
Unamortized tax credits	15,202	15,123
Defined benefit pension and other postretirement benefit plans liability	78,156	80,263
Other	16,068	14,969
Total deferred credits and other liabilities	251,313	243,111
Contributions in aid of construction	100,066	97,870
Total liabilities and shareholders’ equity	870,082	851,287
Other subsidiaries
Utility property, plant and equipment
Land	0	0
Plant and equipment	0	0
Less accumulated depreciation	0	0
Construction in progress	0	0
Utility property, plant and equipment, net	0	0
Nonutility property, plant and equipment, less accumulated depreciation	0	0
Total property, plant and equipment, net	0	0
Investment in wholly owned subsidiaries, at equity	0	0
Current assets
Cash and cash equivalents	101	101	101	101
Advances to affiliates	0	0
Customer accounts receivable, net	0	0
Accrued unbilled revenues, net	0	0
Other accounts receivable, net	0	0
Fuel oil stock, at average cost	0	0
Materials and supplies, at average cost	0	0
Prepayments and other	0	0
Regulatory assets	0	0
Total current assets	101	101
Other long-term assets
Regulatory assets	0	0
Unamortized debt expense	0	0
Other	0	0
Total other long-term assets	0	0
Total assets	101	101
Capitalization
Common stock equity	101	101	101	101
Cumulative preferred stock—not subject to mandatory redemption	0	0
Long-term debt, net	0	0
Total capitalization	101	101
Current liabilities
Short-term borrowings from non-affiliates	0
Short-term borrowings from affiliate	0	0
Accounts payable	0	0
Interest and preferred dividends payable	0	0
Taxes accrued	0	0
Regulatory liabilities	0	0
Other	0	0
Total current liabilities	0	0
Deferred credits and other liabilities
Deferred income taxes	0	0
Regulatory liabilities	0	0
Unamortized tax credits	0	0
Defined benefit pension and other postretirement benefit plans liability	0	0
Other	0	0
Total deferred credits and other liabilities	0	0
Contributions in aid of construction	0	0
Total liabilities and shareholders’ equity	101	101
Consolidating adjustments
Utility property, plant and equipment
Land	0	0
Plant and equipment	0	0
Less accumulated depreciation	0	0
Construction in progress	0	0
Utility property, plant and equipment, net	0	0
Nonutility property, plant and equipment, less accumulated depreciation	0	0
Total property, plant and equipment, net	0	0
Investment in wholly owned subsidiaries, at equity	(559,671)	(550,946)
Current assets
Cash and cash equivalents	0	0	0	0
Advances to affiliates	(10,600)	(13,500)
Customer accounts receivable, net	0	0
Accrued unbilled revenues, net	0	0
Other accounts receivable, net	(7,346)	(6,280)
Fuel oil stock, at average cost	0	0
Materials and supplies, at average cost	0	0
Prepayments and other	(156)	(933)
Regulatory assets	0	0
Total current assets	(18,102)	(20,713)
Other long-term assets
Regulatory assets	0	0
Unamortized debt expense	0	0
Other	0	0
Total other long-term assets	0	0
Total assets	(577,773)	(571,659)
Capitalization
Common stock equity	(559,671)	(550,946)	(570,358)	(556,528)
Cumulative preferred stock—not subject to mandatory redemption	0	0
Long-term debt, net	0	0
Total capitalization	(559,671)	(550,946)
Current liabilities
Short-term borrowings from non-affiliates	0
Short-term borrowings from affiliate	(10,600)	(13,500)
Accounts payable	0	0
Interest and preferred dividends payable	(11)	(11)
Taxes accrued	(5,060)	(933)
Regulatory liabilities	0	0
Other	(7,335)	(6,269)
Total current liabilities	(23,006)	(20,713)
Deferred credits and other liabilities
Deferred income taxes	4,904	263
Regulatory liabilities	0	0
Unamortized tax credits	0	0
Defined benefit pension and other postretirement benefit plans liability	0	0
Other	0	(263)
Total deferred credits and other liabilities	4,904	0
Contributions in aid of construction	0	0
Total liabilities and shareholders’ equity	(577,773)	(571,659)
Hawaiian Electric Company, Inc. and Subsidiaries
Utility property, plant and equipment
Land	53,913	53,153
Plant and equipment	6,778,254	6,605,732
Less accumulated depreciation	(2,460,429)	(2,369,282)
Construction in progress	307,492	211,742
Utility property, plant and equipment, net	4,679,230	4,501,345
Nonutility property, plant and equipment, less accumulated depreciation	7,409	7,407
Total property, plant and equipment, net	4,686,639	4,508,752
Investment in wholly owned subsidiaries, at equity	0	0
Current assets
Cash and cash equivalents	9,987	74,286	22,977	24,449
Advances to affiliates	0	0
Customer accounts receivable, net	133,135	123,688
Accrued unbilled revenues, net	109,707	91,693
Other accounts receivable, net	4,097	5,233
Fuel oil stock, at average cost	60,253	66,430
Materials and supplies, at average cost	55,959	53,679
Prepayments and other	29,871	23,100
Regulatory assets	72,773	66,032
Total current assets	475,782	504,141
Other long-term assets
Regulatory assets	864,191	891,419
Unamortized debt expense	661	208
Other	80,228	70,908
Total other long-term assets	945,080	962,535
Total assets	6,107,501	5,975,428
Capitalization
Common stock equity	1,829,075	1,799,787	$ 1,766,727	$ 1,728,325
Cumulative preferred stock—not subject to mandatory redemption	34,293	34,293
Long-term debt, net	1,318,623	1,319,260
Total capitalization	3,181,991	3,153,340
Current liabilities
Short-term borrowings from non-affiliates	6,000	0
Short-term borrowings from affiliate	0	0
Accounts payable	124,240	117,814
Interest and preferred dividends payable	25,261	22,838
Taxes accrued	183,365	172,730
Regulatory liabilities	3,399	3,762
Other	59,611	55,221
Total current liabilities	401,876	372,365
Deferred credits and other liabilities
Deferred income taxes	767,611	733,659
Regulatory liabilities	462,817	406,931
Unamortized tax credits	88,827	88,961
Defined benefit pension and other postretirement benefit plans liability	581,713	599,726
Other	57,548	76,921
Total deferred credits and other liabilities	1,958,516	1,906,198
Contributions in aid of construction	565,118	543,525
Total liabilities and shareholders’ equity	$ 6,107,501	$ 5,975,428

Electric utility segment - Co40

Electric utility segment - Condensed consolidating statement of changes in common stock equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Increase (decrease) in stockholders' equity
Beginning Balance			$ 2,066,753	$ 1,927,640
Net income for common stock	$ 60,073	$ 127,142	132,927	203,622
Other comprehensive income (loss), net of taxes	554	(1,669)	3,909	9,239
Common stock dividends			(101,149)	(100,398)
Ending Balance	2,103,022	2,068,388	2,103,022	2,068,388
Hawaiian Electric Company
Increase (decrease) in stockholders' equity
Beginning Balance			1,799,787	1,728,325
Net income for common stock	47,487	46,974	94,596	108,198
Other comprehensive income (loss), net of taxes	22	151	521	412
Common stock dividends			(65,825)	(70,199)
Common stock issuance expenses			(4)	(9)
Ending Balance	1,829,075	1,766,727	1,829,075	1,766,727
HELCO
Increase (decrease) in stockholders' equity
Beginning Balance			291,291	292,702
Net income for common stock	6,434	7,304	14,650	16,486
Other comprehensive income (loss), net of taxes	0	0	1	(1)
Common stock dividends			(11,622)	(9,906)
Common stock issuance expenses			(1)	(5)
Ending Balance	294,319	299,276	294,319	299,276
Maui Electric
Increase (decrease) in stockholders' equity
Beginning Balance			259,554	263,725
Net income for common stock	6,333	7,425	14,656	17,055
Other comprehensive income (loss), net of taxes	0	(2)	0	(4)
Common stock dividends			(8,959)	(9,795)
Common stock issuance expenses			0	0
Ending Balance	265,251	270,981	265,251	270,981
Other subsidiaries
Increase (decrease) in stockholders' equity
Beginning Balance			101	101
Net income for common stock	0	0	0	0
Other comprehensive income (loss), net of taxes	0	0	0	0
Common stock dividends			0	0
Common stock issuance expenses			0	0
Ending Balance	101	101	101	101
Consolidating adjustments
Increase (decrease) in stockholders' equity
Beginning Balance			(550,946)	(556,528)
Net income for common stock	(12,767)	(14,729)	(29,306)	(33,541)
Other comprehensive income (loss), net of taxes	0	2	(1)	5
Common stock dividends			20,581	19,701
Common stock issuance expenses			1	5
Ending Balance	(559,671)	(570,358)	(559,671)	(570,358)
Hawaiian Electric Company, Inc. and Subsidiaries
Increase (decrease) in stockholders' equity
Beginning Balance			1,799,787	1,728,325
Net income for common stock	47,487	46,974	94,596	108,198
Other comprehensive income (loss), net of taxes	22	151	521	412
Common stock dividends			(65,825)	(70,199)
Common stock issuance expenses			(4)	(9)
Ending Balance	$ 1,829,075	$ 1,766,727	$ 1,829,075	$ 1,766,727

Electric utility segment - Co41

Electric utility segment - Condensed consolidating statement of cash flows (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities
Net income	$ 60,544	$ 127,613	$ 134,344	$ 205,039
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment			150,123	145,684
Other amortization			15,362	7,368
Deferred income taxes			21,397	30,667
Allowance for equity funds used during construction	(3,482)	(2,274)	(8,908)	(6,010)
Other			(1,350)	3,234
Changes in assets and liabilities
Decrease (increase) in fuel oil stock			6,177	6,736
Decrease (increase) in regulatory assets			3,922	(2,251)
Change in prepaid and accrued income taxes, tax credits and revenue taxes			2,828	52,558
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability			670	150
Change in other assets and liabilities			(22,311)	(39,850)
Net cash provided by operating activities			291,143	409,300
Cash flows from investing activities
Capital expenditures			(314,404)	(259,207)
Contributions in aid of construction			40,603	23,568
Other			1,345	112
Net cash used in investing activities			(440,359)	(535,744)
Cash flows from financing activities
Common stock dividends			(101,149)	(83,620)
Proceeds from issuance of long-term debt			265,000	75,000
Repayment of long-term debt and funds transferred for redemption of special purpose revenue bonds			(265,000)	(75,000)
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less			24,498	(103,063)
Other			(9,531)	(2,361)
Net cash provided by financing activities			72,937	110,321
Net decrease in cash and cash equivalents			(76,279)	(16,123)
Cash and cash equivalents, beginning of period			278,452	300,478
Cash and cash equivalents, end of period	202,173	284,355	202,173	284,355
Hawaiian Electric Company
Cash flows from operating activities
Net income	47,757	47,244	95,406	109,008
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in earnings of subsidiaries			(29,381)	(33,616)
Common stock dividends received from subsidiaries			20,656	19,776
Depreciation of property, plant and equipment			98,167	94,564
Other amortization			2,168	2,462
Deferred income taxes			12,166	41,005
Allowance for equity funds used during construction	(3,108)	(1,806)	(7,823)	(4,771)
Other			216	2,925
Changes in assets and liabilities
Increase in accounts receivable			(6,114)	328
Increase in accrued unbilled revenues			(14,823)	(9,673)
Decrease (increase) in fuel oil stock			6,779	4,157
Decrease (increase) in materials and supplies			1,063	(1,755)
Decrease (increase) in regulatory assets			9,471	(2,474)
Increase (decrease) in accounts payable			(22,224)	(2,628)
Change in prepaid and accrued income taxes, tax credits and revenue taxes			10,920	(7,324)
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability			532	449
Change in other assets and liabilities			(2,709)	(10,548)
Net cash provided by operating activities			174,470	201,885
Cash flows from investing activities
Capital expenditures			(207,493)	(188,415)
Contributions in aid of construction			34,787	18,181
Other			6,089	901
Advances from affiliates			0	0
Net cash used in investing activities			(166,617)	(169,333)
Cash flows from financing activities
Common stock dividends			(65,825)	(70,199)
Preferred stock dividends of Hawaiian Electric and subsidiaries			(810)	(810)
Proceeds from issuance of long-term debt			162,000
Repayment of long-term debt and funds transferred for redemption of special purpose revenue bonds			(162,000)
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less			3,100	32,000
Other			(2,252)	(3)
Net cash provided by financing activities			(65,787)	(39,012)
Net decrease in cash and cash equivalents			(57,934)	(6,460)
Cash and cash equivalents, beginning of period			61,388	16,281
Cash and cash equivalents, end of period	3,454	9,821	3,454	9,821
HELCO
Cash flows from operating activities
Net income	6,567	7,437	15,050	16,886
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in earnings of subsidiaries			0	0
Common stock dividends received from subsidiaries			0	0
Depreciation of property, plant and equipment			29,056	28,347
Other amortization			1,718	1,366
Deferred income taxes			5,237	4,529
Allowance for equity funds used during construction	(167)	(238)	(416)	(571)
Other			566	162
Changes in assets and liabilities
Increase in accounts receivable			(1,127)	(2,716)
Increase in accrued unbilled revenues			(1,581)	(373)
Decrease (increase) in fuel oil stock			195	1,425
Decrease (increase) in materials and supplies			(1,580)	(1,559)
Decrease (increase) in regulatory assets			(2,935)	(150)
Increase (decrease) in accounts payable			(2,955)	143
Change in prepaid and accrued income taxes, tax credits and revenue taxes			(758)	2,230
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability			39	40
Change in other assets and liabilities			1,059	2,856
Net cash provided by operating activities			41,568	52,615
Cash flows from investing activities
Capital expenditures			(36,405)	(37,835)
Contributions in aid of construction			3,460	2,691
Other			871	169
Advances from affiliates			(3,100)	(3,000)
Net cash used in investing activities			(35,174)	(37,975)
Cash flows from financing activities
Common stock dividends			(11,622)	(9,906)
Preferred stock dividends of Hawaiian Electric and subsidiaries			(400)	(400)
Proceeds from issuance of long-term debt			28,000
Repayment of long-term debt and funds transferred for redemption of special purpose revenue bonds			(28,000)
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less			0	0
Other			(407)	(8)
Net cash provided by financing activities			(12,429)	(10,314)
Net decrease in cash and cash equivalents			(6,035)	4,326
Cash and cash equivalents, beginning of period			10,749	2,682
Cash and cash equivalents, end of period	4,714	7,008	4,714	7,008
Maui Electric
Cash flows from operating activities
Net income	6,428	7,520	14,942	17,341
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in earnings of subsidiaries			0	0
Common stock dividends received from subsidiaries			0	0
Depreciation of property, plant and equipment			17,355	17,389
Other amortization			2,232	1,552
Deferred income taxes			7,493	10,085
Allowance for equity funds used during construction	(207)	(230)	(669)	(668)
Other			(256)	147
Changes in assets and liabilities
Increase in accounts receivable			(1,912)	(1,313)
Increase in accrued unbilled revenues			(1,610)	(612)
Decrease (increase) in fuel oil stock			(797)	1,154
Decrease (increase) in materials and supplies			(1,763)	387
Decrease (increase) in regulatory assets			(2,614)	373
Increase (decrease) in accounts payable			2,338	1,809
Change in prepaid and accrued income taxes, tax credits and revenue taxes			210	(4,472)
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability			(118)	(129)
Change in other assets and liabilities			54	(2,571)
Net cash provided by operating activities			34,885	40,472
Cash flows from investing activities
Capital expenditures			(34,106)	(24,454)
Contributions in aid of construction			2,356	2,696
Other			714	30
Advances from affiliates			6,000	(8,000)
Net cash used in investing activities			(25,036)	(29,728)
Cash flows from financing activities
Common stock dividends			(8,959)	(9,795)
Preferred stock dividends of Hawaiian Electric and subsidiaries			(286)	(286)
Proceeds from issuance of long-term debt			75,000
Repayment of long-term debt and funds transferred for redemption of special purpose revenue bonds			(75,000)
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less			0	0
Other			(934)	(1)
Net cash provided by financing activities			(10,179)	(10,082)
Net decrease in cash and cash equivalents			(330)	662
Cash and cash equivalents, beginning of period			2,048	5,385
Cash and cash equivalents, end of period	1,718	6,047	1,718	6,047
Other subsidiaries
Cash flows from operating activities
Net income	0	0	0	0
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in earnings of subsidiaries			0	0
Common stock dividends received from subsidiaries			0	0
Depreciation of property, plant and equipment			0	0
Other amortization			0	0
Deferred income taxes			0	0
Allowance for equity funds used during construction	0	0	0	0
Other			0	0
Changes in assets and liabilities
Increase in accounts receivable			0	0
Increase in accrued unbilled revenues			0	0
Decrease (increase) in fuel oil stock			0	0
Decrease (increase) in materials and supplies			0	0
Decrease (increase) in regulatory assets			0	0
Increase (decrease) in accounts payable			0	0
Change in prepaid and accrued income taxes, tax credits and revenue taxes			0	0
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability			0	0
Change in other assets and liabilities			0	0
Net cash provided by operating activities			0	0
Cash flows from investing activities
Capital expenditures			0	0
Contributions in aid of construction			0	0
Other			0	0
Advances from affiliates			0	0
Net cash used in investing activities			0	0
Cash flows from financing activities
Common stock dividends			0	0
Preferred stock dividends of Hawaiian Electric and subsidiaries			0	0
Proceeds from issuance of long-term debt			0
Repayment of long-term debt and funds transferred for redemption of special purpose revenue bonds			0
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less			0	0
Other			0	0
Net cash provided by financing activities			0	0
Net decrease in cash and cash equivalents			0	0
Cash and cash equivalents, beginning of period			101	101
Cash and cash equivalents, end of period	101	101	101	101
Consolidating adjustments
Cash flows from operating activities
Net income	(12,767)	(14,729)	(29,306)	(33,541)
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in earnings of subsidiaries			29,306	33,541
Common stock dividends received from subsidiaries			(20,581)	(19,701)
Depreciation of property, plant and equipment			0	0
Other amortization			0	0
Deferred income taxes			4,641	29
Allowance for equity funds used during construction	0	0	0	0
Other			0	0
Changes in assets and liabilities
Increase in accounts receivable			1,066	3,046
Increase in accrued unbilled revenues			0	0
Decrease (increase) in fuel oil stock			0	0
Decrease (increase) in materials and supplies			0	0
Decrease (increase) in regulatory assets			0	0
Increase (decrease) in accounts payable			0	0
Change in prepaid and accrued income taxes, tax credits and revenue taxes			(5,081)	(29)
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability			0	0
Change in other assets and liabilities			(1,066)	(3,046)
Net cash provided by operating activities			(21,021)	(19,701)
Cash flows from investing activities
Capital expenditures			0	0
Contributions in aid of construction			0	0
Other			440	0
Advances from affiliates			(2,900)	11,000
Net cash used in investing activities			(2,460)	11,000
Cash flows from financing activities
Common stock dividends			20,581	19,701
Preferred stock dividends of Hawaiian Electric and subsidiaries			0	0
Proceeds from issuance of long-term debt
Repayment of long-term debt and funds transferred for redemption of special purpose revenue bonds			0
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less			2,900	(11,000)
Other			0	0
Net cash provided by financing activities			23,481	8,701
Net decrease in cash and cash equivalents			0	0
Cash and cash equivalents, beginning of period			0	0
Cash and cash equivalents, end of period	0	0	0	0
Hawaiian Electric Company, Inc. and Subsidiaries
Cash flows from operating activities
Net income	47,985	47,472	96,092	109,694
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in earnings of subsidiaries			(75)	(75)
Common stock dividends received from subsidiaries			75	75
Depreciation of property, plant and equipment			144,578	140,300
Other amortization			6,118	5,380
Deferred income taxes			29,537	55,648
Allowance for equity funds used during construction	(3,482)	(2,274)	(8,908)	(6,010)
Other			526	3,234
Changes in assets and liabilities
Increase in accounts receivable			(8,087)	(655)
Increase in accrued unbilled revenues			(18,014)	(10,658)
Decrease (increase) in fuel oil stock			6,177	6,736
Decrease (increase) in materials and supplies			(2,280)	(2,927)
Decrease (increase) in regulatory assets			3,922	(2,251)
Increase (decrease) in accounts payable			(22,841)	(676)
Change in prepaid and accrued income taxes, tax credits and revenue taxes			5,291	(9,595)
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability			453	360
Change in other assets and liabilities			(2,662)	(13,309)
Net cash provided by operating activities			229,902	275,271
Cash flows from investing activities
Capital expenditures			(278,004)	(250,704)
Contributions in aid of construction			40,603	23,568
Other			8,114	1,100
Advances from affiliates			0	0
Net cash used in investing activities			(229,287)	(226,036)
Cash flows from financing activities
Common stock dividends			(65,825)	(70,199)
Preferred stock dividends of Hawaiian Electric and subsidiaries			(1,496)	(1,496)
Proceeds from issuance of long-term debt			265,000	0
Repayment of long-term debt and funds transferred for redemption of special purpose revenue bonds			(265,000)	0
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less			6,000	21,000
Other			(3,593)	(12)
Net cash provided by financing activities			(64,914)	(50,707)
Net decrease in cash and cash equivalents			(64,299)	(1,472)
Cash and cash equivalents, beginning of period			74,286	24,449
Cash and cash equivalents, end of period	$ 9,987	$ 22,977	$ 9,987	$ 22,977

Bank segment - Income statemen

Bank segment - Income statement data (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Noninterest expense
Income before income taxes	$ 95,139	$ 179,205	$ 206,347	$ 301,242
Income taxes	34,595	51,592	72,003	96,203
Net income	60,544	127,613	134,344	205,039
American Savings Bank (ASB)
Interest and dividend income
Interest and fees on loans	52,210	50,444	155,269	148,571
Interest and dividends on investment securities	6,850	4,759	20,593	14,219
Total interest and dividend income	59,060	55,203	175,862	162,790
Interest expense
Interest on deposit liabilities	2,444	1,871	6,858	5,154
Interest on other borrowings	470	1,464	2,110	4,416
Total interest expense	2,914	3,335	8,968	9,570
Net interest income	56,146	51,868	166,894	153,220
Provision for loan losses	490	5,747	7,231	15,266
Net interest income after provision for loan losses	55,656	46,121	159,663	137,954
Noninterest income
Fees from other financial services	5,635	5,599	17,055	16,799
Fee income on deposit liabilities	5,533	5,627	16,526	16,045
Fee income on other financial products	1,904	2,151	5,741	6,563
Bank-owned life insurance	1,257	1,616	4,165	3,620
Mortgage banking income	520	2,347	1,896	5,096
Gains on sale of investment securities, net	0	0	0	598
Other income, net	380	1,165	1,229	1,786
Total noninterest income	15,229	18,505	46,612	50,507
Noninterest expense
Compensation and employee benefits	23,724	22,844	71,703	67,197
Occupancy	4,284	3,991	12,623	12,244
Data processing	3,262	3,150	9,749	9,599
Services	2,863	2,427	7,989	8,093
Equipment	1,814	1,759	5,333	5,193
Office supplies, printing and postage	1,444	1,483	4,506	4,431
Marketing	934	747	2,290	2,507
FDIC insurance	746	907	2,296	2,704
Other expense	5,050	4,591	14,066	13,948
Total noninterest expense	44,121	41,899	130,555	125,916
Income before income taxes	26,764	22,727	75,720	62,545
Income taxes	9,172	7,623	25,582	21,483
Net income	$ 17,592	$ 15,104	$ 50,138	$ 41,062

Bank segment - Comprehensive i

Bank segment - Comprehensive income data (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Condensed Statement of Income Captions [Line Items]
Net income for common stock	$ 60,073	$ 127,142	$ 132,927	$ 203,622
Net unrealized gains (losses) on securities:
Net unrealized gains (losses) on available-for-sale investment securities arising during the period, net of (taxes) benefits of $(137), $1,417, $(1,619) and $(5,413), respectively	208	(2,147)	2,452	8,197
Reclassification adjustment for net realized gains included in net income, net of taxes	0	0	0	(360)
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 of $138, $144, $675 and $421, respectively	3,942	3,641	11,793	10,877
Other comprehensive income (loss), net of taxes	554	(1,669)	3,909	9,239
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	60,627	125,473	136,836	212,861
Net unrealized gains (losses) on securities arising during the period, taxes (benefits)	137	(1,417)	1,619	5,413
Reclassification adjustment for sale of securities, tax (benefits)	0	0	0	238
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, tax benefits	(2,516)	(2,324)	(7,526)	(6,943)
American Savings Bank (ASB)
Condensed Statement of Income Captions [Line Items]
Net income for common stock	17,592	15,104	50,138	41,062
Net unrealized gains (losses) on securities:
Net unrealized gains (losses) on available-for-sale investment securities arising during the period, net of (taxes) benefits of $(137), $1,417, $(1,619) and $(5,413), respectively	208	(2,147)	2,452	8,197
Reclassification adjustment for net realized gains included in net income, net of taxes	0	0	0	(360)
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 of $138, $144, $675 and $421, respectively	209	219	1,023	638
Other comprehensive income (loss), net of taxes	417	(1,928)	3,475	8,475
Comprehensive income attributable to Hawaiian Electric Industries, Inc.	18,009	13,176	53,613	49,537
Net unrealized gains (losses) on securities arising during the period, taxes (benefits)	137	(1,417)	1,619	5,413
Reclassification adjustment for sale of securities, tax (benefits)	0	0	0	238
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, tax benefits	$ (138)	$ (144)	$ (675)	$ (421)

Bank segment - Balance sheet d

Bank segment - Balance sheet data (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Assets
Available-for-sale investment securities, at fair value	$ 1,320,110	$ 1,105,182
Stock in Federal Home Loan Bank, at cost	9,706	11,218
Allowance for loan losses	(53,047)	(55,533)
Net loans	4,623,234	4,683,160
Loans held for sale, at lower of cost or fair value	15,728	18,817
Other	474,444	447,621
Goodwill	82,190	82,190
Total assets	12,742,850	12,425,506
Liabilities
Other	460,396	473,512
Total liabilities	10,605,535	10,324,460
Commitments and contingencies
Retained earnings	470,750	438,972
Accumulated other comprehensive loss, net of tax benefits
Accumulated other comprehensive loss, net of tax benefits	(29,220)	(33,129)
Total shareholders’ equity	2,103,022	2,066,753	$ 2,068,388	$ 1,927,640
Total liabilities and shareholders’ equity	12,742,850	12,425,506
Other assets
Premises and equipment, net	4,813,875	4,603,465
Total Other Assets	474,444	447,621
Other liabilities
Total other liabilities	460,396	473,512
Balance Sheet related disclosures
Securities sold under agreements to repurchase	104,000	93,000
American Savings Bank (ASB)
Assets
Cash and due from banks	120,492	137,083
Interest-bearing deposits	69,223	52,128
Restricted cash	0	1,764
Available-for-sale investment securities, at fair value	1,320,110	1,105,182
Stock in Federal Home Loan Bank, at cost	9,706	11,218
Loans receivable held for investment	4,676,281	4,738,693
Allowance for loan losses	(53,047)	(55,533)
Net loans	4,623,234	4,683,160
Loans held for sale, at lower of cost or fair value	15,728	18,817
Other	378,224	329,815
Goodwill	82,190	82,190
Total assets	6,618,907	6,421,357
Liabilities
Deposit liabilities—noninterest-bearing	1,710,698	1,639,051
Deposit liabilities—interest-bearing	4,041,628	3,909,878
Other borrowings	153,552	192,618
Other	107,558	101,635
Total liabilities	6,013,436	5,843,182
Commitments and contingencies
Common stock	1	1
Additional paid in capital	344,512	342,704
Retained earnings	279,956	257,943
Accumulated other comprehensive loss, net of tax benefits
Net unrealized losses on securities	(5,479)	(7,931)
Retirement benefit plans	(13,519)	(14,542)
Accumulated other comprehensive loss, net of tax benefits	(18,998)	(22,473)
Total shareholders’ equity	605,471	578,175
Total liabilities and shareholders’ equity	6,618,907	6,421,357
Other assets
Bank-owned life insurance	147,391	143,197
Premises and equipment, net	123,326	90,570
Prepaid expenses	5,356	3,348
Accrued interest receivable	17,488	16,824
Mortgage-servicing rights	9,070	9,373
Low-income housing equity investments	54,515	47,081
Real estate acquired in settlement of loans, net	1,183	1,189
Other	19,895	18,233
Total Other Assets	378,224	329,815
Other liabilities
Accrued expenses	41,698	36,754
Federal and state income taxes payable	6,829	4,728
Cashier’s checks	27,448	24,156
Advance payments by borrowers	4,867	10,335
Other	26,716	25,662
Total other liabilities	107,558	101,635
Balance Sheet related disclosures
Securities sold under agreements to repurchase	104,000	93,000
Advances from Federal Home Loan Bank	$ 50,000	$ 100,000

Bank segment - Components of i

Bank segment - Components of investment securities (Details) $ in Thousands	Sep. 30, 2017USD ($)issue	Dec. 31, 2016USD ($)issue
Available-for-sale securities
Amortized cost	$ 1,329,207	$ 1,118,350
Gross unrealized gains	3,009	2,662
Gross unrealized losses	(12,106)	(15,830)
Available-for-sale investment securities	$ 1,320,110	$ 1,105,182
Available-for-sale Securities, Continuous Unrealized Loss Position
Available-for-sale, securities, less than 12 months, number of issues (in issues) | issue	99	106
Fair value, less than 12 months	$ 777,389	$ 833,130
Gross unrealized losses, less than 12 months	$ (8,773)	$ (14,153)
Available-for-sale, securities, greater than 12 months, number of issues (in issues) | issue	31	14
Fair value, 12 months or longer	$ 151,123	$ 50,970
Gross unrealized losses, 12 months or longer	(3,333)	(1,677)
U.S. Treasury and federal agency obligations
Available-for-sale securities
Amortized cost	182,535	193,515
Gross unrealized gains	882	920
Gross unrealized losses	(1,299)	(2,154)
Available-for-sale investment securities	$ 182,118	$ 192,281
Available-for-sale Securities, Continuous Unrealized Loss Position
Available-for-sale, securities, less than 12 months, number of issues (in issues) | issue	15	18
Fair value, less than 12 months	$ 91,203	$ 123,475
Gross unrealized losses, less than 12 months	$ (1,064)	$ (2,010)
Available-for-sale, securities, greater than 12 months, number of issues (in issues) | issue	2	1
Fair value, 12 months or longer	$ 13,072	$ 3,485
Gross unrealized losses, 12 months or longer	(235)	(144)
Mortgage-related securities- FNMA, FHLMC and GNMA
Available-for-sale securities
Amortized cost	1,131,245	909,408
Gross unrealized gains	2,127	1,742
Gross unrealized losses	(10,807)	(13,676)
Available-for-sale investment securities	$ 1,122,565	$ 897,474
Available-for-sale Securities, Continuous Unrealized Loss Position
Available-for-sale, securities, less than 12 months, number of issues (in issues) | issue	84	88
Fair value, less than 12 months	$ 686,186	$ 709,655
Gross unrealized losses, less than 12 months	$ (7,709)	$ (12,143)
Available-for-sale, securities, greater than 12 months, number of issues (in issues) | issue	29	13
Fair value, 12 months or longer	$ 138,051	$ 47,485
Gross unrealized losses, 12 months or longer	(3,098)	(1,533)
Mortgage revenue bond
Available-for-sale securities
Amortized cost	15,427	15,427
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Available-for-sale investment securities	$ 15,427	$ 15,427
Available-for-sale Securities, Continuous Unrealized Loss Position
Available-for-sale, securities, less than 12 months, number of issues (in issues) | issue	0	0
Fair value, less than 12 months	$ 0	$ 0
Gross unrealized losses, less than 12 months	$ 0	$ 0
Available-for-sale, securities, greater than 12 months, number of issues (in issues) | issue	0	0
Fair value, 12 months or longer	$ 0	$ 0
Gross unrealized losses, 12 months or longer	$ 0	$ 0

Bank segment - Contractual mat

Bank segment - Contractual maturities of securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Amortized cost
Due in one year or less	$ 9,998
Due after one year through five years	77,138
Due after five years through ten years	81,464
Due after ten years	29,362
Total amortized cost	197,962
Mortgage-related securities-FNMA, FHLMC and GNMA	1,131,245
Amortized cost	1,329,207	$ 1,118,350
Fair value
Due in one year or less	9,999
Due after one year through five years	77,331
Due after five years through ten years	81,170
Due after ten years	29,045
Total fair value	197,545
Mortgage-related securities-FNMA, FHLMC and GNMA	1,122,565
Available-for-sale securities	$ 1,320,110	$ 1,105,182

Bank segment - Available-for-s

Bank segment - Available-for-sale securities -narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Bank Subsidiary [Abstract]
Proceeds from sale of available-for-sale investment securities	$ 0	$ 0	$ 0	$ 16,423,000
Gross realized gains from the sale of available-for-sale investment securities	$ 0	$ 0	$ 0	$ 600,000

Bank segment - Loans receivabl

Bank segment - Loans receivable (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 4,678,144	$ 4,743,619
Less: Deferred fees and discounts	(1,863)	(4,926)
Allowance for loan losses	(53,047)	(55,533)
Net loans	$ 4,623,234	4,683,160
Minimum benchmark percentage of loan to appraisal ratio which mortgage insurance is required	80.00%
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 3,876,904	3,873,346
Residential 1-4 family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	2,066,023	2,048,051
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	745,583	800,395
Home equity line of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	905,249	863,163
Residential land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	18,611	18,889
Commercial construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	128,407	126,768
Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	13,031	16,080
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	589,669	692,051
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 211,571	$ 178,222

Bank segment - Allowance for l

Bank segment - Allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	$ 56,356	$ 55,331	$ 55,533	$ 50,038
Charge-offs	(4,897)	(3,193)	(12,471)	(8,656)
Recoveries	1,098	852	2,754	2,089
Provision	490	5,747	7,231	15,266
Valuation allowance, balance at the end of the period	53,047	58,737	53,047	58,737
Ending balance: individually evaluated for impairment	2,868		2,868		$ 4,083
Ending balance: collectively evaluated for impairment	50,179		50,179		51,450
Financing Receivables:
Total financing receivables	4,678,144		4,678,144		4,743,619
Ending balance: individually evaluated for impairment	36,054		36,054		51,759
Ending balance: collectively evaluated for impairment	4,642,090		4,642,090		4,691,860
Residential 1-4 family
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	3,130	4,384	2,873	4,186
Charge-offs	(522)	(373)	(528)	(433)
Recoveries	33	92	91	144
Provision	347	154	552	360
Valuation allowance, balance at the end of the period	2,988	4,257	2,988	4,257
Ending balance: individually evaluated for impairment	1,317		1,317		1,352
Ending balance: collectively evaluated for impairment	1,671		1,671		1,521
Financing Receivables:
Total financing receivables	2,066,023		2,066,023		2,048,051
Ending balance: individually evaluated for impairment	19,757		19,757		19,854
Ending balance: collectively evaluated for impairment	2,046,266		2,046,266		2,028,197
Commercial real estate
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	18,840	13,561	16,004	11,342
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(2,800)	1,289	36	3,508
Valuation allowance, balance at the end of the period	16,040	14,850	16,040	14,850
Ending balance: individually evaluated for impairment	72		72		80
Ending balance: collectively evaluated for impairment	15,968		15,968		15,924
Financing Receivables:
Total financing receivables	745,583		745,583		800,395
Ending balance: individually evaluated for impairment	1,281		1,281		1,569
Ending balance: collectively evaluated for impairment	744,302		744,302		798,826
Home equity line of credit
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	5,527	7,836	5,039	7,260
Charge-offs	0	(108)	(14)	(108)
Recoveries	164	15	294	46
Provision	(36)	(248)	336	297
Valuation allowance, balance at the end of the period	5,655	7,495	5,655	7,495
Ending balance: individually evaluated for impairment	409		409		215
Ending balance: collectively evaluated for impairment	5,246		5,246		4,824
Financing Receivables:
Total financing receivables	905,249		905,249		863,163
Ending balance: individually evaluated for impairment	7,078		7,078		6,158
Ending balance: collectively evaluated for impairment	898,171		898,171		857,005
Residential land
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	1,264	1,689	1,738	1,671
Charge-offs	0	0	(92)	0
Recoveries	259	187	477	306
Provision	(141)	23	(741)	(78)
Valuation allowance, balance at the end of the period	1,382	1,899	1,382	1,899
Ending balance: individually evaluated for impairment	373		373		789
Ending balance: collectively evaluated for impairment	1,009		1,009		949
Financing Receivables:
Total financing receivables	18,611		18,611		18,889
Ending balance: individually evaluated for impairment	2,385		2,385		3,629
Ending balance: collectively evaluated for impairment	16,226		16,226		15,260
Commercial construction
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	4,706	6,993	6,449	4,461
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	370	179	(1,373)	2,711
Valuation allowance, balance at the end of the period	5,076	7,172	5,076	7,172
Ending balance: individually evaluated for impairment	0		0		0
Ending balance: collectively evaluated for impairment	5,076		5,076		6,449
Financing Receivables:
Total financing receivables	128,407		128,407		126,768
Ending balance: individually evaluated for impairment	0		0		0
Ending balance: collectively evaluated for impairment	128,407		128,407		126,768
Residential construction
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	9	12	12	13
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	2	(2)	(1)	(3)
Valuation allowance, balance at the end of the period	11	10	11	10
Ending balance: individually evaluated for impairment	0		0		0
Ending balance: collectively evaluated for impairment	11		11		12
Financing Receivables:
Total financing receivables	13,031		13,031		16,080
Ending balance: individually evaluated for impairment	0		0		0
Ending balance: collectively evaluated for impairment	13,031		13,031		16,080
Commercial loans
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	14,552	17,085	16,618	17,208
Charge-offs	(1,215)	(833)	(3,477)	(3,138)
Recoveries	326	347	922	907
Provision	(595)	2,457	(995)	4,079
Valuation allowance, balance at the end of the period	13,068	19,056	13,068	19,056
Ending balance: individually evaluated for impairment	667		667		1,641
Ending balance: collectively evaluated for impairment	12,401		12,401		14,977
Financing Receivables:
Total financing receivables	589,669		589,669		692,051
Ending balance: individually evaluated for impairment	5,486		5,486		20,539
Ending balance: collectively evaluated for impairment	584,183		584,183		671,512
Consumer loans
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	8,328	3,771	6,800	3,897
Charge-offs	(3,160)	(1,879)	(8,360)	(4,977)
Recoveries	316	211	970	686
Provision	3,343	1,895	9,417	4,392
Valuation allowance, balance at the end of the period	8,827	3,998	8,827	3,998
Ending balance: individually evaluated for impairment	30		30		6
Ending balance: collectively evaluated for impairment	8,797		8,797		6,794
Financing Receivables:
Total financing receivables	211,571		211,571		178,222
Ending balance: individually evaluated for impairment	67		67		10
Ending balance: collectively evaluated for impairment	211,504		211,504		178,212
Unallocated
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	0	0	0	0
Valuation allowance, balance at the end of the period	0	$ 0	0	$ 0
Ending balance: collectively evaluated for impairment	$ 0		$ 0		$ 0

Bank segment - Credit risk pro

Bank segment - Credit risk profile - assigned grades (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Commercial real estate
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	$ 745,583	$ 800,395
Commercial real estate | Pass
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	647,599	701,657
Commercial real estate | Special mention
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	44,088	65,541
Commercial real estate | Substandard
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	53,896	33,197
Commercial real estate | Doubtful
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	0	0
Commercial real estate | Loss
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	0	0
Commercial construction
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	128,407	126,768
Commercial construction | Pass
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	103,892	102,955
Commercial construction | Special mention
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	22,500	0
Commercial construction | Substandard
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	2,015	23,813
Commercial construction | Doubtful
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	0	0
Commercial construction | Loss
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	0	0
Commercial loans
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	589,669	692,051
Commercial loans | Pass
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	539,336	614,139
Commercial loans | Special mention
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	25,053	25,229
Commercial loans | Substandard
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	23,130	52,683
Commercial loans | Doubtful
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	2,150	0
Commercial loans | Loss
Credit risk profile by internally assigned grade for loans
Loans and leases receivable before fees, gross	$ 0	$ 0

Bank segment - Credit risk p51

Bank segment - Credit risk profile - payment activity (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Credit risk profile based on payment activity for loans
Total past due	$ 27,855	$ 23,102
Current	4,650,289	4,720,517
Total financing receivables	4,678,144	4,743,619
Recorded Investment greater than 90 days and accruing	0	0
Residential 1-4 family
Credit risk profile based on payment activity for loans
Total past due	9,870	11,310
Current	2,056,153	2,036,741
Total financing receivables	2,066,023	2,048,051
Recorded Investment greater than 90 days and accruing	0	0
Commercial real estate
Credit risk profile based on payment activity for loans
Total past due	5,414	2,416
Current	740,169	797,979
Total financing receivables	745,583	800,395
Recorded Investment greater than 90 days and accruing	0	0
Home equity line of credit
Credit risk profile based on payment activity for loans
Total past due	3,480	2,986
Current	901,769	860,177
Total financing receivables	905,249	863,163
Recorded Investment greater than 90 days and accruing	0	0
Residential land
Credit risk profile based on payment activity for loans
Total past due	1,979	255
Current	16,632	18,634
Total financing receivables	18,611	18,889
Recorded Investment greater than 90 days and accruing	0	0
Commercial construction
Credit risk profile based on payment activity for loans
Total past due	0	0
Current	128,407	126,768
Total financing receivables	128,407	126,768
Recorded Investment greater than 90 days and accruing	0	0
Residential construction
Credit risk profile based on payment activity for loans
Total past due	0	0
Current	13,031	16,080
Total financing receivables	13,031	16,080
Recorded Investment greater than 90 days and accruing	0	0
Commercial loans
Credit risk profile based on payment activity for loans
Total past due	1,961	2,226
Current	587,708	689,825
Total financing receivables	589,669	692,051
Recorded Investment greater than 90 days and accruing	0	0
Consumer loans
Credit risk profile based on payment activity for loans
Total past due	5,151	3,909
Current	206,420	174,313
Total financing receivables	211,571	178,222
Recorded Investment greater than 90 days and accruing	0	0
30-59 days past due
Credit risk profile based on payment activity for loans
Total past due	15,356	11,504
30-59 days past due | Residential 1-4 family
Credit risk profile based on payment activity for loans
Total past due	3,905	5,467
30-59 days past due | Commercial real estate
Credit risk profile based on payment activity for loans
Total past due	5,414	2,416
30-59 days past due | Home equity line of credit
Credit risk profile based on payment activity for loans
Total past due	1,936	1,263
30-59 days past due | Residential land
Credit risk profile based on payment activity for loans
Total past due	498	0
30-59 days past due | Commercial construction
Credit risk profile based on payment activity for loans
Total past due	0	0
30-59 days past due | Residential construction
Credit risk profile based on payment activity for loans
Total past due	0	0
30-59 days past due | Commercial loans
Credit risk profile based on payment activity for loans
Total past due	1,095	413
30-59 days past due | Consumer loans
Credit risk profile based on payment activity for loans
Total past due	2,508	1,945
60-89 days past due
Credit risk profile based on payment activity for loans
Total past due	4,357	4,230
60-89 days past due | Residential 1-4 family
Credit risk profile based on payment activity for loans
Total past due	1,513	2,338
60-89 days past due | Commercial real estate
Credit risk profile based on payment activity for loans
Total past due	0	0
60-89 days past due | Home equity line of credit
Credit risk profile based on payment activity for loans
Total past due	177	381
60-89 days past due | Residential land
Credit risk profile based on payment activity for loans
Total past due	984	0
60-89 days past due | Commercial construction
Credit risk profile based on payment activity for loans
Total past due	0	0
60-89 days past due | Residential construction
Credit risk profile based on payment activity for loans
Total past due	0	0
60-89 days past due | Commercial loans
Credit risk profile based on payment activity for loans
Total past due	218	510
60-89 days past due | Consumer loans
Credit risk profile based on payment activity for loans
Total past due	1,465	1,001
Greater than 90 days
Credit risk profile based on payment activity for loans
Total past due	8,142	7,368
Greater than 90 days | Residential 1-4 family
Credit risk profile based on payment activity for loans
Total past due	4,452	3,505
Greater than 90 days | Commercial real estate
Credit risk profile based on payment activity for loans
Total past due	0	0
Greater than 90 days | Home equity line of credit
Credit risk profile based on payment activity for loans
Total past due	1,367	1,342
Greater than 90 days | Residential land
Credit risk profile based on payment activity for loans
Total past due	497	255
Greater than 90 days | Commercial construction
Credit risk profile based on payment activity for loans
Total past due	0	0
Greater than 90 days | Residential construction
Credit risk profile based on payment activity for loans
Total past due	0	0
Greater than 90 days | Commercial loans
Credit risk profile based on payment activity for loans
Total past due	648	1,303
Greater than 90 days | Consumer loans
Credit risk profile based on payment activity for loans
Total past due	$ 1,178	$ 963

Bank segment - Credit risk p52

Bank segment - Credit risk profile - summary (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Credit risk profile based on nonaccrual loans
Nonaccrual loans	$ 23,357	$ 23,325
Accruing loans 90 days or more past due	0	0
Total troubled debt restructuring loans not included above	21,797	37,637
Residential 1-4 family
Credit risk profile based on nonaccrual loans
Nonaccrual loans	12,853	11,154
Accruing loans 90 days or more past due	0	0
Total troubled debt restructuring loans not included above	11,592	14,450
Commercial real estate
Credit risk profile based on nonaccrual loans
Nonaccrual loans	0	223
Accruing loans 90 days or more past due	0	0
Total troubled debt restructuring loans not included above	1,281	1,346
Home equity line of credit
Credit risk profile based on nonaccrual loans
Nonaccrual loans	4,000	3,080
Accruing loans 90 days or more past due	0	0
Total troubled debt restructuring loans not included above	5,250	4,934
Residential land
Credit risk profile based on nonaccrual loans
Nonaccrual loans	1,022	878
Accruing loans 90 days or more past due	0	0
Total troubled debt restructuring loans not included above	1,555	2,751
Commercial construction
Credit risk profile based on nonaccrual loans
Nonaccrual loans	0	0
Accruing loans 90 days or more past due	0	0
Total troubled debt restructuring loans not included above	0	0
Residential construction
Credit risk profile based on nonaccrual loans
Nonaccrual loans	0	0
Accruing loans 90 days or more past due	0	0
Total troubled debt restructuring loans not included above	0	0
Commercial loans
Credit risk profile based on nonaccrual loans
Nonaccrual loans	3,691	6,708
Accruing loans 90 days or more past due	0	0
Total troubled debt restructuring loans not included above	2,052	14,146
Consumer loans
Credit risk profile based on nonaccrual loans
Nonaccrual loans	1,791	1,282
Accruing loans 90 days or more past due	0	0
Total troubled debt restructuring loans not included above	$ 67	$ 10

Bank segment - Principal balan

Bank segment - Principal balance of impaired loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Recorded investment:
With no related allowance recorded	$ 15,587		$ 15,587		$ 18,811
With an allowance recorded	20,467		20,467		32,948
Recorded investment	36,054		36,054		51,759
Unpaid principal balance:
With no related allowance recorded	20,112		20,112		23,200
With an allowance recorded	20,709		20,709		33,205
Unpaid principal balance	40,821		40,821		56,405
Related Allowance	2,868		2,868		4,083
Average recorded investment:
With no related allowance recorded	14,585	$ 28,378	15,700	$ 23,365
With an allowance recorded	19,948	32,768	21,704	35,519
Average recorded investment	34,533	61,146	37,404	58,884
Interest income recognized:
With no related allowance recorded	204	228	482	484
With an allowance recorded	416	264	1,307	887
Interest income recognized	620	492	1,789	1,371
Residential 1-4 family
Recorded investment:
With no related allowance recorded	9,987		9,987		9,571
With an allowance recorded	9,770		9,770		10,283
Recorded investment	19,757		19,757		19,854
Unpaid principal balance:
With no related allowance recorded	10,541		10,541		10,400
With an allowance recorded	9,972		9,972		10,486
Unpaid principal balance	20,513		20,513		20,886
Related Allowance	1,317		1,317		1,352
Average recorded investment:
With no related allowance recorded	9,650	10,069	9,503	10,378
With an allowance recorded	9,788	11,800	9,963	11,933
Average recorded investment	19,438	21,869	19,466	22,311
Interest income recognized:
With no related allowance recorded	70	65	230	268
With an allowance recorded	97	119	333	356
Interest income recognized	167	184	563	624
Commercial real estate
Recorded investment:
With no related allowance recorded	0		0		223
With an allowance recorded	1,281		1,281		1,346
Recorded investment	1,281		1,281		1,569
Unpaid principal balance:
With no related allowance recorded	0		0		228
With an allowance recorded	1,281		1,281		1,346
Unpaid principal balance	1,281		1,281		1,574
Related Allowance	72		72		80
Average recorded investment:
With no related allowance recorded	0	1,206	121	1,177
With an allowance recorded	1,284	2,444	1,292	1,939
Average recorded investment	1,284	3,650	1,413	3,116
Interest income recognized:
With no related allowance recorded	0	0	11	0
With an allowance recorded	13	0	41	0
Interest income recognized	13	0	52	0
Home equity line of credit
Recorded investment:
With no related allowance recorded	1,565		1,565		1,500
With an allowance recorded	5,513		5,513		4,658
Recorded investment	7,078		7,078		6,158
Unpaid principal balance:
With no related allowance recorded	1,889		1,889		1,900
With an allowance recorded	5,543		5,543		4,712
Unpaid principal balance	7,432		7,432		6,612
Related Allowance	409		409		215
Average recorded investment:
With no related allowance recorded	1,918	1,220	2,108	1,035
With an allowance recorded	5,076	4,165	4,670	3,470
Average recorded investment	6,994	5,385	6,778	4,505
Interest income recognized:
With no related allowance recorded	32	6	97	15
With an allowance recorded	68	36	164	91
Interest income recognized	100	42	261	106
Residential land
Recorded investment:
With no related allowance recorded	1,134		1,134		1,218
With an allowance recorded	1,251		1,251		2,411
Recorded investment	2,385		2,385		3,629
Unpaid principal balance:
With no related allowance recorded	1,425		1,425		1,803
With an allowance recorded	1,251		1,251		2,411
Unpaid principal balance	2,676		2,676		4,214
Related Allowance	373		373		789
Average recorded investment:
With no related allowance recorded	1,209	1,521	1,080	1,532
With an allowance recorded	1,251	2,915	1,620	3,090
Average recorded investment	2,460	4,436	2,700	4,622
Interest income recognized:
With no related allowance recorded	73	16	107	47
With an allowance recorded	12	44	73	165
Interest income recognized	85	60	180	212
Commercial construction
Recorded investment:
With no related allowance recorded	0		0		0
With an allowance recorded	0		0		0
Recorded investment	0		0		0
Unpaid principal balance:
With no related allowance recorded	0		0		0
With an allowance recorded	0		0		0
Unpaid principal balance	0		0		0
Related Allowance	0		0		0
Average recorded investment:
With no related allowance recorded	0	0	0	0
With an allowance recorded	0	0	0	0
Average recorded investment	0	0	0	0
Interest income recognized:
With no related allowance recorded	0	0	0	0
With an allowance recorded	0	0	0	0
Interest income recognized	0	0	0	0
Residential construction
Recorded investment:
With no related allowance recorded	0		0		0
With an allowance recorded	0		0		0
Recorded investment	0		0		0
Unpaid principal balance:
With no related allowance recorded	0		0		0
With an allowance recorded	0		0		0
Unpaid principal balance	0		0		0
Related Allowance	0		0		0
Average recorded investment:
With no related allowance recorded	0	0	0	0
With an allowance recorded	0	0	0	0
Average recorded investment	0	0	0	0
Interest income recognized:
With no related allowance recorded	0	0	0	0
With an allowance recorded	0	0	0	0
Interest income recognized	0	0	0	0
Commercial loans
Recorded investment:
With no related allowance recorded	2,901		2,901		6,299
With an allowance recorded	2,585		2,585		14,240
Recorded investment	5,486		5,486		20,539
Unpaid principal balance:
With no related allowance recorded	6,257		6,257		8,869
With an allowance recorded	2,595		2,595		14,240
Unpaid principal balance	8,852		8,852		23,109
Related Allowance	667		667		1,641
Average recorded investment:
With no related allowance recorded	1,808	14,352	2,888	9,240
With an allowance recorded	2,482	11,433	4,104	15,075
Average recorded investment	4,290	25,785	6,992	24,315
Interest income recognized:
With no related allowance recorded	29	141	37	154
With an allowance recorded	225	65	694	275
Interest income recognized	254	206	731	429
Consumer loans
Recorded investment:
With no related allowance recorded	0		0		0
With an allowance recorded	67		67		10
Recorded investment	67		67		10
Unpaid principal balance:
With no related allowance recorded	0		0		0
With an allowance recorded	67		67		10
Unpaid principal balance	67		67		10
Related Allowance	30		30		$ 6
Average recorded investment:
With no related allowance recorded	0	10	0	3
With an allowance recorded	67	11	55	12
Average recorded investment	67	21	55	15
Interest income recognized:
With no related allowance recorded	0	0	0	0
With an allowance recorded	1	0	2	0
Interest income recognized	$ 1	$ 0	$ 2	$ 0

Bank segment - Troubled debt r

Bank segment - Troubled debt restructuring - narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Troubled debt restructurings real estate loans
Troubled debt restructurings
Financing receivable modifications minimum, period of payment default of loans determined to be TDRs (in days)	90 days
Commitments to lend additional funds to borrows with impaired or modified loans	$ 0	$ 2,600,000
Consumer mortgage loans collateralized by residential real estate property in foreclosure process	$ 4,900,000	$ 3,900,000
Land loans
Troubled debt restructurings
Period of interest-only monthly payment term loan (in years)	3 years
Land loans | Maximum
Troubled debt restructurings
Extension of maturity date (in years)	5 years

Bank segment - Loan modificati

Bank segment - Loan modifications (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract	Dec. 31, 2016USD ($)
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			$ 21,797		$ 37,637
Residential 1-4 family
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			11,592		14,450
Commercial real estate
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			1,281		1,346
Home equity line of credit
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			5,250		4,934
Residential land
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			1,555		2,751
Commercial construction
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			0		0
Residential construction
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			0		0
Commercial loans
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			2,052		14,146
Consumer loans
Financing Receivable, Modifications [Line Items]
Post-modification outstanding recorded investment			$ 67		$ 10
Troubled debt restructurings real estate loans
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	18	20	38	56
Pre-modification outstanding recorded investment	$ 1,275	$ 4,981	$ 3,072	$ 25,183
Post-modification outstanding recorded investment	1,275	4,981	3,066	25,296
Net increase in allowance	$ 222	$ 336	$ 387	$ 1,520
Troubled debt restructurings real estate loans | Residential 1-4 family
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	2	2	7	11
Pre-modification outstanding recorded investment	$ 83	$ 251	$ 955	$ 2,239
Post-modification outstanding recorded investment	83	251	963	2,351
Net increase in allowance	$ 0	$ 46	$ 45	$ 305
Troubled debt restructurings real estate loans | Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	0	0	0
Pre-modification outstanding recorded investment	$ 0	$ 0	$ 0	$ 0
Post-modification outstanding recorded investment	0	0	0	0
Net increase in allowance	$ 0	$ 0	$ 0	$ 0
Troubled debt restructurings real estate loans | Home equity line of credit
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	15	12	28	30
Pre-modification outstanding recorded investment	$ 862	$ 1,268	$ 1,386	$ 2,705
Post-modification outstanding recorded investment	862	1,268	1,372	2,705
Net increase in allowance	$ 184	$ 237	$ 277	$ 492
Troubled debt restructurings real estate loans | Residential land
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	0	0	1
Pre-modification outstanding recorded investment	$ 0	$ 0	$ 0	$ 120
Post-modification outstanding recorded investment	0	0	0	121
Net increase in allowance	$ 0	$ 0	$ 0	$ 0
Troubled debt restructurings real estate loans | Commercial construction
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	0	0	0
Pre-modification outstanding recorded investment	$ 0	$ 0	$ 0	$ 0
Post-modification outstanding recorded investment	0	0	0	0
Net increase in allowance	$ 0	$ 0	$ 0	$ 0
Troubled debt restructurings real estate loans | Residential construction
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	0	0	0
Pre-modification outstanding recorded investment	$ 0	$ 0	$ 0	$ 0
Post-modification outstanding recorded investment	0	0	0	0
Net increase in allowance	$ 0	$ 0	$ 0	$ 0
Troubled debt restructurings real estate loans | Commercial loans
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	1	6	2	14
Pre-modification outstanding recorded investment	$ 330	$ 3,462	$ 672	$ 20,119
Post-modification outstanding recorded investment	330	3,462	672	20,119
Net increase in allowance	$ 38	$ 53	$ 38	$ 723
Troubled debt restructurings real estate loans | Consumer loans
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	0	1	0
Pre-modification outstanding recorded investment	$ 0	$ 0	$ 59	$ 0
Post-modification outstanding recorded investment	0	0	59	0
Net increase in allowance	$ 0	$ 0	$ 27	$ 0

Bank segment - Troubled debt56

Bank segment - Troubled debt restructuring that subsequently defaulted (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	1	1	2
Recorded investment | $	$ 0	$ 239	$ 222	$ 264
Residential 1-4 family
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	1	1	1
Recorded investment | $	$ 0	$ 239	$ 222	$ 239
Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	0	0	0
Recorded investment | $	$ 0	$ 0	$ 0	$ 0
Home equity line of credit
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	0	0	0
Recorded investment | $	$ 0	$ 0	$ 0	$ 0
Residential land
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	0	0	0
Recorded investment | $	$ 0	$ 0	$ 0	$ 0
Commercial construction
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	0	0	0
Recorded investment | $	$ 0	$ 0	$ 0	$ 0
Residential construction
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	0	0	0
Recorded investment | $	$ 0	$ 0	$ 0	$ 0
Commercial loans
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	0	0	1
Recorded investment | $	$ 0	$ 0	$ 0	$ 25
Consumer loans
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	0	0	0
Recorded investment | $	$ 0	$ 0	$ 0	$ 0

Bank segment - Mortgage servic

Bank segment - Mortgage servicing rights (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Valuation Allowance [Roll Forward]
Weighted average discount rate			2.826%
American Savings Bank (ASB)
Servicing Asset at Amortized Cost [Line Items]
Repurchase reserve						$ 100		$ 100
Mortgage service fees	$ 800	$ 700	$ 2,300	$ 2,100
Movement in Mortgage Loans on Real Estate [Roll Forward]
Servicing asset - beginning balance			9,373
Servicing asset - ending balance	9,070		9,070		$ 9,373
American Savings Bank (ASB) | Mortgage Servicing Rights (MSR)
Servicing Asset at Amortized Cost [Line Items]
Gross carrying amount						18,463	$ 17,271
Accumulated amortization						(9,393)	(7,898)
Valuation allowance	0	0	0	0	0	0	0	0
Net carrying amount						9,070	9,373	$ 9,191
Movement in Mortgage Loans on Real Estate [Roll Forward]
Servicing asset - beginning balance	9,181	9,016	9,373	8,884	8,884
Amount capitalized	394	824	1,192	1,944
Amortization	(505)	(649)	(1,495)	(1,637)
Other-than-temporary impairment	0	0	0	0
Servicing asset - ending balance	9,070	9,191	9,070	9,191	9,373
Valuation Allowance [Roll Forward]
Valuation allowance, beginning balance	0	0	0	0	0
Provision (recovery)	0	0	0	0
Other-than-temporary impairment	0	0	0	0
Valuation allowance, ending balance	0	0	$ 0	0	$ 0
Unpaid principal balance						1,212,730	1,188,380
Weighted average note-rate			3.94%		3.96%
Weighted average discount rate			10.00%		9.40%
Weighted average prepayment speed			9.20%		8.50%
Prepayment rate - 25 points adverse rate change						(878)	(567)
Prepayment rate - 50 points adverse rate change						(1,847)	(1,154)
Discount rate - 25 points adverse rate change						(111)	(128)
Discount rate - 50 points adverse rate change						$ (220)	$ (254)
American Savings Bank (ASB) | Measurement Band A
Valuation Allowance [Roll Forward]
Measurement band percent for risk categorization			0.50%
American Savings Bank (ASB) | Measurement Band B
Valuation Allowance [Roll Forward]
Measurement band percent for risk categorization			1.00%
American Savings Bank (ASB) | Residential loan
Servicing Asset at Amortized Cost [Line Items]
Proceeds from sale of mortgage loans	39,800	70,000	$ 119,700	168,500
Gain on sale of mortgage loans	$ 500	$ 2,400	$ 1,900	$ 5,100

Bank segment - Repurchase Agre

Bank segment - Repurchase Agreements (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Offsetting Liabilities [Line Items]
Gross amount of recognized liabilities	$ 104	$ 93
Gross amount offset in the Balance Sheet	0	0
Securities sold under agreements to repurchase	104	93
Securities sold under agreements to repurchase collateral, financial instruments	165	116
Securities sold under agreements to repurchase, cash collateral pledged	0	0
Financial Institution
Offsetting Liabilities [Line Items]
Securities sold under agreements to repurchase	0	0
Securities sold under agreements to repurchase collateral, financial instruments	0	0
Securities sold under agreements to repurchase, cash collateral pledged	0	0
Government Entities
Offsetting Liabilities [Line Items]
Securities sold under agreements to repurchase	0	14
Securities sold under agreements to repurchase collateral, financial instruments	0	15
Securities sold under agreements to repurchase, cash collateral pledged	0	0
Commercial account holders
Offsetting Liabilities [Line Items]
Securities sold under agreements to repurchase	104	79
Securities sold under agreements to repurchase collateral, financial instruments	165	101
Securities sold under agreements to repurchase, cash collateral pledged	$ 0	$ 0

Bank segment - Derivatives (De

Bank segment - Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Derivative instrument
Net gains (losses) recognized in the Statement of Income	$ (209)	$ 151	$ (239)	$ 325
Not designated as a hedging instrument
Derivative instrument
Asset derivatives	7		7		$ 453
Liability derivatives	2		2		209
Interest rate lock commitments
Derivative instrument
Notional amount	385		385		25,883
Fair value	7		7		421
Interest rate lock commitments | Not designated as a hedging instrument
Derivative instrument
Asset derivatives	7		7		445
Liability derivatives	0		0		24
Interest rate lock commitments | Not designated as a hedging instrument | Mortgage banking income
Derivative instrument
Net gains (losses) recognized in the Statement of Income	(119)	48	(414)	459
Forward commitments
Derivative instrument
Notional amount	500		500		30,813
Fair value	(2)		(2)		(177)
Forward commitments | Not designated as a hedging instrument
Derivative instrument
Asset derivatives	0		0		8
Liability derivatives	2		2		$ 185
Forward commitments | Not designated as a hedging instrument | Mortgage banking income
Derivative instrument
Net gains (losses) recognized in the Statement of Income	$ (90)	$ 103	$ 175	$ (134)

Bank segment - Contingencies (

Bank segment - Contingencies (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
American Savings Bank (ASB)
Loss Contingencies [Line Items]
Unfunded commitments to fund the company's LIHTC	$ 18.6	$ 14

Credit agreements and long-te61

Credit agreements and long-term debt (Details)	Oct. 06, 2017USD ($)	Jun. 29, 2017USD ($)	Sep. 30, 2017USD ($)Institution	Dec. 31, 2016USD ($)
Debt Disclosure [Abstract]
Number of financial institutions (in institutions) | Institution			8
Line of credit facility
Credit agreement
Revolving noncollateralized credit facility with a letter of credit sub-facility			$ 150,000,000
Amount outstanding under facilities			0	$ 0
Line of credit facility | Hawaiian Electric Company
Credit agreement
Revolving noncollateralized credit facility with a letter of credit sub-facility			200,000,000
Amount outstanding under facilities			$ 0	$ 0
Special Purpose Revenue Bonds | Refunding Series 2017A Special Purpose Revenue Bonds [Member]
Credit agreement
Aggregate principal amount		$ 125,000,000
Fixed coupon interest rate		3.10%
Special Purpose Revenue Bonds | Refunding Series 2017B Special Purpose Revenue Bonds
Credit agreement
Aggregate principal amount		$ 140,000,000
Fixed coupon interest rate		4.00%
Special Purpose Revenue Bonds | Refunding Series 2007B Special Purpose Revenue Bonds
Credit agreement
Fixed coupon interest rate		4.60%
Aggregate principal amount		$ 125,000,000
Special Purpose Revenue Bonds | Refunding Series 2007B Special Purpose Revenue Bonds | Subsequent Event
Credit agreement
Repayments of debt	$ 125,000,000
Special Purpose Revenue Bonds | Series 2007A Special Purpose Revenue Bonds
Credit agreement
Fixed coupon interest rate		4.65%
Aggregate principal amount		$ 140,000,000
Special Purpose Revenue Bonds | Euro Term Loan | Subsequent Event
Credit agreement
Proceeds from Department loan	$ 125,000,000
Debt instrument term	364 days
Interest rate for first month	1.99%
Special Purpose Revenue Bonds | Hawaiian Electric Company | Refunding Series 2017A Special Purpose Revenue Bonds [Member]
Credit agreement
Proceeds from Department loan		62,000,000
Special Purpose Revenue Bonds | Hawaiian Electric Company | Refunding Series 2017B Special Purpose Revenue Bonds
Credit agreement
Proceeds from Department loan		100,000,000
Special Purpose Revenue Bonds | HELCO | Refunding Series 2017A Special Purpose Revenue Bonds [Member]
Credit agreement
Proceeds from Department loan		8,000,000
Special Purpose Revenue Bonds | HELCO | Refunding Series 2017B Special Purpose Revenue Bonds
Credit agreement
Proceeds from Department loan		20,000,000
Special Purpose Revenue Bonds | Maui Electric | Refunding Series 2017A Special Purpose Revenue Bonds [Member]
Credit agreement
Proceeds from Department loan		55,000,000
Special Purpose Revenue Bonds | Maui Electric | Refunding Series 2017B Special Purpose Revenue Bonds
Credit agreement
Proceeds from Department loan		$ 20,000,000

Shareholders' equity - Accumula

Shareholders' equity - Accumulated other comprehensive income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning Balance			$ 2,066,753	$ 1,927,640
Current period other comprehensive income	$ 554	$ (1,669)	3,909	9,239
Ending Balance	2,103,022	2,068,388	2,103,022	2,068,388
AOCI
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning Balance			(33,129)	(26,262)
Current period other comprehensive income			3,909	9,239
Ending Balance	(29,220)	(17,023)	(29,220)	(17,023)
Net unrealized gains (losses) on securities
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning Balance			(7,931)	(1,872)
Current period other comprehensive income			2,452	7,837
Ending Balance	(5,479)	5,965	(5,479)	5,965
Unrealized gains (losses) on derivatives
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning Balance			(454)	(54)
Current period other comprehensive income			454	459
Ending Balance	0	405	0	405
Retirement benefit plans
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning Balance			(24,744)	(24,336)
Current period other comprehensive income			1,003	943
Ending Balance	(23,741)	(23,393)	(23,741)	(23,393)
Hawaiian Electric Company, Inc. and Subsidiaries
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning Balance			1,799,787	1,728,325
Current period other comprehensive income	22	151	521	412
Ending Balance	1,829,075	1,766,727	1,829,075	1,766,727
Hawaiian Electric Company, Inc. and Subsidiaries | AOCI
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning Balance			(322)	925
Current period other comprehensive income			521	412
Ending Balance	199	1,337	199	1,337
Hawaiian Electric Company, Inc. and Subsidiaries | Unrealized gains (losses) on derivatives
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning Balance			(454)	0
Current period other comprehensive income			454	405
Ending Balance	0	405	0	405
Hawaiian Electric Company, Inc. and Subsidiaries | Retirement benefit plans
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning Balance			132	925
Current period other comprehensive income			67	7
Ending Balance	$ 199	$ 932	$ 199	$ 932

Shareholders' equity - Reclassi

Shareholders' equity - Reclassification out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassifications out of accumulated other comprehensive income/(loss)
Total revenues	$ 673,185	$ 646,055	$ 1,897,028	$ 1,763,259
Total reclassifications	346	157	1,457	464
Hawaiian Electric Company, Inc. and Subsidiaries
Reclassifications out of accumulated other comprehensive income/(loss)
Total revenues	598,769	572,253	1,674,255	1,549,700
Total reclassifications	22	(170)	521	(166)
Bank
Reclassifications out of accumulated other comprehensive income/(loss)
Total revenues	74,289	73,708	222,474	213,297
Electric utility
Reclassifications out of accumulated other comprehensive income/(loss)
Total revenues	598,769	572,253	1,674,255	1,549,700
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost
Reclassifications out of accumulated other comprehensive income/(loss)
Total reclassifications	3,942	3,641	11,793	10,877
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost | Hawaiian Electric Company, Inc. and Subsidiaries
Reclassifications out of accumulated other comprehensive income/(loss)
Total reclassifications	3,618	3,314	10,857	9,941
Impact of D&Os of the PUC included in regulatory assets
Reclassifications out of accumulated other comprehensive income/(loss)
Total reclassifications	(3,596)	(3,311)	(10,790)	(9,934)
Impact of D&Os of the PUC included in regulatory assets | Hawaiian Electric Company, Inc. and Subsidiaries
Reclassifications out of accumulated other comprehensive income/(loss)
Total reclassifications	(3,596)	(3,311)	(10,790)	(9,934)
Reclassification out of Accumulated Other Comprehensive Income | Net unrealized gains (losses) on securities | Bank
Reclassifications out of accumulated other comprehensive income/(loss)
Total revenues	0	0	0	360
Reclassification out of Accumulated Other Comprehensive Income | Unrealized gains (losses) on derivatives | Forward commitments | Hawaiian Electric Company, Inc. and Subsidiaries
Reclassifications out of accumulated other comprehensive income/(loss)
Total reclassifications	0	(173)	454	(173)
Reclassification out of Accumulated Other Comprehensive Income | Unrealized gains (losses) on derivatives | Interest rate contracts
Reclassifications out of accumulated other comprehensive income/(loss)
Total reclassifications	0	0	0	54
Reclassification out of Accumulated Other Comprehensive Income | Unrealized gains (losses) on derivatives | Electric utility | Forward commitments
Reclassifications out of accumulated other comprehensive income/(loss)
Total reclassifications	$ 0	$ (173)	$ 454	$ (173)

Retirement benefits (Details)

Retirement benefits (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Defined benefit plans
Expected payments for remainder of fiscal year	$ 2,000,000		$ 2,000,000
Retirement benefits expense			$ 25,000,000	$ 26,000,000
Number of years for which regulatory asset/liability for each utility will be amortized, beginning with respective utility's next rate case (in years)			5 years
Defined contribution plan, expenses recognized			$ 5,100,000	4,100,000
Cash contributions by the employer to defined contribution plan			5,000,000	4,600,000
Hawaiian Electric Company, Inc. and Subsidiaries
Defined benefit plans
Expected payments for remainder of fiscal year	1,000,000		1,000,000
Retirement benefits expense			22,000,000	23,000,000
Defined contribution plan, expenses recognized			1,400,000	1,200,000
Cash contributions by the employer to defined contribution plan			1,400,000	1,200,000
Pension benefits
Defined benefit plans
Contributions made to defined benefit plans			50,000,000	49,000,000
Contributions expected to be paid in current year			67,000,000		$ 65,000,000
Service cost	16,271,000	$ 15,126,000	48,635,000	45,430,000
Interest cost	20,304,000	20,396,000	60,881,000	61,154,000
Expected return on plan assets	(25,689,000)	(24,640,000)	(77,056,000)	(73,920,000)
Amortization of net prior service gain	(14,000)	(15,000)	(41,000)	(43,000)
Amortization of net actuarial loss	6,638,000	6,228,000	19,858,000	18,605,000
Net periodic pension/benefit cost	17,510,000	17,095,000	52,277,000	51,226,000
Impact of PUC D&Os	(4,534,000)	(4,653,000)	(14,557,000)	(13,464,000)
Net periodic pension/benefit cost (adjusted for impact of PUC D&Os)	12,976,000	12,442,000	37,720,000	37,762,000
Pension benefits | American Savings Bank (ASB)
Defined benefit plans
Contributions expected to be paid in current year			0		0
Pension benefits | Hawaiian Electric Company, Inc. and Subsidiaries
Defined benefit plans
Contributions made to defined benefit plans			49,000,000	48,000,000
Contributions expected to be paid in current year			66,000,000		64,000,000
Service cost	15,764,000	14,699,000	47,294,000	44,097,000
Interest cost	18,659,000	18,702,000	55,974,000	56,106,000
Expected return on plan assets	(23,973,000)	(22,908,000)	(71,919,000)	(68,725,000)
Amortization of net prior service gain	2,000	3,000	6,000	10,000
Amortization of net actuarial loss	6,098,000	5,674,000	18,294,000	17,020,000
Net periodic pension/benefit cost	16,550,000	16,170,000	49,649,000	48,508,000
Impact of PUC D&Os	(4,534,000)	(4,653,000)	(14,557,000)	(13,464,000)
Net periodic pension/benefit cost (adjusted for impact of PUC D&Os)	12,016,000	11,517,000	35,092,000	35,044,000
Pension benefits | Hawaiian Electric Industries, Inc.
Defined benefit plans
Contributions expected to be paid in current year			1,000,000		$ 1,000,000
Other benefits
Defined benefit plans
Service cost	843,000	831,000	2,530,000	2,499,000
Interest cost	2,363,000	2,417,000	7,089,000	7,254,000
Expected return on plan assets	(3,078,000)	(3,064,000)	(9,248,000)	(9,207,000)
Amortization of net prior service gain	(448,000)	(449,000)	(1,345,000)	(1,345,000)
Amortization of net actuarial loss	283,000	200,000	848,000	603,000
Net periodic pension/benefit cost	(37,000)	(65,000)	(126,000)	(196,000)
Impact of PUC D&Os	346,000	336,000	1,019,000	1,008,000
Net periodic pension/benefit cost (adjusted for impact of PUC D&Os)	309,000	271,000	893,000	812,000
Other benefits | Hawaiian Electric Company, Inc. and Subsidiaries
Defined benefit plans
Service cost	839,000	821,000	2,515,000	2,463,000
Interest cost	2,279,000	2,334,000	6,837,000	7,003,000
Expected return on plan assets	(3,037,000)	(3,023,000)	(9,110,000)	(9,072,000)
Amortization of net prior service gain	(451,000)	(451,000)	(1,353,000)	(1,353,000)
Amortization of net actuarial loss	275,000	198,000	826,000	595,000
Net periodic pension/benefit cost	(95,000)	(121,000)	(285,000)	(364,000)
Impact of PUC D&Os	346,000	336,000	1,019,000	1,008,000
Net periodic pension/benefit cost (adjusted for impact of PUC D&Os)	$ 251,000	$ 215,000	$ 734,000	$ 644,000

Share-based compensation - Narr

Share-based compensation - Narrative (Details) - USD ($) $ in Millions	Mar. 01, 2014	Jul. 31, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based compensation
Income tax benefit from compensation expense			$ 0.4	$ 0.5	$ 1.5	$ 1.2
Restricted stock units
Share-based compensation
Cash paid to directors in lieu of stock awards					3.4	2.7
Income tax benefit from compensation expense					1.1	0.9
Unrecognized share based compensation			4.8		$ 4.8
Weighted average period for recognition of unrecognized compensation cost (in years)					2 years 7 months 6 days
Long-term Incentive Plan
Share-based compensation
Payment award, low end of range (as a percent)					0.00%
Payment award, high end of range (as a percent)					200.00%
Award performance period (in years)					3 years
LTIP linked to TRS
Share-based compensation
Cash paid to directors in lieu of stock awards					$ 1.9
Unrecognized share based compensation			1		$ 1
Weighted average period for recognition of unrecognized compensation cost (in years)					2 years 3 months 18 days
Measurement period for total return to shareholders (in years)					3 years
Tax benefits related to awards vested					$ 0.7
LTIP awards linked to other performance conditions
Share-based compensation
Cash paid to directors in lieu of stock awards					4.2	3.6
Income tax benefit from compensation expense					1.6	$ 1.4
Unrecognized share based compensation			$ 3.4		$ 3.4
Weighted average period for recognition of unrecognized compensation cost (in years)					2 years 3 months 18 days
Equity and Incentive Plan
Share-based compensation
Number of additional shares authorized (in shares)	1,500,000
Shares available for future issuance (in shares)			3,300,000		3,300,000
Number of share issuable upon vesting and achievement of performance goals (in shares)			400,000		400,000
Nonemployee Director Stock Plan
Share-based compensation
Shares available for future grant (in shares)			85,428		85,428
Cash paid to directors in lieu of stock awards		$ 0.2

Share-based compensation - Summ

Share-based compensation - Summary of income taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based compensation
Share-based compensation expense	$ 1.1	$ 1.6	$ 4.4	$ 3.6
Income tax benefit	0.4	0.5	1.5	1.2
Hawaiian Electric Company, Inc. and Subsidiaries
Share-based compensation
Share-based compensation expense	0.4	0.5	1.6	1
Income tax benefit	$ 0.2	$ 0.2	$ 0.6	$ 0.4

Share-based compensation - 2011

Share-based compensation - 2011 Director Plan (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based compensation
Income tax benefit from compensation expense	$ 0.4	$ 0.5	$ 1.5	$ 1.2
Common stock
Share-based compensation
Shares granted (in shares)	0	19,846	35,770	19,846
Fair value measurement of shares granted and vested	$ 0	$ 0.6	$ 1.2	$ 0.6
Income tax benefit from compensation expense	$ 0	$ 0.2	$ 0.5	$ 0.2

Share-based compensation - Su68

Share-based compensation - Summary of changes in share based compensation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restricted stock units
Restricted stock awards and restricted stock units
Outstanding, beginning of period (in shares)	206,483	225,752	220,683	210,634
Granted (in shares)	0	766	97,873	95,048
Vested (in shares)	(687)	(4,419)	(89,681)	(83,583)
Forfeited (in shares)	0	(2,352)	(23,079)	(2,352)
Outstanding, end of period (in shares)	205,796	219,747	205,796	219,747
Weighted-average grant-date fair value per share
Outstanding, beginning of period (in dollars per share)	$ 31.50	$ 29.59	$ 29.57	$ 28.82
Granted (in dollars per share)	0	30.65	33.47	29.91
Vested (in dollars per share)	24.48	27.26	28.84	27.88
Forfeited (in dollars per share)	0	29.69	31.50	29.69
Outstanding, end of period (in dollars per share)	$ 31.53	$ 29.64	$ 31.53	$ 29.64
Total weighted-average grant-date fair value	$ 0	$ 0	$ 3.3	$ 2.8
LTIP linked to TRS
Restricted stock awards and restricted stock units
Outstanding, beginning of period (in shares)	33,770	83,947	83,106	162,500
Granted (in shares)	0	0	37,204	0
Vested (in shares)	0	0	(83,106)	(78,553)
Forfeited (in shares)	0	(175)	(3,434)	(175)
Outstanding, end of period (in shares)	33,770	83,772	33,770	83,772
Weighted-average grant-date fair value per share
Outstanding, beginning of period (in dollars per share)	$ 39.51	$ 22.95	$ 22.95	$ 27.66
Granted (in dollars per share)	0	0	39.51	0
Vested (in dollars per share)	0	0	22.95	32.69
Forfeited (in dollars per share)	0	22.95	39.51	22.95
Outstanding, end of period (in dollars per share)	$ 39.51	$ 22.95	$ 39.51	$ 22.95
Total weighted-average grant-date fair value	$ 0	$ 0	$ 1.5	$ 0
LTIP awards linked to other performance conditions
Restricted stock awards and restricted stock units
Outstanding, beginning of period (in shares)	135,078	113,550	109,816	222,647
Granted (in shares)	0	0	148,818	0
Vested (in shares)	0	0	(109,816)	(109,097)
Forfeited (in shares)	0	(699)	(13,740)	(699)
Outstanding, end of period (in shares)	135,078	112,851	135,078	112,851
Weighted-average grant-date fair value per share
Outstanding, beginning of period (in dollars per share)	$ 33.47	$ 25.18	$ 25.18	$ 26.02
Granted (in dollars per share)	0	0	33.47	0
Vested (in dollars per share)	0	0	25.18	26.89
Forfeited (in dollars per share)	0	25.19	33.48	25.19
Outstanding, end of period (in dollars per share)	$ 33.47	$ 25.18	$ 33.47	$ 25.18
Total weighted-average grant-date fair value	$ 0	$ 0	$ 5	$ 0

Share-based compensation - Fair

Share-based compensation - Fair value assumptions (Details) - LTIP linked to TRS	9 Months Ended
	Sep. 30, 2017$ / shares
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Risk-free interest rate (as a percent)	1.46%
Expected life (in years)	3 years
Expected volatility (as a percent)	20.10%
Range of expected volatility for Peer Group, minimum (as a percent)	15.40%
Range of expected volatility for Peer Group, maximum (as a percent)	26.00%
Grant date fair value (in dollars per share)	$ 39.51

Income taxes (Details)

Income taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Contingency [Line Items]
Effective tax rate (as a percent)	36.00%	29.00%	35.00%	32.00%
Income tax expense, expected depreciation expense increase			$ 120
Hawaiian Electric Company, Inc. and Subsidiaries
Income Tax Contingency [Line Items]
Effective tax rate (as a percent)	36.00%	37.00%	36.00%	37.00%

Cash flows (Details)

Cash flows (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Supplemental disclosures of cash flow information
Interest paid to non-affiliates	$ 62	$ 61
Income taxes paid (including refundable credits)	32	19
Income taxes refunded (including refundable credits)	0	45
Supplemental disclosures of noncash activities
Estimated fair value of noncash contributions in aid of construction (investing)	3	12
Unpaid invoices and accruals for capital expenditures (investing)
Change during the period	31	(6)
Balance, end of period	116	64
Common stock dividends reinvested in HEI common stock (financing)	0	17
Loans transferred from held for investment to held for sale (investing)	41	14
Common stock issued (gross) for director and executive/management compensation (financing)	11	7
Obligations to fund low income housing investments (investing)	10	0
Hawaiian Electric Company, Inc. and Subsidiaries
Supplemental disclosures of cash flow information
Interest paid to non-affiliates	45	43
Income taxes paid (including refundable credits)	9	0
Income taxes refunded (including refundable credits)	0	20
Supplemental disclosures of noncash activities
Estimated fair value of noncash contributions in aid of construction (investing)	3	12
Unpaid invoices and accruals for capital expenditures (investing)
Change during the period	29	(7)
Balance, end of period	$ 113	$ 63

Fair value measurements - Summa

Fair value measurements - Summary of financial assets and liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financial assets
Available-for-sale investment securities	$ 1,320,110	$ 1,105,182
Financial liabilities
Short-term borrowings—other than bank	24,498	0
Other bank borrowings	153,552	192,618
American Savings Bank (ASB)
Financial assets
Available-for-sale investment securities	1,320,110	1,105,182
Mortgage-servicing rights	9,070	9,373
Carrying or notional amount
Financial assets
Money market funds		13,085
Available-for-sale investment securities	1,320,110	1,105,182
Stock in Federal Home Loan Bank	9,706	11,218
Loans receivable, net	4,638,962	4,701,977
Mortgage-servicing rights	9,070	9,373
Bank-owned life insurance	147,391	143,197
Derivative assets	8,399	23,578
Financial liabilities
Deposit liabilities	5,752,326	5,548,929
Short-term borrowings—other than bank	24,498
Other bank borrowings	153,552	192,618
Long-term debt, net	1,618,446	1,619,019
Derivative liabilities	500	53,852
Carrying or notional amount | Hawaiian Electric Company, Inc. and Subsidiaries
Financial assets
Derivative assets	8,014
Financial liabilities
Short-term borrowings	6,000
Long-term debt, net	1,318,623	1,319,260
Derivative liabilities		20,734
Estimated fair value
Financial assets
Money market funds		13,085
Available-for-sale investment securities	1,320,110	1,105,182
Stock in Federal Home Loan Bank	9,706	11,218
Loans receivable, net	4,806,937	4,852,826
Mortgage-servicing rights	12,091	13,216
Bank-owned life insurance	147,391	143,197
Derivative assets	591	453
Financial liabilities
Deposit liabilities	5,748,858	5,546,644
Short-term borrowings—other than bank	24,498
Other bank borrowings	153,717	193,991
Long-term debt, net	1,747,972	1,704,717
Derivative liabilities	2	952
Estimated fair value | Hawaiian Electric Company, Inc. and Subsidiaries
Financial assets
Derivative assets	584
Financial liabilities
Short-term borrowings	6,000
Long-term debt, net	1,441,855	1,399,490
Derivative liabilities		743
Estimated fair value | Level 1
Financial assets
Money market funds		0
Available-for-sale investment securities	0	0
Stock in Federal Home Loan Bank	0	0
Loans receivable, net	13,260	0
Mortgage-servicing rights	0	0
Bank-owned life insurance	0	0
Derivative assets	0	0
Financial liabilities
Deposit liabilities	0	0
Short-term borrowings—other than bank	0
Other bank borrowings	0	0
Long-term debt, net	0	0
Derivative liabilities	2	129
Estimated fair value | Level 1 | Hawaiian Electric Company, Inc. and Subsidiaries
Financial assets
Derivative assets	0
Financial liabilities
Short-term borrowings	0
Long-term debt, net	0	0
Derivative liabilities		0
Estimated fair value | Level 2
Financial assets
Money market funds		13,085
Available-for-sale investment securities	1,304,683	1,089,755
Stock in Federal Home Loan Bank	9,706	11,218
Loans receivable, net	2,468	13,333
Mortgage-servicing rights	0	0
Bank-owned life insurance	147,391	143,197
Derivative assets	591	453
Financial liabilities
Deposit liabilities	5,748,858	5,546,644
Short-term borrowings—other than bank	24,498
Other bank borrowings	153,717	193,991
Long-term debt, net	1,747,972	1,704,717
Derivative liabilities	0	823
Estimated fair value | Level 2 | Hawaiian Electric Company, Inc. and Subsidiaries
Financial assets
Derivative assets	584
Financial liabilities
Short-term borrowings	6,000
Long-term debt, net	1,441,855	1,399,490
Derivative liabilities		743
Estimated fair value | Level 3
Financial assets
Money market funds		0
Available-for-sale investment securities	15,427	15,427
Stock in Federal Home Loan Bank	0	0
Loans receivable, net	4,791,209	4,839,493
Mortgage-servicing rights	12,091	13,216
Bank-owned life insurance	0	0
Derivative assets	0	0
Financial liabilities
Deposit liabilities	0	0
Short-term borrowings—other than bank	0
Other bank borrowings	0	0
Long-term debt, net	0	0
Derivative liabilities	0	0
Estimated fair value | Level 3 | Hawaiian Electric Company, Inc. and Subsidiaries
Financial assets
Derivative assets	0
Financial liabilities
Short-term borrowings	0
Long-term debt, net	$ 0	0
Derivative liabilities		$ 0

Fair value measurements - Asset

Fair value measurements - Assets and liabilities measured on a recurring basis (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Fair value measurements on a recurring basis
Available-for-sale investment securities	$ 1,320,110,000	$ 1,105,182,000
Estimated fair value
Fair value measurements on a recurring basis
Money market funds		13,085,000
Available-for-sale investment securities	1,320,110,000	1,105,182,000
Derivative assets
Derivative assets	591,000	453,000
Derivative liabilities
Derivative liabilities	2,000	952,000
Loans	4,806,937,000	4,852,826,000
Mortgage revenue bond
Fair value measurements on a recurring basis
Available-for-sale investment securities	15,427,000	15,427,000
Level 1 | Estimated fair value
Fair value measurements on a recurring basis
Money market funds		0
Available-for-sale investment securities	0	0
Derivative assets
Derivative assets	0	0
Derivative liabilities
Derivative liabilities	2,000	129,000
Loans	13,260,000	0
Level 2 | Estimated fair value
Fair value measurements on a recurring basis
Money market funds		13,085,000
Available-for-sale investment securities	1,304,683,000	1,089,755,000
Derivative assets
Derivative assets	591,000	453,000
Derivative liabilities
Derivative liabilities	0	823,000
Loans	2,468,000	13,333,000
Level 3 | Estimated fair value
Fair value measurements on a recurring basis
Money market funds		0
Available-for-sale investment securities	15,427,000	15,427,000
Derivative assets
Derivative assets	0	0
Derivative liabilities
Derivative liabilities	0	0
Loans	4,791,209,000	4,839,493,000
Fair value measurements on a recurring basis | Level 1
Derivative assets
Derivative assets	0	0
Derivative liabilities
Derivative liabilities	2,000	129,000
Fair value measurements on a recurring basis | Level 1 | Interest rate lock commitments
Derivative assets
Derivative assets	0	0
Derivative liabilities
Derivative liabilities	0	0
Fair value measurements on a recurring basis | Level 1 | Forward commitments
Derivative assets
Derivative assets	0	0
Derivative liabilities
Derivative liabilities	2,000	129,000
Fair value measurements on a recurring basis | Level 1 | Window forward contracts
Derivative assets
Derivative assets	0	0
Derivative liabilities
Derivative liabilities	0	0
Fair value measurements on a recurring basis | Level 1 | Other
Fair value measurements on a recurring basis
Money market funds	0	0
Fair value measurements on a recurring basis | Level 1 | Bank
Fair value measurements on a recurring basis
Available-for-sale investment securities	0	0
Fair value measurements on a recurring basis | Level 1 | Mortgage-related securities - FNMA, FHLMC and GNMA | Bank
Fair value measurements on a recurring basis
Available-for-sale investment securities	0	0
Fair value measurements on a recurring basis | Level 1 | U.S. Treasury federal agency obligations | Bank
Fair value measurements on a recurring basis
Available-for-sale investment securities	0	0
Fair value measurements on a recurring basis | Level 1 | Mortgage revenue bond | Bank
Fair value measurements on a recurring basis
Available-for-sale investment securities	0	0
Fair value measurements on a recurring basis | Level 2
Derivative assets
Derivative assets	591,000	453,000
Derivative liabilities
Derivative liabilities	0	823,000
Fair value measurements on a recurring basis | Level 2 | Interest rate lock commitments
Derivative assets
Derivative assets	7,000	445,000
Derivative liabilities
Derivative liabilities	0	24,000
Fair value measurements on a recurring basis | Level 2 | Forward commitments
Derivative assets
Derivative assets	0	8,000
Derivative liabilities
Derivative liabilities	0	56,000
Fair value measurements on a recurring basis | Level 2 | Window forward contracts
Derivative assets
Derivative assets	584,000	0
Derivative liabilities
Derivative liabilities	0	743,000
Fair value measurements on a recurring basis | Level 2 | Other
Fair value measurements on a recurring basis
Money market funds	0	13,085,000
Fair value measurements on a recurring basis | Level 2 | Bank
Fair value measurements on a recurring basis
Available-for-sale investment securities	1,304,683,000	1,089,755,000
Fair value measurements on a recurring basis | Level 2 | Mortgage-related securities - FNMA, FHLMC and GNMA | Bank
Fair value measurements on a recurring basis
Available-for-sale investment securities	1,122,565,000	897,474,000
Fair value measurements on a recurring basis | Level 2 | U.S. Treasury federal agency obligations | Bank
Fair value measurements on a recurring basis
Available-for-sale investment securities	182,118,000	192,281,000
Fair value measurements on a recurring basis | Level 2 | Mortgage revenue bond | Bank
Fair value measurements on a recurring basis
Available-for-sale investment securities	0	0
Fair value measurements on a recurring basis | Level 3
Derivative assets
Derivative assets	0	0
Derivative liabilities
Derivative liabilities	0	0
Fair value measurements on a recurring basis | Level 3 | Interest rate lock commitments
Derivative assets
Derivative assets	0	0
Derivative liabilities
Derivative liabilities	0	0
Fair value measurements on a recurring basis | Level 3 | Forward commitments
Derivative assets
Derivative assets	0	0
Derivative liabilities
Derivative liabilities	0	0
Fair value measurements on a recurring basis | Level 3 | Window forward contracts
Derivative assets
Derivative assets	0	0
Derivative liabilities
Derivative liabilities	0	0
Fair value measurements on a recurring basis | Level 3 | Other
Fair value measurements on a recurring basis
Money market funds	0	0
Fair value measurements on a recurring basis | Level 3 | Bank
Fair value measurements on a recurring basis
Available-for-sale investment securities	15,427,000	15,427,000
Fair value measurements on a recurring basis | Level 3 | Mortgage-related securities - FNMA, FHLMC and GNMA | Bank
Fair value measurements on a recurring basis
Available-for-sale investment securities	0	0
Fair value measurements on a recurring basis | Level 3 | U.S. Treasury federal agency obligations | Bank
Fair value measurements on a recurring basis
Available-for-sale investment securities	0	0
Fair value measurements on a recurring basis | Level 3 | Mortgage revenue bond | Bank
Fair value measurements on a recurring basis
Available-for-sale investment securities	15,427,000	15,427,000
Fair value measurements on a nonrecurring basis | Estimated fair value
Derivative liabilities
Loans	2,881,000	2,767,000
Real estate acquired in settlement of loans	93,000	1,189,000
Fair value measurements on a nonrecurring basis | American Savings Bank (ASB)
Derivative liabilities
Adjustments to fair value of loans held for sale	0		$ 0
Fair value measurements on a nonrecurring basis | Level 1
Derivative liabilities
Loans	0	0
Real estate acquired in settlement of loans	0	0
Fair value measurements on a nonrecurring basis | Level 2
Derivative liabilities
Loans	0	0
Real estate acquired in settlement of loans	0	0
Fair value measurements on a nonrecurring basis | Level 3
Derivative liabilities
Loans	2,881,000	2,767,000
Real estate acquired in settlement of loans	$ 93,000	$ 1,189,000

Fair value measurements - Addit

Fair value measurements - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Weighted average discount rate			2.826%
Mortgage revenue bond
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 15,427	$ 0	$ 15,427	$ 0	$ 0
Principal payments received	0	0	0	0
Purchases	0	0	0	0
Unrealized gain (loss) included in other comprehensive income	0	0	0	0
Ending balance	$ 15,427	$ 0	$ 15,427	$ 0	$ 15,427

Fair value measurements - Sum75

Fair value measurements - Summary of Level 3 financial instruments (Details) - Fair Value, Inputs, Level 3 - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair value measurements
Fair value	$ 2,881	$ 2,767
Fair value of property or collateral | Residential loan
Fair value measurements
Fair value	$ 731	$ 287
Appraised value, selling cost (as a percent)	7.00%	7.00%
Appraised value, weighted average rate (as a percent)	69.00%	61.00%
Fair value of property or collateral | Residential loan | Minimum
Fair value measurements
Appraised value (as a percent)		42.00%
Fair value of property or collateral | Residential loan | Maximum
Fair value measurements
Appraised value (as a percent)		65.00%
Fair value of property or collateral | Commercial loans
Fair value measurements
Appraised value, weighted average rate (as a percent)	76.00%
Fair value of property or collateral | Home equity line of credit
Fair value measurements
Fair value		$ 12
Appraised value, selling cost (as a percent)		7.00%
Fair value of property or collateral | Real estate acquired in settlement of loans
Fair value measurements
Fair value	$ 93	$ 1,189
Appraised value, selling cost (as a percent)	7.00%	7.00%
Appraised value (as a percent)		100.00%
Appraised value, weighted average rate (as a percent)		100.00%
Sales price | Residential loan
Fair value measurements
Fair value		$ 2,468
Appraised value, weighted average rate (as a percent)		97.00%
Sales price | Residential loan | Minimum
Fair value measurements
Appraised value (as a percent)	50.00%	95.00%
Sales price | Residential loan | Maximum
Fair value measurements
Appraised value (as a percent)	91.00%	100.00%
Sales price | Commercial loans
Fair value measurements
Fair value	$ 2,150
Sales price | Commercial loans | Minimum
Fair value measurements
Appraised value (as a percent)	72.00%
Sales price | Commercial loans | Maximum
Fair value measurements
Appraised value (as a percent)	76.00%

Termination of proposed merge76

Termination of proposed merger and other matters (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended			6 Months Ended	12 Months Ended
	Jul. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017	Dec. 31, 2016
Hawaiian Electric Company, Inc. and Subsidiaries
Business Acquisition [Line Items]
Merger termination, expenses recognized			$ 1	$ 1
NextEra Energy, Inc Merger
Business Acquisition [Line Items]
Merger contract termination fee	$ 90
Maximum expenses paid to party for cancellation of merger	$ 5
Net income recognized on merger termination		$ 64				$ 60
Gain (loss) recognized due to merger and spin-off related expenses, net of tax			$ (2)	$ (2)
Net income recognized, merger termination fee						55
Net income recognized, merger termination, reimbursements and insurance						3
Recognition of previously disallowed merger expenses					$ 8
Net income recognized, merger and spin-off related expenses						$ 6