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Cash flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Supplemental disclosures of cash flow information |  |  |  |  |
Interest paid to non-affiliates | $ 84,000 | $ 85,000 |  | $ 84,000 |
Income taxes paid | 47,000 | 18,000 |  | 17,000 |
Income taxes refunded | 24,000 | 4,000 |  | 31,000 |
Supplemental disclosures of noncash activities |  |  |  |  |
Common stock dividends reinvested in HEI common stock | 0 | 24,000 |  | 24,000 |
Loans transferred from held for investment to held for sale | 0 | 25,000 |  | 0 |
Real estate acquired in settlement of loans | 3,000 | 4,000 |  | 11,000 |
Obligations to fund low income housing investments, net | 14,000 | 1,000 |  | 0 |
Electric utility property, plant and equipment |  |  |  |  |
AFUDC-equity | 6,771 | 5,561 | [1] | 7,007 | [1]
Unpaid invoices and other | 43,000 | (12,000) |  | (8,000) |
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |  |  |
Supplemental disclosures of cash flow information |  |  |  |  |
Interest paid to non-affiliates | 61,000 | 59,000 |  | 57,000 |
Income taxes paid | 6,000 | 6,000 |  | 6,000 |
Income taxes refunded | 8,000 | 32,000 |  | 9,000 |
Electric utility property, plant and equipment |  |  |  |  |
AFUDC-equity | 6,771 | 5,561 | [1] | 7,007 | [1]
Estimated fair value of noncash contributions in aid of construction | 3,000 | 5,000 |  | 10,000 |
Unpaid invoices and other | $ 40,000 | $ (12,000) |  | $ (8,000) |
[1] | As restated - See Note 1, “Summary of significant accounting policies - Revision and restatements of previously issued financial statements.”

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- Definition The amount of real estate that the entity acquired in settlement of loans in noncash (or part noncash) transactions. Noncash is defined as an information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments during the period. + References No definition available. + Details
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition Value of stock issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the holder of the stock to reinvest dividends paid to them by the entity on new issues of stock by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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