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SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT- Statements of Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash flows from operating activities |  |  |  |  |  |
Increase (decrease) in deferred income taxes |  | $ 103,916 | $ 80,399 | [1] | $ 90,848 | [1]
Net cash provided by operating activities |  | 325,420 | 361,568 | [1] | 278,934 | [1]
Cash flows from investing activities |  |  |  |  |  |
Capital expenditures |  | (364,826) | (389,438) | [1] | (370,715) | [1]
Net cash used in investing activities |  | (592,449) | (598,182) | [1] | (471,439) | [1]
Cash flows from financing activities |  |  |  |  |  |
Net increase in short-term borrowings with original maturities of three months or less |  | 13,490 | 21,789 | [1] | 14,872 | [1]
Proceeds from issuance of long-term debt |  | 125,000 | 286,000 | [1] | 457,000 | [1]
Repayment of long-term debt |  | (111,400) | (216,000) | [1] | (375,500) | [1]
Excess tax benefits from share-based payment arrangements |  | 277 | 430 | [1] | 61 | [1]
Net proceeds from issuance of common stock |  | 26,898 | 55,086 | [1] | 23,613 | [1]
Common stock dividends |  | (126,458) | (98,383) | [1] | (96,202) | [1]
Net cash provided by (used in) financing activities |  | 222,535 | 236,988 | [1] | 141,902 | [1]
Net increase (decrease) in cash and cash equivalents |  | (44,494) | 374 | [1] | (50,603) | [1]
Cash and cash equivalents, January 1 | [1] | 220,036 | 219,662 |  | 270,265 |
Cash and cash equivalents, December 31 |  | 175,542 | 220,036 | [1] | 219,662 | [1]
Issuance of common stock: Dividend reinvestment and stock purchase plan |  | 2,461 | 41,692 |  | 41,295 |
As previously filed |  |  |  |  |  |
Cash flows from operating activities |  |  |  |  |  |
Increase (decrease) in deferred income taxes |  | 59,184 |  |  |  |
Net cash provided by operating activities |  | 301,479 | 327,146 |  | 234,542 |
Cash flows from investing activities |  |  |  |  |  |
Capital expenditures |  | (339,721) | (353,879) |  | (325,480) |
Net cash used in investing activities |  | (568,508) | (563,760) |  | (427,047) |
Difference |  |  |  |  |  |
Cash flows from operating activities |  |  |  |  |  |
Increase (decrease) in deferred income taxes |  | 44,732 |  |  |  |
Net cash provided by operating activities |  | 23,941 | 34,422 |  | 44,392 |
Cash flows from investing activities |  |  |  |  |  |
Capital expenditures |  | (25,105) | (35,559) |  | (45,235) |
Net cash used in investing activities |  | (23,941) | (34,422) |  | (44,392) |
Common stock |  |  |  |  |  |
Cash flows from financing activities |  |  |  |  |  |
Issuance of common stock: Dividend reinvestment and stock purchase plan |  | 2,461 | 41,692 |  | 41,295 |
Hawaiian Electric Industries, Inc. |  |  |  |  |  |
Cash flows from operating activities |  |  |  |  |  |
Increase (decrease) in deferred income taxes |  | (3,269) | 1,086 |  |  |
Changes in prepaid and accrued income taxes |  | 3,223 | (1,462) |  |  |
Net cash provided by operating activities |  | 100,794 | 82,274 |  | 127,118 |
Cash flows from investing activities |  |  |  |  |  |
Capital expenditures |  | (74) | (201) |  | (410) |
Investments in subsidiaries |  | (40,000) | (78,500) |  | (44,000) |
Net cash used in investing activities |  | (40,074) | (78,701) |  | (44,410) |
Cash flows from financing activities |  |  |  |  |  |
Net increase (decrease) in notes payable to subsidiaries with original maturities of three months or less |  | (222) | 56 |  | (1,797) |
Net increase in short-term borrowings with original maturities of three months or less |  | 13,490 | 21,788 |  | 14,873 |
Proceeds from issuance of long-term debt |  | 125,000 | 50,000 |  | 0 |
Repayment of long-term debt |  | (100,000) | (50,000) |  | (7,000) |
Excess tax benefits from share-based payment arrangements |  | 277 | 430 |  | 61 |
Net proceeds from issuance of common stock |  | 26,898 | 55,086 |  | 23,613 |
Common stock dividends |  | (126,458) | (98,383) |  | (96,202) |
Net cash provided by (used in) financing activities |  | (61,015) | (21,023) |  | (66,452) |
Net increase (decrease) in cash and cash equivalents |  | (295) | (17,450) |  | 16,256 |
Cash and cash equivalents, January 1 |  | 571 | 18,021 |  | 1,765 |
Cash and cash equivalents, December 31 |  | 276 | 571 |  | 18,021 |
Hawaiian Electric Industries, Inc. | As previously filed |  |  |  |  |  |
Cash flows from operating activities |  |  |  |  |  |
Increase (decrease) in deferred income taxes |  | (15,913) | 15,228 |  |  |
Changes in prepaid and accrued income taxes |  | 15,867 | (15,604) |  |  |
Hawaiian Electric Industries, Inc. | Difference |  |  |  |  |  |
Cash flows from operating activities |  |  |  |  |  |
Increase (decrease) in deferred income taxes |  | 12,644 | (14,142) |  |  |
Changes in prepaid and accrued income taxes |  | (12,644) | 14,142 |  |  |
Hawaiian Electric Industries, Inc. | Common stock |  |  |  |  |  |
Cash flows from financing activities |  |  |  |  |  |
Issuance of common stock: Dividend reinvestment and stock purchase plan |  | 0 | 24,000 |  | 24,000 |
Hawaiian Electric Industries, Inc. | ASB Hawaii, Inc. | Consolidated subsidiary |  |  |  |  |  |
Cash flows from financing activities |  |  |  |  |  |
Accounts receivable reduction |  | 2,400 | 2,300 |  | 1,800 |
HEI notes payable increase to ASHI |  | $ 2,500 | $ 2,500 |  | $ 2,500 |
[1] | As restated - See Note 1, “Summary of significant accounting policies - Revision and restatements of previously issued financial statements.”

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