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Fair value measurements (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Financial assets |  |
Available-for-sale investment securities, at fair value | $ 785,837 | $ 550,394
Financial liabilities |  |
Short-term borrowings—other than bank | 171,992 | 118,972
Other bank borrowings | 368,593 | 290,656
Carrying or notional amount |  |
Financial assets |  |
Money market funds | 10 | 10
Available-for-sale investment securities, at fair value | 785,837 | 550,394
Stock in Federal Home Loan Bank | 10,678 | 69,302
Loans receivable, net | 4,492,728 | 4,397,457
Derivative assets | 586 | 398
Financial liabilities |  |
Deposit liabilities | 4,825,954 | 4,623,415
Short-term borrowings—other than bank | 171,992 | 118,972
Other bank borrowings | 368,593 | 290,656
Long-term debt, net—other than bank | 1,506,546 | 1,506,546
Derivative liabilities | 125 | 114
Carrying or notional amount | American Savings Bank (ASB) |  |
Financial liabilities |  |
Notional amount of loans serviced | 1,600,000 | 1,400,000
Estimated fair value |  |
Financial assets |  |
Money market funds | 10 | 10
Available-for-sale investment securities, at fair value | 785,837 | 550,394
Stock in Federal Home Loan Bank | 10,678 | 69,302
Loans receivable, net | 4,700,042 | 4,578,822
Derivative assets | 586 | 398
Financial liabilities |  |
Deposit liabilities | 4,828,402 | 4,623,773
Short-term borrowings—other than bank | 171,992 | 118,972
Other bank borrowings | 375,428 | 298,837
Long-term debt, net—other than bank | 1,595,161 | 1,622,736
Derivative liabilities | 125 | 114
Estimated fair value | Level 1 |  |
Financial assets |  |
Derivative assets | 0 | 0
Financial liabilities |  |
Derivative liabilities | 112 | 71
Estimated fair value | Level 2 |  |
Financial assets |  |
Money market funds | 10 | 10
Available-for-sale investment securities, at fair value | 785,837 | 550,394
Stock in Federal Home Loan Bank | 10,678 | 69,302
Derivative assets | 586 | 398
Financial liabilities |  |
Deposit liabilities | 4,828,402 | 4,623,773
Short-term borrowings—other than bank | 171,992 | 118,972
Other bank borrowings | 375,428 | 298,837
Long-term debt, net—other than bank | 1,595,161 | 1,622,736
Derivative liabilities | 13 | 43
Estimated fair value | Level 3 |  |
Financial assets |  |
Loans receivable, net | 4,700,042 | 4,578,822
Estimated fair value | American Savings Bank (ASB) |  |
Financial liabilities |  |
Servicing rights on loans | 16,000 | 14,500
Hawaiian Electric Company | Carrying or notional amount |  |
Financial liabilities |  |
The Utilities’ short-term borrowings (included in amount above) | 94,995 |
Long-term debt, net—other than bank | 1,206,546 | 1,206,546
Hawaiian Electric Company | Estimated fair value |  |
Financial liabilities |  |
The Utilities’ short-term borrowings (included in amount above) | 94,995 |
Long-term debt, net—other than bank | 1,288,112 | 1,313,893
Hawaiian Electric Company | Estimated fair value | Level 2 |  |
Financial liabilities |  |
The Utilities’ short-term borrowings (included in amount above) | 94,995 |
Long-term debt, net—other than bank | $ 1,288,112 | $ 1,313,893

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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- Definition Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=29638263&loc=d3e39828-111592 + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Glossary Loan -URI http://asc.fasb.org/extlink&oid=6517073 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746 + Details
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